Raspberry Pi Wine Fermentation Temperature Controller

RE: Raspberry Pi Wine Fermentation Temperature Controller

peterjcs23 — Mon, 02 Mar 2015 13:34:26 GMT

[mention:22dff3233ba3429e9142063af3fd56a0:e9ed411860ed4f2ba0265705b8793d05]

I'm just trying out the mention function, is that you shaun?

RE: Raspberry Pi Wine Fermentation Temperature Controller

peterjcs23 — Mon, 02 Mar 2015 13:33:10 GMT

Hi Shaun, I read your blog to find out a bit about Raspberry pi and ended up asking about the relay.

The software is python I believe. I've used C quite a bit for embedded processors but never python. Is there a book you would recommend or a web tutorial? Is there a standard to python or is raspberry Pi a unique version. With C you get a core standard and each implementation has a set of functions.

Peter

RE: Raspberry Pi Wine Fermentation Temperature Controller

DAB — Sun, 01 Mar 2015 19:44:46 GMT

Good post,

Simple, strait forward and easy to implement.

I do worry about your relay handling the current of the heater though, but hopefully you made sure it was rated for the current.

DAB

RE: Raspberry Pi Wine Fermentation Temperature Controller

peterjcs23 — Sun, 01 Mar 2015 12:50:39 GMT

Hi Shaun, you say...

"Then wire up the relay to the Raspberry Pi. There should be three wires: +5V, ground, and a data wire. The data wire tells the relay when to turn on/off. I connected my data wire to GPIO pin 11."

That makes me a bit nervous. Does your relay have a data input that drives the relay coil? Most relays only have a coil input and you have to wire up a fly-back diode, a coil driver, and a data interface.

Peter