In stock on august 19 2020.
Arduino solid state relay board.
Between the dht22 vcc and data pin insert a 10k pull up resistor.
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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.
Ground the gnd pin of dht22.
Some 3 3v boards like linkit one will only supply 3ma from a digital output.
For ssr solid state relay i used the digital pin 7.
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.
Led indicator for each relay.
The solid state relay can be controlled with 3v so is suitable for the 3 3v arduino boards.
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.
8 channel 5v solid state relay module board omron ssr 4 pic arm avr dsp arduino specification this item has been assembled and electrical test passed.
Sainsmart 8 channel 5v solid state relay module board for arduino uno duemilanove mega2560 mega1280 arm dsp pic 4 4 out of 5 stars 125.
Some 3 3v boards like linkit one will only supply 3ma from a digital output.
Project circuit is simple connect the dht22 digital pin with the digital pin 2 of arduino.
Iwiss sn 28b crimping tool for awg28 18 dupont pins 4 6 out of 5 stars 846.
Relay spdt sealed.
I powered the dht22 with the arduino 5 volt output.
Colored wire 16 18 gauge.
The solid state relay can be controlled with 3v so is suitable for the 3 3v arduino boards.