A quad-386 coffee heater

The goal of this project is to build a coffee (tea perhaps in V2) cup warmer (“coffee heater”) using four CPUs for producing the heat. In the pictured prototype the used CPUs are variations of the good old 386. The heat production is controlled by changing the duty cycle of reset assertion. In addition the built-in self test is used to make the CPU being active. The temperature is monitored via four DS18B20 sensors and sent via an AVR using V-USB to the PC, where a python-ncurses tool is used to display it (see screenshot using “Cathode” on OS X).

• note 1
• note 2

Liste de fournitures

• 4 x 386

• Le projet sur HaD: http://hackaday.io/project/2621-quad-386-coffee-heater