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Homeroasters - Home Roasting Coffee Community » ALL ABOUT ROASTERS » Fresh Roast 8 and NEW SR 500

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SR800/SR540 Fan Current TC4+
renatoa	#81 Posted on 02/07/2023 12:54 AM
Administrator Posts: 2599 Joined: September 30, 2016	It is more than fast enough. Such things are done with Arduino Uno for more than 10 years (see TC4 project), and Uno is 10x less capable than an ESP32. Just a thing to be aware, if using WiFi some timers and ADC logic are disturbed, so better use BT (BLE) for wireless comm, if you intend.


dwertz	#82 Posted on 02/21/2023 3:06 AM
Newbie Posts: 45 Joined: October 19, 2022	Roaster is working pretty well now. This roast was outside in a mild breeze and includes me reducing the fan from 60% to 35% in ~5% steps. I made a modification to the integral equation. I don't allow the integral to change if the error term is getting smaller. This prevents the integral from winding up when the error is large but headed in the right direction. The change got rid of the large overshoots. dwertz attached the following image: Edited by dwertz on 02/21/2023 3:12 AM

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