This system was designed by a group effort of Homeroasters. It uses a customized Arduino and a custom "Juice box"(to measure voltage off the variac). It monitors Time, ET(environmental temperature in the roaster), BT(surface bean temperature), RoR(rate of BT rise/min.) and Juice(voltage from the variac to the main heating element). It uses the custom designed pGesha software program. Here is a link to the hardware and software, tc4
I can hook up to a computer through USB or view on the LCD display.
I'm about to mount the monitoring hardware in a project box.
This was a roast of Ethiopian with an extended
finish for espresso.
9 comments:
Hi Ed,
Your setup looks great! I am trying to get aGesha running on my roaster.
I sent you a PM on Homeroasters but I am not sure it is working correctly. I also sent a response to your PM there.
Sorry to bother you,
Jack
Ed, did you find a project box for the TC4/LCD? It would be nice to have it all in one unit.
Jack
Great to hear you have aGesha up and running.
I'm using .5" maple wood for the box and a front and rear panel of aluminum for mine. Just got it partly started. They make various project boxes that you can buy. I just haven't looked online for them. A basic metal canister/box with lid could work too. Many DIY options.
Ed
Your blog is really amazing with all the bits and pieces of information I can share with my friends and followers. Thanks and more power!
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