I had open sourced an 87 before, but it couldn't be used in actual testing. This time I redesigned it, made some improvements, and the prototype has been tested successfully!
The configuration is as follows:
The actual test went well!
2021.2.8 update: Fixed ISP download pilot error
The duck after welding:
Lighting effect diagram:
The lighting effect demonstration video is in the attachment below
I have attached the specific production instructions, production files and 3D files in the attachment below.
Note about the casing: The small square hole opened on the bottom layer is a bit upward and may conflict with the reset button on the PCB. It is recommended to grind it down about 3 mm.
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