[Successful actual measurement] Universal crystal oscillator tester

Introduction: Universal crystal oscillator tester, quickly detects the quality of crystal oscillators

Schematic PCB

[Successful actual measurement] MQ-2 solution verification board

Introduction: This project is used to verify the scheme verification design of LCSC’s gas detection module MQ-2 (LCSC No. C99296)

Schematic PCB

[Successful actual test] Water leakage detection alarm

Introduction: For some reason, the fish tank at home always overflows. Often by the time it is discovered, the room is already ready for swimming. In order to prevent such accidents from happening again (for sure), I designed this low-cost, efficient water leakage detection alarm.

Schematic PCB

[Successful test] USB-HUB docking station based on SL2.1A

Introduction: USB-HUB docking station based on SL2.1A

Schematic PCB

Solution verification board based on SE2515-HF

Introduction: This project is a solution verification board based on SE2513-HF

Schematic PCB

Three-way wireless remote control switch based on NRF24L01-transmit

Introduction: Three-way wireless remote control switch based on NRF24L01

Schematic PCB

Three-way wireless remote control switch-receiver based on NRF24L01

Introduction: Three-way wireless remote control switch based on NRF4L01

Schematic PCB

[New version of program in preparation] Infrared thermometer gun

Introduction: MLX90614-based thermometer (to be tested) During the current epidemic, electronic forehead thermometers are in short supply, but as an electronics enthusiast, why can’t you make your own one?

Schematic PCB

[Successful test] USB card reader

Introduction: USB card reader based on GL827L

Schematic PCB

[Successful test] 1-way IoT switch based on ESP12

Introduction: 1-way IoT switch based on ESP12 (successful)

Schematic PCB

【Second test in progress】Smart WiFi IoT socket

Introduction: Dual-channel wireless IoT switch based on ESP12

Schematic PCB

[Successful actual measurement] Solution verification board based on CH340G

Introduction: This project is used to verify the solution verification design of LCSC’s USB chip CH340G (LCSC number C14267) https://item.szlcsc.com/14927.html

Schematic PCB

[Successful test] Expansion board based on arduino UNO

Introduction: Expansion board based on arduino UNO

Schematic PCB

[Successful test] 3.7V boost 5V power bank circuit based on IP5306

Introduction: 3.7V boost 5V power bank circuit based on IP5306

Schematic PCB

[Successful test] Touch dimming circuit

Introduction: A touch dimming desk lamp circuit

Schematic PCB

Drawer/cabinet magnetic lighting

Introduction: The light in the cabinet where I store medicines is relatively weak, making it difficult to find things, so I plan to make a sensor light based on the 3144 Hall sensor.

Schematic PCB

[Successful test] 2-way relay module with optocoupler

Introduction: 2-way relay module with optocoupler

Schematic PCB

[Hongshun Training Camp] I want to fly!

Introduction: The hardware is based on NAZE32, and the software is based on Betafight. Use HK32F103C8T6 as the main control chip to push domestic chips into a development boom

Schematic PCB

STC15F development board

Introduction: Design based on STC15F2K60S2 minimum system development board

Schematic PCB

ESP32 ink screen driver board

Introduction: An ESP-32 ink screen development board

Schematic PCB