@@ -11,7 +11,7 @@ Our reconstruction of the card10 badge consists of three things:
- The [Harmonic Board](#harmonic-board)
- Hosts the user interface, a few sensors, lots of (RGB) LEDs and the battery
The two boards are connected via a boad to board connector and then screwed together with M2 screws. The wristband is attached to back of the Fundamental Board with two clamps.
The two boards are connected via a board to board connector and then screwed together with M2 screws. The wristband is attached to back of the Fundamental Board with two clamps.

...
...
@@ -21,7 +21,7 @@ The two boards are connected via a boad to board connector and then screwed toge
| | |
| -------------------- |-------------|
| Weight | ~ 19 g |
| Size | Height (without wirstband): ~8-9 mm. Width: 38 mm. Length: 45 mm |
| Size | Height (without wristband): ~8-9 mm. Width: 38 mm. Length: 45 mm |
| Environmental sensor | BME680 (temeperature, rel. humidity, air pressure, air quality) |
| Environmental sensor | BME680 (temperature, rel. humidity, air pressure, air quality) |
| ECG | MAX30001 |
| Pulse sensor | MAX86150 (with second ECG channel) |
| Ambient light sensor | 940 nm IR LED attached to ADC |
...
...
@@ -44,7 +44,7 @@ More information to come.
## Fundamental Board
The Fundamental Board is located just above the wristband; above it come the battery, the Harmonic Board, and the display. The Harmonic Board is connected to the Fundamental Board via a board to board connector.
The Fundamental Board is located just above the wristband; above it comes the battery, the Harmonic Board, and the display. The Harmonic Board is connected to the Fundamental Board via a board to board connector.
Several interfaces for [interhacktions](/en/interhacktions) are included on the Fundamental Board. The travelers can be alerted to an event using the vibration motor. Screws through the ECG contacts are used both for attaching the wristband and for making contact with your skin for ECG measurements. Besides its use for interhacktions, the [USB-C](/en/usbc) connector is also used for charging the battery and for updating the firmware.