8 space relay board we use a silent 24 solid state relay but if a bit of clicking doesn t bother you a 10 non solid state relay works too.
Arduino solid state relay board.
Colored wire 16 18 gauge.
I powered the dht22 with the arduino 5 volt output.
However it takes about 12ma to switch the solid state relay so do check that your board can supply that amount of current from a digital output.
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The solid state relay can be controlled with 3v so is suitable for the 3 3v arduino boards.
Relay spdt sealed.
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For ssr solid state relay i used the digital pin 7.
Kta 223 usb rs485 relay io board dev 09526 144 95.
However it takes about 12ma to switch the solid state relay so do check that your board can supply that amount of current from a digital output.
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Led indicator for each relay.
Sparkfun qwiic quad solid state relay kit.
Ground the gnd pin of dht22.
The solid state relay can be controlled with 3v so is suitable for the 3 3v arduino boards.
Project circuit is simple connect the dht22 digital pin with the digital pin 2 of arduino.
Between the dht22 vcc and data pin insert a 10k pull up resistor.
Some 3 3v boards like linkit one will only supply 3ma from a digital output.
Crimp on fork terminals 16 18 gauge.