Solder paste machine 2

Introduction: Extremely low-cost solder paste machine

Schematic PCB

DAPlink emulator V2

Introduction: DAP emulator is an open source emulator officially launched by ARM. It is copyright-free and freely produced.

1. No driver required, just plug it in and use it.

2. Supports all Cortex core microcontrollers, regardless of manufacturer.

Schematic PCB

Automotive Simulation Control System_ Lichuang & Renesas Training Camp

Introduction: Use Renesas MCU as the main control to create a car simulation control system. Through the logic design of the circuit, it simulates car startup, front and rear gears, speed gears, accelerator, brakes, speed light indication and screen display, overspeed warning, left and right steering, front lights, reversing lights, brake lights, whistle, emergency double flash and other functions.

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AT89S52 solution colorful flowing water lamp

Introduction: This is a colorful flowing water lamp developed using s52 microcontroller. It is currently open source and supports secondary development. If you are interested, you can visit my studio @www.sonlin.xyz

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Bingdundun-Xuerongrong nfc keychain

Introduction: Bingdundun-Xuerongrong’s shared version calls out the “passed” top streamers

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Adjustable desk lamp

Introduction: This work is the K question of the 2021 National College Student Electronic Design Competition, an adjustable LED desk lamp, shown below!

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[Solicitation Order] EHome Environmental Sensor V1.0

Introduction: EHome environmental sensor integrates ambient light, temperature and humidity, and air quality sensors. A three-in-one designed product can meet your environmental data requirements.

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【Solicitation Order】EHome Camera Relay Module V2.0

Introduction: EHome camera relay module V2.0 adopts ESP32CAM+4-way relay design. It can be applied to smart agriculture, smart breeding and other projects.

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TDA1541 analog output-dual op amp

Introduction: TDA1541 decodes I/V and LPF, and other versions can be modified on this basis to adapt to the baseboard made by myself.

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Zhuque T12 soldering station (ESP32-WROOM-32U version)

Introduction: ESP32-WROOM-32U is a T12 soldering station with a PCB size of 78x28mm to fit the 88x38 case.

Schematic PCB

Zhuque T12 soldering station (modified version - not verified)

Introduction: The T12 soldering station controlled by ESP32-S only modified the USB to TTL part. The original ch340e could not implement automatic download mode and was updated to use ch340k. The screen uses 0.96-inch I2C OLED.

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DRSSTC/SSTC arc extinguishing driver board

Introduction: DRSSTC/SSTC arc extinguishing driver board, without music input, including normal mode and Burst (violent) mode

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[Training Camp] Internet of Things Small RGB Lamp +368313A

Introduction: Use Tuya Smart’s development-free WIFI module to connect to the network to control RGB lights, and can be connected to an external 5V light strip.

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ESP32C3 ink screen ornament

Introduction: Using Hezhou's ESP32C3 development board, we designed a detachable desktop mode screen ornament, which can display four modes of time, weather, ancient poetry, and pictures through wifi networking. Switching and updating between different modes can be achieved by pressing buttons.

Schematic PCB

esp8266 simple test

Introduction: esp8266-12f simple development board, refer to the official website document to add 1117-3.3v power supply, ch340e serial port uses USB3.0 interface

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nuc120re_download

Introduction: Offline programmer based on nuc120re

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New power amplifier circuit

Introduction: 15V powered Walkman speaker

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Component packaging test board_SMD

Introduction: Component packaging test board (SMD patch version)

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Raspberry Pi 3b mini expansion board

Introduction: A cheap 3b mini expansion board. The USB part needs to be removed and re-soldered. All pin headers use 2.54mm bidirectional pin headers.

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TouchGFX Demo board

Introduction: X-NUCLEO-GFX01M2 perfect version

Schematic PCB