image/svg+xml follower@rancidbacon.com Breadboard MCP23S08 TX 1 RX 0 2 3 4 6 5 7 9 8 (SS?) 10 (MOSI) 11 (MISO) 12 GND (SCK) 13 AREF Gnd Vin 5V 3V3 RESET Gnd 4 5 2 1 Analog In 0 3