B450M Steel Legend
This model may not be sold worldwide. Please contact your local dealer for the availability of this model in your region.
Tough as Steel. True Legend
Polychrome SYNC – Irresistible Aesthetics
Stainless Steel Design
Steel Legend represents the philosophical state of rock-solid durability and irresistible aesthetics. Built around most demanding specs and features, the Steel Legend series aims at daily users and mainstream enthusiasts! Providing a strong array of materials/components to ensure a stable and reliable performance. A motherboard that fulfills every task – with style!
RULE YOUR OWN LIGHTING WAY. POLYCHROME RGB
ASRock motherboards deliver stunning performance and superior aesthetics to rule your own colorful lighting way! ASRock offers a very comprehensive control to perform the built-in RGB LEDs or the connected LED strips, CPU fans, coolers, chassis and any RGB devices smoothly. Devices can be synchronized across the Polychrome RGB Sync-certified accessories as well.
The addressable RGB LED header supports WS2812B addressable RGB LED strip (5V/Data/GND), with a maximum power rating of 3A (5V), a max of 80 LEDs and length within 2 meters.The RGB LED header supports standard 5050 RGB LED strip (12V/G/R/B), with a maximum power rating of 3A (12V) and length within 2 meters.
Dual M.2 For SSD
Two of the world’s fastest M.2 slots. One delivers up to PCIe Gen3 x4 32Gb/s transfer speed, the other one supports SATA3 6Gb/s mode.
Dual USB 3.2 Gen2 (Type-A Type-C)
This motherboard has a pair of onboard Type-A and Type-C USB 3.2 Gen2 ports built on the rear i/o for supporting next generation USB 3.2 Gen2 devices and to deliver up to 10 Gbps data transfer rates.
USB 3.2 Gen2 doubles the data transfer rate
USB 3.2 Gen2 Type-C doubles the charge speed!
Charge speed may vary due to controller protocol, please make sure your device can support 3.0A charging.
It comes with 2 ounces copper inner layers, using only carefully selected copper materials for PCB layers, delivering lower temperature and higher energy efficiency for overclocking.
PREMIUM 60A POWER CHOKE
ASRock’s premium 60A power chokes effectively make the saturation current up to three times better, thus providing enhanced and improved Vcore voltage to the motherboard.
PCI-E STEEL SLOT
The advanced PCI-E Steel Slot packed with solid cover that prevent any signal interference with graphics cards. It also ensures the heavy graphics cards to be well-installed in the PCI-E slot safely.
AMD StoreMI Technology
A powerful tool that combines the speed of your SSD with the capacity of your hard disk into a single, fast, easy-to-manage drive, AMD StoreMI technology “combines” these two types of storage into a single drive and automatically moves the data you access the most to the SSD, so you get the best of both worlds.
XXL Aluminum Alloy Heatsink
Extra large aluminum alloy heat sinks that effectively take away heat from the MOSFET and chipset so that your whole system may perform more stable.
Premium 60A Power Choke
Compared to traditional chokes, ASRock’s premium 60A power chokes effectively make the saturation current up to three times better, thus providing enhanced and improved Vcore voltage to the motherboard.
Nichicon 12K Black Caps
Supreme 12K black capacitors with lifespans of at least 12,000 hours. Compared to other counterparts on high-end motherboards that merely have lifespans of around 10,000 hours, ASRock applied Nichicon 12K Black Caps that offer 20% longer lifespans and provide more stability and reliability.
A new designed protective cover for all of the crucial parts near the motherboard’s rear I/O, so that they won’t easily be damaged by static electricity.
Sapphire Black PCB
Pure black PCB appearance. The new Sapphire Black PCB represents rock-solid quality and gives the motherboard a more mysterious touch.
High Density Glass Fabric PCB
High Density Glass Fabric PCB design that reduces the gaps between the PCB layers to protect the motherboard against electrical shorts caused by humidity.
2oz Copper PCB
Using only carefully selected copper materials for PCB layers, 2oz Copper PCB delivers lower temperature and higher energy efficiency for overclocking.
Full Spike Protection
Some sensitive digital components on the motherboard are vulnerable to power surges, the excessive current may cause your system to malfunction immediately. ASRock Full Spike Protection includes various technologies to prevent your motherboard’s components from being damaged by these unexpected voltage spikes.
Live Update APP Shop
ASRock Live Update APP Shop is designed for your convenience. We provide various apps and support software for users to download. You can also easily optimize your system and keep your motherboard up to date with ASRock Live Update APP Shop.
ASRock USB 3.2 Gen2- ASRock USB 3.2 Gen2 Type-A Port (10 Gb/s)- ASRock USB 3.2 Gen2 Type-C Port (10 Gb/s)ASRock Super Alloy- XXL Aluminum Alloy Heatsink- Premium 60A Power Choke- Nichicon 12K Black Caps (100% Japan made high quality conductive polymer capacitors)- I/O Armor- Sapphire Black PCB- High Density Glass Fabric PCB- 2oz Copper PCBASRock Steel SlotASRock Ultra M.2 (PCIe Gen3 x4)ASRock Full Spike Protection (for all USB, Audio, LAN Ports)ASRock Live Update APP Shop
For Ryzen Series APUs (Picasso, Cezanne, Renoir and Raven Ridge), ECC is only supported with PRO CPUs.Please refer to below table for AMD non-XMP memory frequency support.
Ryzen Series CPUs (Vermeer):
Ryzen Series CPUs (Matisse):
Ryzen Series APUs (Cezanne):
Ryzen Series APUs (Renoir):
Ryzen Series CPUs (Pinnacle Ridge):
Ryzen Series CPUs (Picasso):
Ryzen Series CPUs (Summit Ridge):
Ryzen Series CPUs (Raven Ridge):
SR: Single rank DIMM, 1Rx4 or 1Rx8 on DIMM module labelDR: Dual rank DIMM, 2Rx4 or 2Rx8 on DIMM module label
Due to the operating system limitation, the actual memory size may be less than 4GB for the reservation for system usage under Windows ® 32-bit OS. For Windows ® 64-bit OS with 64-bit CPU, there is no such limitation.
Actual support may vary by CPU
The Max shared memory 16GB requires 32GB system memory installed.
AMD Ryzen series CPUs (Vermeer, Matisse, Cezanne, Renoir, Summit Ridge and Pinnacle Ridge)- 1 x PCI Express 3.0 x16 Slot (PCIE2: x16 mode) 1 x PCI Express 2.0 x16 Slot (PCIE3: x4 mode)AMD Ryzen series CPUs (Picasso, Raven Ridge)- 1 x PCI Express 3.0 x16 Slot (PCIE2: x8 mode) (If you use Athlon 2xxGE series APU, PCIE2 slot will run at x4 mode.)- 1 x PCI Express 2.0 x16 Slot (PCIE3: x4 mode)AMD Athlon series CPUs- 1 x PCI Express 3.0 x16 Slot (PCIE2: x4 mode) 1 x PCI Express 2.0 x16 Slot (PCIE3: x4 mode)
M2_2 and SATA3_3 share lanes. If either one of them is in use, the other one will be disabled.
Supports NVMe SSD as boot disksSupports ASRock U.2 Kit
Supports in total up to 12V/3A, 36W LED Strip
Supports in total up to 5V/3A, 15W LED Strip
The AMD Fan LED Header supports LED strips of maximum load of 3A (36W) and length up to 2.5M.
The CPU Fan Connector supports the CPU fan of maximum 1A (12W) fan power.
The CPU/Water Pump Fan supports the water cooler fan of maximum 2A (24W) fan power.
The Chassis/Water Pump Fan supports the water cooler fan of maximum 2A (24W) fan power.CPU_FAN2/WP, CHA_FAN1/WP, CHA_FAN2/WP and CHA_FAN3/WP can auto detect if 3-pin or 4-pin fan is in use.
Software- ASRock Motherboard Utility (A-Tuning)- ASRock Polychrome SYNC- ASRock XFast LANUEFI- ASRock Full HD UEFI- ASRock Instant Flash- ASRock Easy RAID Installer
v battery charger module
For easy prototyping and interfacing choose Espressif’sdevelopment boards! The all-in-one DevKits below areall you need to develop your own IoT applications.
32-bit MCU 2.4 GHz Wi-Fi
ESP32-S2-DevKitM-1 is an entry-level development board based on ESP32-S2-MINI series. It has all the ESP32-S2 pins exposed and is easy to connect and use.
ESP32-S2 general-purpose development board, based on ESP32-S2-SOLO series. It has all the ESP32-S3 pins exposed and is easy to connect and use.
The new multimedia development board ESP32-S2-Kaluga-1 based on ESP32-S2 has various functions, such as an LCD screen display, touch panel control, camera image acquisition, audio playback, etc. It can be flexibly assembled and disassembled, thus fulfilling a variety of customized requirements.
ESP32-S2 general-purpose development board, based on ESP32-S2-WROVER, ESP32-S2-WROVER-I, ESP32-S2-WROOM or ESP32-S2-WROOM-I, with 4 MB flash and pin header.
32-bit MCU 2.4 GHz Wi-Fi Bluetooth 5 (LE)
ESP32-S3 general-purpose development board, based on ESP32-S3-WROOM-1/1U or ESP32-S3-WROOM-2/2U. It has all the ESP32-S3 pins exposed and is easy to connect and use.
ESP32-S3 general-purpose development board, based on ESP32-S3-MINI-1 or ESP32-S3-MINI-1U. It has all the ESP32-S3 pins exposed and is easy to connect and use.
The BOX series development boards, ESP32-S3-BOX and ESP32-S3-BOX-Lite, are AIoT development boards that based on Espressif’s ESP32-S3 Wi-Fi Bluetooth 5 (LE) SoC. They provide a platform for developing the control of home appliances using Voice Assistance touch and screen controller, sensor, infrared controller, and intelligent Wi-Fi gateway. Development boards come with pre-built firmware that supports offline voice interaction, with the SDKs and examples provided by Espressif, you will be able to develop a wide variety of AIoT applications based on the BOX series products such as online and offline voice assistants, voice-enabled devices, human-computer interaction devices, control panels, multi-protocol gateways easily.
ESP32-S3-EYE is a small-sized AI development board. It is based on the ESP32-S3 SoC and ESP-WHO, Espressif’s AI development framework. It features a 2-Megapixel camera, an LCD display, and a microphone, which are used for image recognition and audio processing. ESP32-S3-EYE offers plenty of storage, with an 8 MB Octal PSRAM and a 8 MB flash. It also supports image transmission via Wi-Fi and debugging through a Micro-USB port.
ESP32-S3-USB-OTG is targeting at applications based on USB interface. It is equipped with the ESP32-S3-MINI-1-N8 module. Combined with the Wi-Fi functionality provided by the SoC, the USB interface can be used for video streaming over Wi-Fi, accessing the Internet through a 4G hotspot, connecting to a wireless USB disk, and many other applications.
USB Device, USB Host, SD Card
The ESP32-S3-Korvo-1 is an AI development board. It is based on the ESP32-S3 SoC and ESP-Skainet, Espressif’s speech recognition SDK. It features a three-microphone array which is suitable for far-field voice pick-up with low-power consumption. The ESP32-S3-Korvo-1 supports voice wake-up and offline speech command recognition in Chinese and English languages. With ESP-Skainet, you can develop a variety of speech recognition applications, such as Smart displays, Smart plugs, Smart switches, etc.
ESP32-S3-Korvo-2 is an ESP32-S3 based multimedia development board. It is equipped with a two-microphone array which is suitable for voice recognition and near/far-field voice wake-up applications. The board integrates multiple peripherals such as LCD, camera, and TF. It also supports JPEG video stream processing. With all of its outstanding features, the board is an ideal choice for the development of low-cost and low-power audio and video products.
ESP32-S3-LCD-Ev-Board and ESP32-S3-LCD-Ev-Board-2 are two ESP32-S3-based development boards for RGB interface LCD, both of which utilize the module with 16MB Flash and 8-line 8MB PSRAM memory.They are equipped with a 3.95” 480 x 480 resolution and a 4.3” 800 x 480 resolution capacitive touch screen respectively. They also house dual array microphones for offline voice wake-up and recognition, and features touch screen and voice interaction. The boards are suitable for prototype construction of products such as Smart central control screens, 86-type switch panels, home appliance control panels, electric vehicle dashboards, visual doorbells.
32-bit RISC-V MCU 2.4 GHz Wi-Fi Bluetooth LE 5 (LE)
The ESP8684-DevKitM-1 is an entry-level development board based on ESP8684-MINI-1 or ESP8684-MINI-1U. This board integrates complete Wi-Fi and Bluetooth LE functions. Most of the I/O pins on the module are broken out to the pin headers on both sides of this board for easy interfacing. Developers can either connect peripherals with jumper wires or mount ESP8684-DevKitM-1 on a breadboard.
32-bit RISC-V MCU 2.4 GHz Wi-Fi Bluetooth LE 5 (LE)
ESP32-C3-DevKitM-1 is an entry-level development board equipped with ESP32-C3-MINI-1 or ESP32-C3-MINI-1U. Most of the I/O pins are broken out to the pin headers on both sides for easy interfacing. Developers can either connect peripherals with jumper wires or mount ESP32-C3-DevKitM-1 on a breadboard.
ESP32-C3-DevKitC-02 is an entry-level development board equipped with ESP32-C3-WROOM-02 or ESP32-C3-WROOM-02U. Most of the I/O pins are broken out to the pin headers on both sides for easy interfacing. Developers can either connect peripherals with jumper wires or mount ESP32-C3-DevKitC-1 on a breadboard.
ESP32-C3-DevKit-RUST-1 is based on the ESP32-C3, a single-core Wi-Fi and Bluetooth 5 (LE) microcontroller SoC, based on the open-source RISC-V architecture. This special board also includes the ESP32-C3-MINI-1 module, a 6DoF IMU, a temperature and humidity sensor, a Li-Ion battery charger, and a Type-C USB. The board is designed to be easily used in training sessions, demonstrating Rust capabilities with all the board peripherals.
ESP32-C3-AWS-ExpressLink-DevKit is a development board based on the ESP32-C3-MINI-1-N4-A module. Its pin layout is compatible with that of the Arduino Zero development board, and therefore ESP32-C3-AWS-ExpressLink-DevKit can be directly plugged in Arduino Zero, or connected with other host boards and peripherals via jumpers.
ESP32-C3-LCDkit is a development board used for evaluating rotary knob applications. The board consists of a mainboard and a subboard. The mainboard integrates the ESP32-C3-MINI-1 module, a speaker, an EC11 rotary encoder, an infrared sensor, and more. The subboard features a 1.28-inch SPI interface screen with a resolution of 240 x 240. The ESP32-C3 offers cost advantages and industry-leading low power consumption, making it an ideal choice for building SPI interface screen solutions such as knob screens and small-sized display found in home appliances like washing machines, body fat scales, electric toothbrushes, and more.
ESP32-C3-Lyra is an ESP32-C3-based audio development board produced by Espressif for controlling light with audio. The board has control over the microphone, speaker, and LED strip, perfectly matching customers’ product development needs for ultra-low-cost and high-performance audio broadcasters and rhythm light strips.
32-bit RISC-V MCU 2.4 GHz Wi-Fi 6 Bluetooth 5 (LE) IEEE 802.15.4
ESP32-C6 general-purpose development board, based on ESP32-C6-WROOM-1 or ESP32-C6-WROOM-1U. It has all the ESP32-C6 pins exposed and is easy to connect and use. Most of the I/O pins are broken out to the pin headers on both sides for easy interfacing. Developers can either connect peripherals with jumper wires or mount ESP32-C6-DevKitC-1 on a breadboard.
ESP32-C6 general-purpose development board, based on ESP32-C6-MINI-1 or ESP32-C6-MINI-1U. It has all the ESP32-C6 pins exposed and is easy to connect and use. Most of the I/O pins are broken out to the pin headers on both sides for easy interfacing. Developers can either connect peripherals with jumper wires or mount ESP32-C6-DevKitM-1 on a breadboard.
32-bit RISC-V MCU Bluetooth 5 (LE) IEEE 802.15.4
ESP32-H2-DevKitM-1 is an entry-level development board based on Bluetooth® Low Energy and IEEE 802.15.4 combo modules ESP32-H2-MINI-1 or ESP32-H2-MINI-1U. Most of the I/O pins on the ESP32-H2-MINI-1 module are broken out to the pin headers on both sides of this board for easy interfacing. Developers can either connect peripherals with jumper wires or mount ESP32-H2-DevKitM-1 on a breadboard.
ESP Thread Border Router/Zigbee Gateway board integrates the ESP32-S3 SoC and the ESP32-H2 RCP, enabling the development of Thread Border Router and Zigbee Gateway products. Espressif’s Thread Border Router solution complies with Thread 1.3 and supports the Matter application. It offers various features including Bi-directional IPv6 connectivity, Service Discovery Delegate, Service Registration Server, Multicast Forwarding, NAT64, and a user-friendly Web GUI for easy configuration. Additionally, the board supports the addition of daughter boards to expand its functionality such as: Ethernet interface (available for separate purchase), HMI and Voice Control.
32-bit MCU 2.4 GHz Wi-Fi BT/Bluetooth LE
- PC connectivity: USB
- Power supply options: USB (by default), or 5V/GND header pins, or 3V3/GND header pins
- SDK: ESP-IDF source code and example applications
ESP32-DevKitC is an entry-level development board. It has all the ESP32 pins exposed and is easy to connect and use.
ESP32-DevKitM-1 is a ESP32-MINI-1-based development board produced by Espressif. Most of the I/O pins are broken out to the pin headers on both sides for easy interfacing. Developers can either connect peripherals with jumper wires or mount ESP32-DevKitM-1 on a breadboard.
The ESP-WROVER-KIT comes with an ESP32-WROVER-E module by default. This board features support for an LCD and MicroSD card. The I/O pins have been broken out from the ESP32-WROVER-E for easy extension. The board carries an advanced multi-protocol USB bridge (the FTDI FT2232HL), enabling developers to use JTAG directly to debug the ESP32 module through the USB interface. The development board makes secondary development easy and cost-effective.
ESP32-PICO-KIT is Espressif’s smallest development board, as it fits into a mini breadboard. It is fully functional with the minimum number of discrete components, while it has all the ESP32 pins exposed.
ESP32-PICO-V3-ZERO-DevKit is a development board based on ESP32-PICO-V3-ZERO (ACK) module. Its pin layout is compatible with that of Arduino Zero development board, therefore, this ESP32-PICO-V3-ZERO-DevKit can directly plug in Arduino Zero board, or connect with other host boards and peripherals via jumper.
ESP32-PICO-DevKitM-2 is a ESP32-PICO-MINI-02-based development board produced by Espressif. Most of the I/O pins are broken out to the pin headers on both sides for easy interfacing. Developers can either connect peripherals with jumper wires or mount ESP32-DevKitM-1 on a breadboard.
ESP-EYE is a development board for image recognition and audio processing, which can be used in various AIoT applications. It features an ESP32 chip, a 2-Megapixel camera and a microphone. ESP-EYE offers plenty of storage, with an 8 MB PSRAM and a 4 MB flash. It also supports image transmission via Wi-Fi and debugging through a Micro-USB port.
The ESP32-LyraT development board is designed for the speech and voice recognition market. It integrates the ESP32-WROVER-E module, which includes a dual-core processor and 4.5 MB of operating memory. With this development board, only few peripheral devices are required for implementing a highly-integrated audio solution.
ESP32-LyraT-Mini is a lightweight audio development board based on ESP32-WROVER-E, which implements AEC, AGC, NS WWE (wake word engine) and other audio signal processing technologies.
ESP32-LyraTD-MSC, one of Espressif’s Audio Development Boards, is an Acoustic Echo Cancelation (AEC) solution supporting voice recognition, near-field and far-field voice wake-up. Audio files in the format of AAC, FLAC, OPUS and OGG can be decoded and output without quality loss. It also supports connection to Baidu’s DuerOS and Amazon’s Alexa Voice Service (AVS).
ESP32-LyraTD-SYNA is one of Espressif’s Audio Development Board based on ESP32 MCU and Synaptics DSP. It is an Acoustic Echo Cancelation (AEC) solution, supporting voice recognition and voice wake-up. It also supports connection to Amazon’s AVS (Alexa Voice Service), Google’s Dialogﬂow and Google’s GVA (Google Voice Assistant).
ESP32-LyraTD-DSPG is based on ESP32-WROVER-B, a BT/Wi-Fi combo module, and a digital signal processor (DSP) that features a three-microphone array for noise reduction, Echo cancellation, beamforming and wake-word detection. ESP32-LyraTD-DSPG is integrated with peripheral devices and consists of two development boards. The sub board mainly consists of the microphone array, function keys and LEDs. The main board is integrated with power management, Wi-Fi and audio modules like dsp, codec and power amplifier. The two boards can be connected with FPC.
ESP32-Vaquita-DSPG is Espressif’s new Alexa built-in solution powered by ESP32 and DSP Group’s DBMD5P audio SoC. With a 2-Mic array which allows for a 360-degree pick-up, the solution provides a superior far-field voice recognition performance. The new ESP32-Vaquita-DSPG development kit is a turnkey solution for easily creating Alexa built-in connected devices that provide out-of-the-box voice enablement and AWS-IoT Cloud connectivity.
ESP32-Korvo is an ESP32-based audio development board with microphone array, together with Espressif’s speech recognition SDK ESP-Skainet, ESP32-Korvo is suitable for far-field speech recognition applications with low power consumption. ESP32-Korvo is composed of two boards connected by an FPC cable: the main board contains ESP32-WROVER-E module, power port, micro SD card slot, earphone and speaker connectors; the sub board contains microphone array, function buttons and LEDs.
ESP32-Korvo-DU1906 is an Espressif audio development board with an ESP32-DU1906 module as its core. This board is designed not only to provide advanced end-to-end audio solutions with highly efficient integrated AI capabilities as well as a Cloud End integrated device-level AIoT platform, significantly lowering the barrier to entry for IoT devices to AI capability.
ESP32-LCD-Kit is an HMI (Human Machine Interface) development board based on ESP32-DevKitC (need to purchase if you didn’t have one). ESP32-LCDKit is integrated with such peripherals as SD-Card, DAC-Audio, and can be connected an external display. The board is mainly used for HMI-related development and evaluation. Development board reserved screen interface type: SPI serial interface, 8-bit parallel interface, 16-bit parallel interface.
ESP32-Ethernet-Kit is an ESP32-based development board produced by Espressif. It consists of two development boards, the Ethernet board A and the PoE board B, The Ethernet board contains Bluetooth / Wi-Fi dual-mode ESP32-WROVER-E module and IP101GRI, a Single Port 10/100 Fast Ethernet Transceiver (PHY). The PoE board (B) provides power over Ethernet functionality. The A board can work independently, without the board B installed.
32-bit MCU 2.4 GHz Wi-Fi
ESP8266-DevKitC is an Espressif compact development board based on ESP8266 modules. All of the I/O pins of the module are broken out to the female header connectors on both sides of the board for easy interfacing. Developers can connect these pins to peripherals as needed.
ESP-Launcher is a Micro USB-powered development board that allows access to all 32 pins of ESP8266. It integrates the commonly-used peripherals.
Other IoT DevKits
32-bit MCU 2.4 GHz Wi-Fi BT/Bluetooth LE Sensor
The ESP32 touch sensor development kit, ESP32-Sense Kit, is used for evaluating and developing ESP32 touch sensor system. ESP32-Sense Kit consists of one motherboard and multiple daughterboards. The motherboard contains a display unit, a main control unit and a debug unit. The daughterboards have touch electrodes in different combinations or shapes, such as linear slider, wheel slider, matrix buttons and spring buttons, depending on the application scenarios.
ESP32-MeshKit-Sense is a development board with an ESP32 module at its core. It features peripherals, such as a temperature and humidity sensor, an ambient light sensor, etc. The board can be interfaced with screens. The board is mainly used to detect the current consumption of ESP32 modules in a normal operation state or in sleep mode, when connected to different peripherals.
ESP-Prog is one of Espressif’s development and debugging tools, with functions including automatic firmware downloading, serial communication, and JTAG online debugging. ESP-Prog’s automatic firmware downloading and serial communication functions are supported on both the ESP8266 and ESP32 platforms, while the JTAG online debugging is supported only on the ESP32 platform. ESP-Prog uses FT2232HL as its USB Bridge Controller chip.
Micro USB 5V 1A 18650 TP4056 Lithium Battery Charger Module
Led indicator- red is charging Green is full charged.
100% brand new and high quality
Charge module- Linear charging.
Led indicator- red is charging Green is full charged.
Input interface- micro USB.
Work temperature-.10° to 85°.
Ampere meter can only be connected to 5v input end of the module.
It is better that the charging current is 37% of the battery capacity. If you charge to the battery of 1000mAH, current of 400 is enough.
The connection wire should not be too thick.
Make sure the connect point is good.
If the input voltage is too high, like 5.2v, the current will be less than 1000mA, it is normal. It is protection function, auto-substract the charging current to avoid burn damage to chip.
1 x 5V Micro USB 1A 18650 Lithium Battery Charging Board Charger ModuleProtection
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Rotary Encoder Module KY-040
How it works: incremental encoder is a displacement of the rotary pulse signal is converted to a series of digital rotary sensors. These pulses are used to control angular displacement. In Eltra angular displacement encoder conversion using a photoelectric scanning principle. Reading system of alternating light transmitting window and the window is not consisting of radial indexing plate (code wheel) rotating basis, while being an infrared light source vertical irradiation light to the code disk image onto the receiving on the surface. Receiver is covered with a diffraction grating, which has the same code disk window width. The receiver’s job is to feel the rotation of the disc resulting changes, and change the light into corresponding electrical changes. Then the low-level signals up to a higher level, and generates no interference square pulse, which must be processed by electronic circuits. Reading systems typically employ a differential manner, about the same but the phase difference of the two waveforms different by 180°compared to the signal in order to improve the quality and stability of the output signal. Reading is then the difference between the two signals formed on the basis,thus eliminating the interference.
Soil Hygrometer Humidity Detection Module
Brand new and high quality. This is a simple water sensor, can be used to detect soil moisture Module Output is high level when the soil moisture deficit,or output is low Can be used in module plant waterer device, and the plants in your garden no need people to manage Operating voltage: 3.3V-5V Dual output mode,analog output more accurate A fixed bolt hole for easy installation With power indicator (red) and digital switching output indicator (green) Having LM393 comparator chip, stable Panel PCB Dimension: Approx.3cm x 1.5cm Soil Probe Dimension: Approx. 6cm x 3cm
Mini Scale Electronic Load Cell Weighing Sensor 5KG
Model:YZC-133 Operating voltage: 5-10V Force variation output: voltage signal Type: 5Kg Package includes: 1PCS YZC-133 Mini Scale Electronic Load Cell Weighing Sensor 5KG
TFT Display 1.4 Inch IPS 7P SPI HD 65K Full Color LCD Module ST7735
Display Size: 1.44 inch Material: TFT LCD Resolution: 128 x128 display Control chip: ST7735 Display area: 25.5×26.5mm
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TP4056A Li-ion Battery Charging/Discharging Module
TP4056A Li-ion Battery Charging/Discharging Module
This pins outputs the positive voltage from battery. It should be connected to the circuit which has to be powered by the battery
Outputs positive voltage from USB cable to charge to battery. It should be connected to the positive of the battery
Outputs negative voltage from USB cable for charging battery. It should be connected to negative of the battery
This pin outputs negative voltage from battery. It should be connected to the ground of circuit which has to be powered by the battery
Should provide 5V, can be used if charge cable not available
Should provide ground of the 5V supply, can be used if charge cable not available
This LED turns on while the battery is charging
This LED turns on after the battery is fully charged
- This module can charge and discharge Lithium batteries safely
- Suitable for 18650 cells and other 3.7V batteries
- Charging current – 1A (adjustable )
- Input Voltage: 4.5V to 5.5V
- Full charge voltage 4.2V
- Protects battery from over charging and over discharging
- No verse polarity protection
Note: For more details, the TP4056A datasheet can be found at the bottom of the page
Where to use TP4056 Charging Module:
This module is most commonly used with all projects involving a Lithium-ion battery. As we know a lithium battery should not be overcharged or over discharged, hence this module will monitor the voltage level of the battery during charging and discharging. If the values go beyond critical value, the module will automatically disconnect the circuit and protect your battery.
So If you are looking for a module using which you can safely use your Lithium battery for both charging it and for connecting it to your circuit, then this module could be the right choice for you.
How to use TP4056 Module:
It is always good to be careful while working with Lithium batteries. The module operates with 5V which can be provided by the USB mini cable that is commonly used for charging smartphone. You can use any type of mobile charger and its cable to power this module. If you are planning to power it directly without the cable, then the 5V should be connected to IN and the IN – should be connected to ground.
Lithium-ion battery should be connected as shown in the pin diagram above. The module does not have a reverse polarity protection, so be very careful while connecting your battery. Use a multimeter to check for the polarity of your battery, if connected in reverse your module will heat up immediately which would most likely kill it. If connected correctly and charger is turned on, the RED led will go high indicating that the battery is being charged. The charging process is controlled by the TP4056 Liner voltage IC whose circuit diagram is shown below (the protection circuit is not shown)
By default the charging current of the module will be 1A, it can be controlled by adjusting the resistor RPROG (R3 on module) shown in the circuit diagram. details of the same can be found in the datasheet of the TP4056 given below.
Once the module charges the Lithium battery completely, it will automatically stop charging and the Red LED will turn off and the Green LED will turn ON to indicate the completion. Now the circuit can be connected to the Circuit (Load) which has to be powered by this battery as shown in the pin diagram above. The module will monitor the voltage of the battery as its being consumed by the circuit (load). When it goes below the critical value (3.7V) the module will automatically disconnect your battery form the load and protect your battery from over discharge.
- Charge and Discharge Lithium cells
- Commonly used with 18650 Li-ion batteries
- Portable electronics
- Power banks
- Used with 5V booster for powering Arduino projects
Using the TP4056: There’s a right way, and a wrong way for safe charging of Lithium Ion batteries with this chip!
An easy to use battery charger chip.
The TP4056 chip is a lithium Ion battery charger for a single cell battery, protecting the cell from over and under charging. It has two status outputs indicating charging in progress, and charging complete and a programmable charge current of up to 1A.
You can use it to charge batteries directly from a USB port since the working input voltage range is 4V ~ 8V. However, remember the maximum current from a USB port is 500mA.
Here you are looking at the 3 chip breakout board (TP4056. middle, DW01A. top right, and 8205A dual MOSFET. bottom right).
- How to use the TP4056 breakout board.
- How to use the TP4056 safely.
- How the DW01A works on the TP4056 breakout board.
- How to set temperature limits using the TP4056 TEMP input.
Note: You need to change the current programming resistor on the breakout board to match the lithium battery you are using. the default is 1.2k which is for a 1Ah (1000mAh) battery.
Lithium batteries can be dangerous if not charged properly and that’s why the TP4056 is useful as it stops over voltage and current charging by detecting specific voltage conditions.
There are a lot of circuits out there that show the use of the TP4056 as both a charger and a load driver. Not Good. If a load is attached to the battery while charging, then the TP4056 may not detect when the charge current has fallen to C/10. So it could continue charging. this could be dangerous.
You should never use the TP4056 as a charger and as a load driver at the same time. When charging the battery, switch off the load, and when loading the battery, switch off the charger. Alternatively use a PMOSFET, a resistor and a Schottky diode (See page 2 on how to do this).
Lithium batteries can not absorb overcharge. the current must be cut off after charging. If not there could be thermal runaway.
TP4056 module Datasheet
Download the TP4056 Datasheet here.
[trckl = Trickle charge, trhsy = Trickle Charge Hysteresis]
TP4056 Current Programming Resistor
The programming resistor (R3 or Rprog) is set to 1k2 which provides 1A programming charge rate or 1C. If your battery is not 1000mAh (1Ah), then you need to remove R3 and replace it with the correct one following the information in the table on the right.
TP4056 Status indicator LEDs
The table shows the state of LEDs for various charging states:
TP4056 Charger Module Schematic
This is the schematic of the popular breakout board with label 03962A this shows the TP4056 pinout for the breakout board.
[ Source:www.sunrom.com/p/lithum-battery-charger-with-protection-microusb ]
When charging a battery using the above board connect the battery to B and B- and disconnect OUT and OUT- from your circuit. When using the battery disconnect the 5V input and take the output voltage from OUT and OUT- to your circuit.
The following diagram shows a typical setup (from the datasheet). The block diagram also shows the TP456 pinout for the 8 pin SMD device.
Here you can see the two status LEDs (CHRGn, STDBYn), Battery connection (BAT), Current control connection (PROG) and TEMP connection. Some LI batteries have an internal thermistor that you can connect as shown above. In the breakout boards available generally TEMP is not used and connected to Ground.
TP4056 reverse polarity protection
The TP4056 does not give you reverse polarity protection so if you wire up the battery the wrong way round then you’ll get smoke!
Actually, there is no TP4056 reverse polarity protection and the DW01A battery protection IC (on the breakout board) is being used in the wrong way (or not in the best way)! If used correctly the DW01A does provide reverse polarity protection for a battery.
DW01A Battery Protector Chip
On some breakout boards there are an extra 2 chips. One is the DW01A and the other is a dual N Channel MOSFET required by the DW01A chip.
This chip provides battery protection but it is not used in the right way on this board and so only provides short circuit protection (and over current protection). It should provide all of the following:
Charger input protection
- Short Circuit detector.
- Over current detector.
- Charger Detector.
- Reverse charger detection (overstress high current?).
- Overcharge Detector (battery voltage too high).
- Overdischarge Detector (battery voltage too low).
DW01A and TP4056 breakout Board
On the breakout board, the chip is soldered to the TP4056 so this can never be connected the wrong way round at the charger input. At the other side the DW01A does not protect from connecting the battery the wrong way round!
- Stops discharging at voltages below 2.9V; Here trickle charge activates. The DW01A threshold is ~ 2.4V; So it will never activate.
- Stops charging at voltages above 4.2V. The DW01A threshold is ~ 4.3V; So it will never activate.
The only function that will operate is the overcurrent protection and short circuit protection. These will activate at around 3A when using the 8205A dual Mosfet.
This article continues on page 2, where you can find out how to use the TP4056 in the correct way (most circuits are not correct).