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and DIY motion-sensing technology projects
3 in 1 Raspberry Pi Aluminium Heat Sink
It is important that the microcontroller share ground with the relay board along with other control signals else it will not able to control the relay
Each bridge is driven by means of four gates the input of which are In1
4GHz Transmitter & Receiver
DHT22 Humidity and Temperature Sensor Module (AM2302) Boards Beagle Bone and DIY motion-sensing technology projectsDHT22 Humidity and Temperature Sensor The DHT22 Sensor Module is a basic, low cost digital temperature and humidity sensor. It uses a capacitive humidity sensor and a thermistor to measure the surrounding air and spits out a digital signal on the data pin (no analog input pins are needed). It's fairly simple to use but requires careful timing to grab data. The only real downside of this sensor is you can only get new data from it once every 2 seconds,