[Open Source] Using ESP32C3 to make a mini quadruped robot

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RTL8822CS Module Hardware Reference Design Guide

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RTL8822BS module peripheral application reference circuit and driver information

For the integration of wifi module, the most urgent things in the early stage are
1: the application reference of wifi module peripheral circuit in hardware
2: the driver information in software

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atmega8-328 prototype board: good voltage filtering function

This board was created for the mcudude library and has good voltage filtering, reducing reset time via a c10 capacitor (10nF!!) on the dtr line of a ch340 system. It would be nice to solder a precision socket under the x1 oscillator, it gives you the opportunity to try different frequencies (useful for rs232 communication for example)​

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W487304AS1C1_garage board

1-layer PCB 50.1 x 79.9 mm FR-4, 1.6 mm, 1, tinned with leads, blue solder mask, white silkscreen;

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[Open Source] Design of a Bluetooth-controlled car system based on STM32

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[Open Source Materials for Competition] Electromagnetic Gun Circuit Diagram Design Materials

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Design of multi-channel stepper motor drive circuit based on STM32

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Flight control remote controller circuit scheme based on STM32 design (schematic diagram + pcb + source code)

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ThinkBoard LoRa Node development board based on ESP32 (reference solution)

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Dream Maker 3D Printer Mainboard Reference Schematic

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Design of digital oscilloscope based on STM32 (complete design information)

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High-quality Bluetooth speaker design reference

Although the common Bluetooth speakers on the market are relatively cheap, their sound quality is far from satisfactory and cannot meet people's pursuit of high-quality sound. The fundamental reason is that the Bluetooth speaker box is too small and the speaker is too small, resulting in a serious lack of bass; the resonance of the plastic box causes muddy sound; the speaker is too close and the near-field sound is too narrow, etc. This design reference integrates the MaxxAudio sound enhancement chip NPCA110P, which greatly improves the problems of muddy sound, insufficient bass, and narrow near-field sound.

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RGB Sudoku Game Based on PSoC 6 BLE (Schematic + Code)

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Four-axis aerial photography aircraft circuit scheme is free and open source

Four-axis drone based on STM32. With STM32 as the control core, four-axis aircraft as the carrier, and gimbal as the aerial photography system. The hardware consists of flight control circuit, power management, communication module, power system, frame, and gimbal servo system. The algorithm uses simple and stable quaternion plus complementary filtering as the attitude solution algorithm, and PID as the controller to realize flight, gimbal stabilization and other functions. It has the characteristics of flexibility, lightness, ductility, and good adaptability.

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Open source smart bracelet project reference solution based on NRF51822

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Harry Potter style Bluetooth speaker design

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Freescale's MKM14Z64-based smart socket reference design

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Microchip Passive Keyless Entry (PKE) Reference Design

The manual describes a passive keyless entry (PKE) system upgrade for existing remote keyless entry (RKE) applications. The key design includes a PIC16F639 microcontroller with an integrated three-axis analog front-end (AFE). A PIC18F2680 microcontroller is used to implement the low-frequency transmitter.

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Design of air environment monitoring system based on ZIGBEE (Graduation Project)

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