Over at Karosium there is a DIY DS1821 based Thermostat project. The code is available and I am assuming if there are some requests that the schematic will also be posted. “After configuration for thermostat mode the center (1Wire DQ) pin becomes a thermostat output pin.
Have you an opinion, used or been to this object or place? Tell us what you like don't like about it, or post any specs/info about it:
