Easy to use, nice range (using antenna on both), you can send strings (text) from one point to another. If you want to automate your house without pulling cables then this device will help you well
It is a small digital power amplifier chip, high-definition sound quality highlights the advantages of digital chips
It is WTV020 chip plug-in SD card module, supports 32M ~ 1GBit capacity card;
MT8870 Voice decoding chip
With high quality, onboard 2W single channel power amplifier.
Main Chip:NE555; Operating voltage: 12V DC.
This MEGA Sensor Shield V2.0 dedicated sensor expansion board assembly market a variety of advantages in one of the expansion board design, PCB Immersion Gold processing technology.
Adopts Pam8610 chip, No filter, low static current, EMI, power consumption and heat generating
The sensor uses high quality FR-04 double-sided materials, large area of 5.0 * 4.0CM, and nickel-plated surface, with oxidation resistance, conductivity, and life expectancy superior performance
This is a commonly used DC motor drive module, using a small current 293 chip DC motor driver chip.
AM2302 digital temperature and humidity sensor is a calibrated digital signal output temperature and humidity composite sensor. It uses a dedicated digital module acquisition technology and temperatur
Each road stepper motors only need two IO ports
