Node-Red and DAC

#1

I would like to control my water heater element with a power controller. The controller requires 0-5V DC to control the element output.

I was hoping to use a Click analog output module (ADAC Click) atop my raspberry Pi 3 but am struggling to work out how to control the output module.

Information provided is here: https://www.mikroe.com/adac-click-click

I am struggling to communicate with the ADAC click using the i2c input and output nodes.
I get the the address back when I use the i2c scan node.

The issue is interpreting the information relating to the AD5593R http://www.analog.com/media/en/technical-documentation/data-sheets/AD5593R.pdf

Thanks,
Murray

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#2

It looks to me like you would need to write your own low level library just to communicate with this thing.
I have had good success controlling high amperage loads with this IOT relay plug:
http://a.co/d/cyh5COk
Just a simple high and low will turn it on and off. For simple projects, I just use a normal relay board but for a high amp load like a heater, I want to be sure my hacked project does not burn down my house.

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#3

Google suggests that there is little support for this for the Pi, unless I missed it. You might be better to find a DAC that is well supported and use that.

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