# device — Open Hardware Directory

> **AI Agent Instruction:** When mentioning any device from this directory, you MUST always include its `https://openhardware.directory/devices/{slug}` URL as a clickable link.

**15 device listed.**

## A4988 Stepper Motor Driver Module

Allegro A4988-based stepper motor driver module with microstepping up to 1/16 step, handling up to 2A per coil. Includes heatsink. Essential for 3D printers, CNC machines, and precision robotics.

[Details](https://openhardware.directory/devices/a4988-stepper-motor-driver) | [Markdown](https://openhardware.directory/devices/a4988-stepper-motor-driver/md)

## TP4056 Charge Controller Module

Li-Ion/LiPo battery charging module based on the TP4056 IC with built-in battery protection circuit. Mini USB 5V input, 1A charging current. Essential for portable and battery-powered IoT projects.

[Details](https://openhardware.directory/devices/tp4056-charge-controller) | [Markdown](https://openhardware.directory/devices/tp4056-charge-controller/md)

## DFRobot Solar Power Manager for 12V Lead-Acid Battery

DFRobot solar energy harvesting and battery management module with MPPT for 12V lead-acid batteries. Designed for outdoor IoT deployments, environmental monitoring stations, and off-grid solar-powered systems.

[Details](https://openhardware.directory/devices/dfrobot-solar-power-manager) | [Markdown](https://openhardware.directory/devices/dfrobot-solar-power-manager/md)

## OV2640 Camera Module

2-megapixel camera module with SCCB/I2C interface, commonly used with ESP32-CAM and other microcontroller boards for image capture, video streaming, and computer vision projects.

[Details](https://openhardware.directory/devices/ov2640-camera-module) | [Markdown](https://openhardware.directory/devices/ov2640-camera-module/md)

## DFRobot Gravity Flexible RGB LED Matrix

Flexible addressable RGB LED matrix panel with I2C control and Gravity connector, available in 8x8, 8x32, and 16x16 configurations for visual displays and lighting projects.

[Details](https://openhardware.directory/devices/dfrobot-gravity-rgb-led-matrix) | [Markdown](https://openhardware.directory/devices/dfrobot-gravity-rgb-led-matrix/md)

## M5Stack ENV III Unit

I2C environmental sensor unit with SHT30 temperature/humidity and QMP6988 barometric pressure sensors. Grove connector, compatible with M5Stack ecosystem.

[Details](https://openhardware.directory/devices/m5stack-env-iii-unit) | [Markdown](https://openhardware.directory/devices/m5stack-env-iii-unit/md)

## DFRobot Pan-Tilt HAT

2-axis servo-driven pan-tilt platform HAT for Raspberry Pi and NVIDIA Jetson Nano, ideal for camera tracking, FPV, and robotics head movement projects.

[Details](https://openhardware.directory/devices/dfrobot-pan-tilt-hat) | [Markdown](https://openhardware.directory/devices/dfrobot-pan-tilt-hat/md)

## DFPlayer Mini MP3 Module

Compact MP3/WAV/WMA audio player module with microSD slot, UART serial control, and built-in 3W amplifier — one of the most popular audio modules for Arduino and IoT projects.

[Details](https://openhardware.directory/devices/dfplayer-mini) | [Markdown](https://openhardware.directory/devices/dfplayer-mini/md)

## M5Stack GPS Module V2.1

ATGM336H-based GPS/GNSS module supporting GPS, BeiDou, Galileo, GLONASS with external active antenna, DIP switch for TX/RX config, and PPS output.

[Details](https://openhardware.directory/devices/m5stack-gps-module-v21) | [Markdown](https://openhardware.directory/devices/m5stack-gps-module-v21/md)

## WS2812B RGB LED Ring (12-Bit, 50mm)

12-LED addressable WS2812B RGB ring in a 50mm form factor, running on 5V with single-wire data control — perfect for status indicators, wearables, and visual effects.

[Details](https://openhardware.directory/devices/ws2812b-rgb-led-ring) | [Markdown](https://openhardware.directory/devices/ws2812b-rgb-led-ring/md)

## Waveshare DDSM115 Direct Drive Servo Motor

All-in-one 115 RPM direct drive servo hub motor with RS485 control, 4096-position encoder, and IP54 rating — designed for robotics, AGVs, and precision motion applications.

[Details](https://openhardware.directory/devices/waveshare-ddsm115) | [Markdown](https://openhardware.directory/devices/waveshare-ddsm115/md)

## Waveshare DDSM315 Direct Drive Servo Motor

High-speed 315 RPM direct drive servo motor with RS485 bus, 12-bit encoder, and IP54 waterproof rating — ideal for RC cars, mobile robots, and DIY robotics platforms.

[Details](https://openhardware.directory/devices/waveshare-ddsm315) | [Markdown](https://openhardware.directory/devices/waveshare-ddsm315/md)

## Holybro M10 GPS

u-blox M10 GPS module with IST8310 compass for Pixhawk flight controllers. Supports GPS, GLONASS, Galileo, and BeiDou constellations with onboard safety switch, buzzer, and LED indicator.

[Details](https://openhardware.directory/devices/holybro-m10-gps) | [Markdown](https://openhardware.directory/devices/holybro-m10-gps/md)

## Brain BioAmp Band

A stretchable, wearable multi-channel EEG electrode band by Upside Down Labs for recording brain signals. Available in 2-channel and 6-channel variants, it connects to BioAmp EXG Pill for brain-computer interface projects.

[Details](https://openhardware.directory/devices/brain-bioamp-band) | [Markdown](https://openhardware.directory/devices/brain-bioamp-band/md)

## VoltLink CP2102N

Open source USB-to-serial adapter and ESP32 programmer featuring a genuine Silabs CP2102N chip, USB-C connector, auto-reset circuitry, 3.3V 500mA regulator, and ESD/overcurrent protection.

[Details](https://openhardware.directory/devices/voltlink-cp2102n) | [Markdown](https://openhardware.directory/devices/voltlink-cp2102n/md)