[Successful test] Jingyi small TV 5th generation

Introduction: Compact little TV (hardware compatible with WiFi Killer 2 generation)

Schematic PCB

Infrared flashlight remote control (high power)

Introduction: When the room is very large (such as a classroom), we will find that the remote control does not work very well. At this time, when we open Baidu, we will find that there is no solution? ? ? Then you can only rely on yourself.

Schematic PCB

esp8266 core board, compatible with 12e

Introduction: Packaging solution based on esp8266ex

Schematic PCB

Mengxin esp8266 development board

Introduction: Nothing special, suitable for newcomers

Schematic PCB

esp12s compatible PCB

Introduction: Open source testing, the schematic diagram adopts official modifications, please test it with experts, you will be rewarded for testing, contact information: QQ2675653184

Schematic PCB

Equal information bit balancer (

Introduction: This is designed for students. As for why you want to review it carefully, it may not be enough to point out www. There are four options ABCD, no, four buttons and a send button, each responsible for them (----Content deleted-- --) For entertainment purposes only, please do not use it for improper purposes.

Schematic PCB

XianWill emcu D2 (new concept wemos)

Introduction: I think it’s time to go modular. Is there still a situation where SPIflash is not enough? Grab An Xinke’s job www

Schematic PCB

Networking||Mechanical Keys||Morse Code||Telegraph

Introduction: Original name: Three-key telegraph network (using esp8266 to access the Internet or LAN) There are only three keys. Use Morse code or Wangsi code. Use mechanical key switches, 12864OLED screen, lithium battery, typec, esp8266

Schematic PCB

3.27-inch ink screen development board

Introduction: Using 3.27-inch ink screen + esp8266

Schematic PCB

Two-axis electric photography slide controller

Introduction: Two-axis gimbal controller, which can control the slide rail and rotation

Schematic PCB

DIY solder paste machine

Introduction: DIY solder paste machine, entertainment product, not very valuable in practical application, soldering is not very stable, just play with it.

Schematic PCB

Infrared receiver 4 USB outputs

Introduction: Infrared receiver controls 4 USB outputs

Schematic PCB

Quad USB hub

Introduction: Second revision

Schematic PCB

esp32 watch v1.0 lower layer

Introduction: esp32 bracelet test

Schematic PCB

esp32 watch v1.0 upper layer

Introduction: Testing

Schematic PCB

SI5351C module

Introduction: SI5351C module

Schematic PCB

8266 core board

Introduction: Today, Essence 8266 for 1 yuan is very good, but many friends may not be able to buy it or are too lazy to draw the board, so I drew this core board that is compatible with esp12f 12s 07s. The resistors and capacitors are compatible with direct plug-in 0805 0603 , no USB

Schematic PCB

[Tuya Smart] IoT Thermometer +540724A

Introduction: The typec interface connects to the Arduino serial port to download programs/view debugging information. The virtual serial port is connected to the Tuya WB3S module, the sht30 measures temperature and humidity, and the 0.96-inch OLED displays the temperature and humidity. Use TP5400 as battery charge and discharge management.

Schematic PCB

Tuya Smart_Arduino development board

Introduction: Arduino+Tuya CBU module, an IoT development board for learning Tuya intelligence, integrates photoresistor, buttons, LED lights, WS2812 lights, and relays. Use the hardware serial port to download and the software serial port to communicate with the Tuya module.

Schematic PCB

Hole patch integrated board

Introduction: Hole patch integrated board

Schematic PCB