[Open Source] STM32G071CBT6 Minimum System Board Development Board

STM32G071CBT6.rar

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Using AD5516-3, 16-channel serial digital-to-analog converter

The EVAL-AD5516-3EBZ, evaluation board uses the AD5516-3, a 16-channel serial digital-to-analog converter. The device contains 16 voltage output DACs. Each DAC is written to via an 18-bit write to a 3-wire serial interface. Channel selection is accomplished by address bits A3-A0. The AD5516-3 is packaged in a 74-lead LFBGA. The output voltage range of the AD5516-3 is ±10 V. The evaluation board contains an AD780, which is a pin programmable 3 V high precision bandgap voltage reference

EVAL-AD5516-3EBZ, Evaluation Board using AD5516-3, 16-channel serial digital-to-analog converter.pdf

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ADR5041B 2.5 Vout Precision Micropower Shunt Mode Voltage Reference

Typical applications for the ADR5041B 2.5 Vout precision micropower shunt mode voltage reference. Designed for space critical applications, the ADR5040/ADR5041/ADR5043/ADR5044/ADR5045 are high precision shunt voltage references in ultra small SC70 and SOT-23 packages.

Typical Application of ADR5041B 2.5 Vout Precision Micropower Shunt Mode Voltage Reference.pdf

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How to use the IRS20957S Class D audio controller and gate driver IC

IRAUDAMP6, Dual Channel 250 W (8 Ohm) Half-Bridge Class-D Audio Power Amplifier, using IRS20957S and IRF6785. This reference design demonstrates how to use the IRS20957S Class-D audio controller and gate driver IC, implement protection circuits, and design an optimal PCB layout using the IRF6785 direct FET MOSFET.

IRAUDAMP6, Dual Channel 250 W (8 Ohm) Half-Bridge Class D Audio Power Amplifier using IRS20957S and IRF6785.pdf

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

I have made a small quadruped robot with esp8266, and I remade it with esp32C3 this time. The main reason is that C3 has Bluetooth and can be remotely controlled with Bluetooth, which is very convenient. You can connect and play at any time without occupying the mobile phone WiFi. And although esp32C3 has few pins, it can also reserve SPI interface in addition to the control of 8-way servos, so you can also add tft RGB display to the robot, and the robot has become more prominent. The appearance structure of the robot comes from: Q1 lite Simple Quadruped Robot by author jasonleung8866 on T station. The page address is: https://www.thingiverse.com/thing:2732957. It is a secondary creation based on the original work, adding the upper and lower covers of the fuselage and the robot head, hiding the mainboard in the casing, and using 16240 lithium batteries. esp32c3 uses Hezhou's 9.9 esp32c3 development board, which greatly simplifies the circuit design. There are only a dozen parts that need to be soldered by yourself, which is very easy. The remote control software is developed using WeChat applet. Since I am not good at writing applet, the host computer is currently just a simple demo. It is being submitted for review and may not be passed. If not, the source code of the applet is also open source. You can download the development environment of the applet and test it on the real machine, and you can use it on your mobile phone. The code is developed using Arduino IDE. For esp32 development, you need to install ESP32 SDK first, and then select ESP32C3 as the development board. Hezhou's ESP32C3 development board Flash Mode: select DIO to run normally. Hezhou 9.9's esp32c3 development does not have a serial port chip. The burning uses the esp32c3's own USB virtual serial port. Since the program occupies 18 and 19 IO ports, when burning the program, you need to press the BOOT button on the development board and then press the RES button to let the development enter the burning mode and then select the corresponding serial port and burn it. The version with a serial port chip does not need it. The battery anti-reverse connection circuit is made with a mos tube, and the battery cannot be powered if it is installed in reverse.

3D printer STL file.zip

ESP32C3_XiaoSiZu_BLE.zip

ESP32_C3_ISR_Servo.zip

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