Update PCB Design

The PCB has the same footprint and roughly the same layout. The changes that were made were:

• Add a TPM for storing secrets and doing encryption
• Fixed the routing for the SGP40-2.K module

V4 PCB Release

The PCB is designed to be a drop in replacement replacement for the controller in the Vindriktning air quality monitor.

Sensors:

• PM1006 (Comes with the Vindriktning)
• BME280
• SGP40-2.5k

Attached are the gerbers, bom and images of the PCB.

2.0.0

PCB:

• Order with JLCPCB's two layer stackup.
• Features an ESP8266 module with a BME280, and CCS811 sensor.
• Module is programmed over the USB via the USB/UART convertor on board.

Cloud:

• Requires a gcloud account with google IOT core.
• Setup can be found in: /server