PCB v2.0

[gauteh]

• Notecarrier A
• Magnetometer: LIS3MDL or combined ISM330DHCX + LIS3MDL (https://www.adafruit.com/product/4569)
• External GPS: https://www.sparkfun.com/products/18037

It seems that the combined ISM330DHCX+LIS3MDL is the most available and compact one. Maybe we should aim for that one first (replacing the ISM330DHCX, and adding LIS3MDL).

• Create or find symbols for components above
• Create or find footprints for components above
• Wire new schematic:
  • LIS3MDL and ISM330DHCX can be on same I2C bus
  • GPS can be on same I2C bus as Notecard
• Onboard-antennas + GND-plane on Notecarrier should not be covered.

@zerblatt007 , @askbreivik

[gauteh]

• https://github.com/gauteh/sfy/issues/15

LIS3MDL can act as external sensor to ISM330DHCX, which will probably be necessary to get sampling right and put the LIS3MDL readings into the ISM330DHCX FIFO.

[gauteh]

First revision ready, all seems to work, but a few things to fix in next iteration:

• [x] swap direction on sd-card
• [x] replace temp-sensor with uart pins+add resistor
• [x] add output for pt1000 and chip-select pins
• [x] add on-off button?
• [x] maybe add DS248-100 for 1-wire

[gauteh]

[gauteh]

Next iteration in progress, board is slightly too big for bottle, but possible to force down. For next version:

• [ ] Reduce board size