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reverse_engineer_seco_com [2019/06/01 23:20]
zwmm
reverse_engineer_seco_com [2019/06/03 23:39] (current)
zwmm
Line 1: Line 1:
-Power appears ​to come in through ​P1. The round hole closest to the coin cell holder is Ground. ​+Documenting an attempt ​to make the Sky Squirrel Q7 carrier boards usable. 
 + 
 +U22, the small chip next to inductors L30 and L31 is an ST [[https://​www.st.com/​en/​power-management/​st2s08b.html | 2S08B buck regulator]]. Pin 1 of U22 is next to R3. It's marked with a small white dot. 
 + 
 +Connector ​P1 is a likely power connector. The round hole closest to the coin cell holder is Ground. ​The hole with the square via is one of the voltage //outputs// from U22. 
 + 
 +Input power for U22 is on pin 11. It's on the same circuit (VCC?) as one of the pins of U9, which I have not identified yet. The big inductor L32 is also connected to pin 11. So are the left-most outer pins of J3, J2, J4 and J7. 
 + 
 +Power might come in through J8?
  
-U22, the small chip next to inductors L30 and L31 is an ST [[https://​www.st.com/​en/​power-management/​st2s08b.html | 2S08B buck regulator]]. ​ 
  
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reverse_engineer_seco_com.txt · Last modified: 2019/06/03 23:39 by zwmm