Open-Source Thermostat For $70
January 27th, 2014 | by Nicholas Brown
Spark has developed an open-source thermostat that cost just $70 to make, and it did so within a single day. [&hellip
January 27th, 2014 | by Nicholas Brown
Spark has developed an open-source thermostat that cost just $70 to make, and it did so within a single day. [&hellip