when checking the bottom of the board i noticed the following:
DC-Jack is for orientation. In the green box there is a AS393M-G1 voltage comparator.
Here is the datasheet: https://www.alldatasheet.com/datashe...AS393M-G1.html
According to the datasheet, the most left bottom pin/leg is for GND, where the most right top pin/leg is for VCC. When measuring against GND (from metal cover of the usb port for example) i get continuity on both of them. But i think it only should be on the GND pin of course....
Leave a comment: