[Solicitation Order] Search for dot matrix clocks

Introduction: An Xinke ESP-C3-12F module developed using MicroPython, with a WS2812 matrix lamp bead, used to display the current time.

Schematic PCB

esp32_clamp_link

Introduction: esp32 burning folder, onboard cp2104 serial port chip, with two positioning pins (stuck in burning pcb).

Schematic PCB

running water lamp

Introduction: Simple water lamp production, the effect is very good

Schematic PCB

GD32L233-DEMO1

Introduction: GD32L233-START evaluation - comprehensive DEMO.

Schematic PCB

Windows hello face recognition login

Introduction: Windows hello face recognition login

Schematic PCB

gas sensor

Introduction: Gas Sensor + OLED

Schematic PCB

#The 7th Lichuang Electric Competition#USB voltage and current meter

Introduction: Jialichuang Summer Training Camp 2022, USB ammeter made based on N32G430C8L7, can check the voltage and current when USB is working.

Schematic PCB

555 chip speed regulation

Introduction: 555 chip makes dimming and speed control, classic PWM. I originally wanted to use a ready-made one, but I made one that my brothers made public, but it didn’t work, so I had to draw it myself.

Schematic PCB

Electric screwdriver 1.1

Introduction: Adjustable Speed ​​Electric Screwdriver 1.1

Schematic PCB

tpa 3118 power amplifier

Introduction: The mono power amplifier of the tpa3118 chip is compatible with the tpa3116, and the output power is greater than the mono power. I was originally going to attach a 22x22 heat sink, but found that it didn’t heat up at all, so I didn’t attach it. I tried it and the sound quality was generally very loud. But there’s no background noise, so I’ll just use it.

Schematic PCB

22-Snowflake

Introduction: Second Prize in the 2022 Electrical and Electronic Breathing Lamp Design Competition of the School of Electrical Engineering of Guangzhou City Polytechnic Institute

Schematic PCB

elrs-rx-2.4g-pwm

Introduction: ELRS high-performance remote control protocol 2.4G receiver, outputs 5-channel PWM signal to directly connect to ESC and servo. It can also output the standard crsf protocol to connect to the flight control.

Schematic PCB

ELRS 2.4G transmitter-TFT color screen version

Introduction: ExpressLRS transmitter TFT color screen is more gorgeous, assembled using modules (ESP32 master control E28 RF), the quality and effect are guaranteed, and it is easy to make.

Schematic PCB

The 17th Smart Car STC16

Introduction: The 17th National College Student Smart Car Competition STC16 electromagnetic motherboard

Schematic PCB

Tuya Voice-2nd Floor-Cylindrical Speaker

Introduction: A layered circuit diagram designed according to the graffiti activity. 2 layers, length within 10CM, power layer, chip layer, speaker layer, button layer.
35MM, 32MM diameter

Schematic PCB

Small TV/Meow Meow Machine Burner--ch340g version

Introduction: Use type c interface to facilitate delayed use. Can be used in small TV meow machines

1.8W LED bulb

Introduction: A DC powered 1.8W LED bulb based on ET5120A

Schematic PCB

Bing Dwen Dwen

Introduction: The first PCB Bingdundun

Schematic PCB

Welding Lights

Introduction: Come back to complete the file

Schematic PCB

N32G430C8L7 core board

Introduction: N32G430C8L7 core board: This board is designed for learning N32G430C8L7. All IOs are lead out, ADC is powered separately, and the TYPE-C interface allows direct serial communication.

Schematic PCB