StepMash is an opensource Arduino-based controller that allows you to manage a 5 steps mashing process.
StepMash features: -) From 1 to 5 temperature steps (1 sec to 99 min); -) NTC temperature sensor; -) Timeout temperature control; -) Gas valve and piezo ingniter control relays; -) 1 free relay output;
PCB is wire-wrapped.
StepMash is a prototype, I will test it soon. This is my first post, sorry for hand-drawn schematics (so '80s...). Suggestions and questions are welcome.