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Replacement: None. We are no longer carrying this kit. This page is for reference only.
Description: This kit was designed specifically for a high altitude balloon (HAB) project, but has many other uses. It was designed as a heater system for the electronics enclosure but you can use it to control a relay for other heating systems or wherever you might want to precisely control a relay.
This comes as an unassembled kit. It includes a pre-programmed ATmega328 and everything else you will need.
You can find more discussion here.