The Making of the Library Occupancy Estimation System, Part 5 – the Enclosure

It’s almost time to deploy the ESP8266s. I switched from the previous board to wemos mini lite, a smaller board with a variant of ESP8266 (ESP8285). The ESP8285 includes a on-chip 1M EEPROM, reducing the cost. The most important difference is that the newer boards don’t have pre-soldered pin headers. Desoldering pins from the previous board is proven to be tedious and time-consuming.

While waiting for the boards being shipped from China to me, I designed a enclosure for that board. I can, of course, just stick the boards to walls. But a case is always nice – it makes the project look less cheap (while it actually is pretty cheap).

The design is consisted of 2 parts: the body and the cap. The body is going to be 3D printed while the cap is going to be cut from clear acrylic panel. 4 M1.5 screws hold the components together.

The parts are modeled with Autodesk Fusion 360…

and then made…

and compared to my sketch…

By Yifan Gu

aka. Frank, aka. 顾屹凡

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