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Video

To test the SAM15x15 board automatically, I made the tool described here. As you can see, the mechanical construction is very simple.

Simple test fixture for PCB probe testing and programming
Simple test fixture for PCB probe testing and programming

Test jig for PCB probe testing
Test jig for PCB probe testing
Pogo pin test fixture for PCB probe testing
Pogo pin test fixture for PCB probe testing


There are two identical test PCBs used, with 1.05mm holes for the spring-loaded test probes. With the test program, the SAMD21 can test itself for short-circuits between pins and open solder connections.

Circuit

The pins are made low one by one, so that the LEDs lights up. By measuring the LED current with R35 and the ADC on pin1, it is possible to determine whether the SAMD21 pins are working correctly and if there are short circuits or open connections.

SAM15x15 test fixture circuit
SAM15x15 test fixture circuit

Software

See the software on GitHub.

 

Do you have any comments? Please let me know.
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