Self-use 12V-DCDC-5V-LDO-3.3V_with_NMOS

Introduction: Self-use 12V-DCDC step-down-5V-LDO step-down-3.3V, using NMOS to control the 12V power supply

Schematic PCB

Lelo Triangle V2 - adapted to 3205 motor and compatible with 2204 motor version

Introduction: This version is based on the triangle revision of 45 big guys. The brushless driver uses EG2133 to successfully use the simplefoc driver of esp32-arduino. However, under special circumstances, the MOS tube may break down and smoke. Please use a protected lithium battery to prevent accidents!

Schematic PCB

[Solicitation Order] USB power meter

Introduction: Reads USB voltage, current, and power information through the wifi module, supports fast charging protocol identification and deception, and uploads measurement information to the server.

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esp8266 monochrome screen clock

Introduction: 1.3-inch esp8266 monochrome screen network clock

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2-key keyboard based on Digispark

Introduction: Based on Digispark's 2-key keyboard bilibili:luncy_233 qq:21546998 The code is available but my board is broken (((

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【Training Camp】Robot Puppy

Introduction: Use Yuanqi Pai as the main control to drive the servo to simulate the bionic puppy, and use the voice control module for external control.

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Radio | Morse Code CW Transmission Practice Device

Introduction: CW transmission practice device with functions of random transmission test, listening and receiving messages, and error correction functions

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Bingdundun card reader

Introduction: Bingdundun Card Reader, please do not use it for commercial purposes. It is only for learning and appreciation. The copyright belongs to the Olympic Organizing Committee.

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PCF8575 module

Introduction: PCF8575 module, IO port expansion module, can be used to expand microcontrollers with insufficient IO ports. It supports input, output and interrupt triggering.

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EC11 Rotary Encoder Module

Introduction: A very small EC11 rotary encoder module, come and star it!

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esp8266-clock

Introduction: NTP digital tube clock produced using esp8266, aip1637 digital tube module, and DS1302rtc chip

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ESP32 small TV-2

Introduction: ESP32 electronic clock

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2021 e-sports K questions

Introduction: The independently designed and developed LED desk lamp with stable and adjustable illumination is divided into dimming desk lamp and digital display illumination meter.

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[Verified]Arduino UNO R3 modern upgraded version

Introduction: A modern upgraded version of uno based on the original arduino uno.

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A modern MEGA2560

Introduction: Fully compatible with ArduinoMega2560; onboard USB to UART0; onboard 5V to 3.3V output; DC-DC step-down 5V can drive multiple servos

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CH573 EVM

Introduction: CH573 is a 32-bit RISC microcontroller integrating BLE wireless communication. The chip integrates USB, SPI, 4 serial ports, ADC, touch button detection, RTC and other peripherals.

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[Verified] ATtiny13 encoder speed dimming module

Introduction: Using a rotary encoder, a "high-end" dimming and speed control module based on ATtiny13A

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magnifier

Introduction: I made a stand for the magnifying glass, which is convenient and practical, haha

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LittlePC_Clock

Introduction: Desktop weather clock based on the HoloCubic project, copied from: https://lceda.cn/guo-0512/holocubic

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18b20

Introduction: A very small 18B20 interface board. A 4.7k pull-up resistor can be soldered on the board, eliminating the trouble of directly plugging and unplugging components on the breadboard.

Schematic PCB