Alex-
Someone asked for some IR pictures....
07/28/2019 at 01:42 • 0 commentsYou may already saw them on Twitter. Thanks to fablab Munich I could take some IR pictures of a running matrix.
Front at 15% brightness white:
Back at 15% brightness white:
Front at full brightness after ca. 5 sec. running... Than I unpluged it.
So it should not run a full brightness for a long time. I am thinking to use the SAMD21'S integrated Temperature Sensor to limit the Brightness to Maximum Board (/MCU) temperature - maybe to 70-80°C.
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Test/programming Jig
07/10/2019 at 21:34 • 0 commentsThis small programming Jig was quite handy today
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I marked the positions of the Test pins in new Layer in eagle. Than I exported this Layer and the Outline as dxf. With this dxf and some work in Fusion i ended up with this small jig. Due to it small size (~3x3cm) it also prints in ~1/2hr. After redrilling the holes the test pins can be pushed in the plastic.
Best part: it worked: And I now have the Trinket-M0-USB-Bootloader on the board. And now I can program it via USB! Pictures of working board will follow tomorrow.
Here is a picture of the whole setup needed to burn the bootloader. Beside the JIG some power source and a Programmer. I used the Atmel ICE.
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192:LED redesign
Ultra tiny (15.8mm x 14.8mm) smart USB RGB LED display/matrix
Back at 
Front at 
So it should not run a full brightness for a long time. I am thinking to use the SAMD21'S integrated Temperature Sensor to limit the Brightness to Maximum Board (/MCU) temperature - maybe to 70-80°C. 
