MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.

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Couple things to check. After uploading the RX code to the ATTiny85 board, does the light on the board come on when powered by the coil or by usb power? Does the light on the board turn on when you put a magnet next to the reed switch?