Looking at the spec page for this Grove - 4-Channel SPDT Relay( <LINK_TEXT text=“https://www.seeedstudio.com/Grove-4-Cha … -3119.html”>https://www.seeedstudio.com/Grove-4-Channel-SPDT-Relay-p-3119.html</LINK_TEXT> ) and I want to be sure…
Looks like the Grove connector VCC should be 5v but the i2c levels are 3.3v.
That is fine for me because I am using a arduino flavor that is based on 3.3 but I also have 5v handy.
Hi,
The supply voltage is 5v and the I2C SDA and SCL are 3.3v, but since we used a level shifter it’s not a problem it can handle 5v on the grove I2C Port.
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Can handle 5v or Should be 5v?
My arduino is a 3.3 device so if it wants 3.3 than I am golden and can grab a 5v drop for the Vcc input.
If I ‘need’ the i2c to ve 5v then I need to level shift them up to 5v.
It can handle both 5v and 3.3v no need an extra voltage divider in the I2C channel.