Grove 4 channel SPDT relay control using Jetson Devices (I2C)

This repository helps us to control Grove 4 channel SPDT relay unit using Jetson devices via I2C protocol.

Get started

1. Connect VCC, GND from the I2C to the any of the VCC, GND pins in your Jetson device

2. Connect SDA to PIN3 and SCL to PIN5, this would now be bus 8 of your Jetson device

3. Run i2cdetect -y -r 8 to scan devices in bus 8, my case i got the below output

   0 1 2 3 4 5 6 7 8 9 a b c d e f
   00: -- -- -- -- -- -- -- -- -- -- -- -- --
   10: -- 11 -- -- -- -- -- -- -- -- -- -- -- -- -- --
   20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
   30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
   40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
   50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
   60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
   70: -- -- -- -- -- -- -- --

   11 (0x11) is the address of the device, usually Grove SPDT devices are at 0x11 or 0x12, find more details here

4. From github repo for grove-ardiuno i found that the address to for controlling relays is 0x10

5. Run "i2cset -y 8 0x11 0x10 1" in your cmd to activate the first relay.

A brief walkthrough on how to activate relays

writing 1 (0001) to 0x10 would switch on the first relay
writing 2 (0010) to 0x10 would switch on the second relay
writing 3 (0011) to 0x10 would switch on the first & second relays
writing 4 (0100) to 0x10 would switch on the 3rd relay
and so on