Firmly press the connector into the holes and solder all pins. Add solder to the mechanical retaining hooks.
Attach color coded wires to the IO pads.
It is not necessary to push the wires into the holes and you can simply strip a short piece of insulation and solder the wires onto the pad.
Suggested connecctions for the Sparkfun Thing Plus (USB-C) and the Adafruit Feather ESP32-S3.
| PAD | Function | Thing Plus | Feather |
|---|---|---|---|
| VCC | Power | 3V3 | 3V3 |
| Start | Reset active low | 04 GPIO14 | 10 GPIO10 |
| RDY | ADC Data Ready | 12 GIPO12 | 13 GPIO13 |
| CS0 | Chip Select | 08 GPIO15 | 6 GPIO6 |
| MOSI* | Master Out Slave In | PICO GPIO23 | MO GPIO35 |
| MISO* | Master In Salve Out | POCI GPIO19 | MI GPIO37 |
| SCK | Serial Clokc | SCK GPIO18 | SCK GPIO36 |
| D ALM | Photo Diode Fault, Output | 06 GPIO32 | 12 GPIO12 |
| LED ALM | LED Cable Fault, Output | A0 GPIO26 | 9 GPIO9, A0 |
| DIAG_E | Diagnostics End, Output | 11 GPIO27 | 11 GPIO11 |
| PWDN | Power Down, active low | A1 GPIO25 | 5 GPIO5 |
| GND | Power | GND | GND |
Pin 10 is reserved for system button. Require connections are in bold.
*The SPO2 Aanalog Front End uses the old terminology MOSI and MISO while appropriate terminology is POCI and PICO for "peripheral out controller in" and "perpherial in controller out".
The button is configured to pull a pin high. One button pin is connected to 3.3V and the other to the input pin on the microcontroller. In software that pin is pulled low.
| PAD | Function | Thing Plus | Feather |
|---|---|---|---|
| 3.3V | Power | 3V3 | 3V3 |
| Button | Button | 9 or A0 | 12 |
