Jonas_Jones/PI-server-rack
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@ -50,6 +50,9 @@ This setup includes a custom designed and built circuit board that manages the c
- **- 2**: Ground for `5V Out` on Master PI
- **\~ 1**: Modulation Pin for large cooling fan. Connected to `GPIO_24` on Master PI
- **\~ 2**: Modulation Pin for small cooling fan. Connected to `GPIO_25` on Master PI
- **XOR 1**: XOR-Gate 1. Determines Master PI status
- **XOR 2**: XOR-Gate 2. Determines slave PI status
- **TR1**, **TR2**, **TR3**: NPN Transistors
# In-more-depth explanation