[Internet of Things] Hongmeng Smart WIFI Switch +4233031A

Introduction: Use Hongmeng HI3861 chip to realize remote control of physical switches

Schematic PCB

Open Source High Voltage Differential Probe OP5205

Introduction: Continue to open source high-voltage differential probes and turn them into a tool that is easy to use and loved.

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Simple electronic load 2.0

Introduction: A beggars version of a simple constant current electronic load meter

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IP5508

Introduction: Yingjixin IP5508 2A charging/2.4A discharging mobile power supply SOC verification board

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ESP8266 spot welding machine 3.0

Introduction: The handheld spot welding machine based on ESP8266 module control supports 1800A high current lithium battery spot welding and has functions such as voltage measurement, welding parameter setting, mode switching and display.

Schematic PCB

ESP8266 spot welding machine 2.0

Introduction: The handheld high-current spot welding machine controlled by the ESP8266 module has functions such as voltage measurement parameter setting mode switching and display.

Schematic PCB

ESP32-PICO-KIT

Introduction: This is an ESP32 mini development board imitating the Zhihuijun ESP32 development board, redesigned and equipped with a 0.96-inch 80*160 pixel color LCD screen MCU6050 attitude sensor VL6180 proximity sensor lithium battery charging and other functions.

Schematic PCB

DC-ATX-5.0

Introduction: 13-40V wide voltage input step-down DC-ATX power supply supports two high-power 12V8 PCPU/GPU power outputs, one 4P SATA power output, and one 24P motherboard power output

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DAP-LINK

Introduction: The privately customized version of DAPlink emulator supports TYPE C and Micro-B data line interfaces, strengthens 3.3V power output, and adds ESD overvoltage and overcurrent protection and other functions.

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ESP8266 speedometer

Introduction: A multi-purpose speedometer developed based on ESP8266 chip

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Rechargeable battery 2.0

Introduction: 1.5V rechargeable battery has ultra-low 3.8uA quiescent current. Lithium battery overvoltage, undervoltage and overcurrent protection uses ordinary 5V TYPE-C interface to charge lithium battery. TPS62736 programmable output voltage ultra-low power buck converter steps down to 1.5V output

Schematic PCB

【RA】Environmental detection device V1.0

Introduction: Using the Renesas R7FA2E1A72DFL#AA0 chip, through the chip's built-in hardware i2c and BH1750 modules, the BMP280 communication monitors the ambient light intensity, air pressure, and temperature in real time and displays them on the OLED screen, and transmits the data to the host computer through serial communication.

Schematic PCB

10 inch fill light WS2812-1/8 piece

Introduction: Provide cases where large PCBs are reduced to small ones and then spliced ​​together to reduce DIY costs.

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[Internet of Things] Hongmeng Smart Switch

Introduction: Smart WiFi control switch based on Hongmeng

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Smart switch-GB 86 box

Introduction: Smart switch - national standard 86 box, compatible with single button, double button and three button. There are two relays that can be used as a set of transfer relays for double switches.

Schematic PCB

gal programmer

Introduction: GAL16v8 and other universal programmable logic array programmers took more than a year to complete. The equipment cost is extremely low. There is no need to buy a cheating big-name programmer. The system needs to be xp32-bit or below! ! And the motherboard’s native parallel port

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DC-DC18V synchronous step-down 2.5A RY3831 evaluation board

Introduction: DC-DC Buck 18V synchronous step-down 2.5A RY3831 replaces the FR9886 Demo evaluation board

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Noble cement resistive load

Introduction: 2022 Foshan City Nanhai District Winter Holiday Good Homework Competition entry, the board is made of four-layer boards (convenient for shedding wool in hq

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SU-03T-spk-mini

Introduction: The smallest intelligent voice assistant based on SU-03T

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Power 3.0 output tail panel

Introduction: CNC power supply 3.0 tail plate

Schematic PCB