Infrared voice assistant

Introduction: Infrared voice smart assistant based on Tuya Smart VWXR2-ES module

Schematic PCB

[Internet of Things] Hongmeng Smart Switch +492390A

Introduction: WIFI smart main control board based on HiSilicon HI3861LV100 chip module. Onboard buzzer, buttons and a 5V output terminal (IO control output), with built-in serial port download circuit. Each IO is a 3P pin header, and the power supply voltage can be selected from 5V or 3.3V. A status indicator light.

Schematic PCB

Adjustable power supply

Introduction: Second adapted version of a certain fish’s information

Schematic PCB

Ammeter

Introduction: Voltage and ammeter

Schematic PCB

PowerStation_power supply for desktop testing

Introduction: Suitable for low power, multi-voltage output, clear inventory product, without considering the load power, it is still useful for normal test components and new boards.

Schematic PCB

ESP32-S2-Saola-1-My

Introduction: esp32-s2-saola-1 compatible board, supported module list: ESP32-S2-WROVER ESP32-S2-WROVER-I ESP32-S2-WROOM ESP32-S2-WROOM-I

Schematic PCB

HX710 High Precision Voltage Meter

Introduction: HX710 makes a cheap high-precision voltmeter

Schematic PCB

AI infrared voice assistant

Introduction: AI infrared voice assistant developed based on zero code

Schematic PCB

Air quality detector

Introduction: ESP-12F main control module, can measure temperature and humidity, formaldehyde, TVOC, PM2.5

Schematic PCB

[Internet of Things] HM switch

Introduction:. . . . .

Schematic PCB

Application based on infrared receiving tube

Introduction: I did it out of boredom when the school was closed, and there happened to be a sensor class this semester.

Schematic PCB

[Internet of Things] Hongmeng IoT Smart WiFi Switch +583379W

Introduction: In the actual verification, the AMS1117 chip is not soldered, and the input and output pins are short-circuited with tin. Because the minimum voltage difference of AMS1117 is 1.2V, it cannot work normally with a 3.7V lithium battery. The main control chip can input a wide voltage, and the lithium battery The voltage can directly drive the MG90S servo.

Schematic PCB

K thermocouple reader

Introduction: K-type thermocouple cold junction compensation and temperature and voltage display

Schematic PCB

Power line finder

Introduction: Sometimes, when you need to find the wires in the wall, you can't see or touch them, and you scratch your head. Try this?

Schematic PCB

MP3429 Evaluation Board

Introduction: Project to test the performance of the synchronous boost chip MP3429

Schematic PCB

lora herding cattle base station 4G+MQTT

Introduction: This is the base station part that uses Lora to herd cattle. It collects GPS data and sends it to a base station 10 kilometers away through Lora. Then connect to MQTT through 4G and send it to the server

Schematic PCB

Lighting control panel

Introduction: An ordinary light control panel

Schematic PCB

Young people’s first T12 (discrete component PMOS-616 T12 control board)

Introduction: Young people’s first T12 (discrete component PMOS-616 T12 control board)

Discrete component QC adjustable decoy, verified

Introduction: QC adjustable decoy device

Schematic PCB

xkt-510 wireless charger

Introduction: XKT510 T3168 wireless charging

Schematic PCB