Quantity   Component name
1 × Adafruit HUZZAH32 - ESP32 Feather Main processor board. Provides basic processing, plus BLE and Wi-Fi.
1 × Adafruit FeatherWing OLED - 128x32 OLED Add-on For Feather Display to show temperature
1 × CR1220 12mm coin cell Lithium Ion battery for the RTC
1 × Adafruit FeatherWing Proto For attaching the sensor(s)
1 × 3-pin female right-angle header For plugging in the pulse sensor (below)
1 × TMP36 - Analog Temperature sensor IC to be mounted on the Proto. Detects ambient temperature (may be required)
1 × Pulse Sensor Amped Pulse sensor (repotedly can also detect temperature, with a software fix)
1 × Lithium Ion Polymer Battery Ideal For Feathers - 3.7V 400mAh
1 × Picoblade connector 2-pin right-angle connector; to connect the reset button to the board
1 × Button momentary-contact push button (precise model TBD)
1 × DS3231 Precision RTC FeatherWing Real-time clock