Status Boards

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Status Boards
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Primary Contact Michael Erskine
Created 11/03/2016
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QR code

Simple means of showing status of Hackspace stuff on web and physical boards.

The driving of the 16 LEDs poses an interesting problem due to the limited number of digital outputs on the NodeMCU: we are looking for a simple low-cost solution so after looking at various ICs to perform the task I decided to throw in another inexpensive micro with plenty of I/O and control it with I2C, serial or similar.

Using a cheap ProMicro for I/O

The NodeMCU can tell the ProMicro what outputs to drive with a simple serial protocol: -