Edge Collective

Upgrades after lightning strike

Taking the opportunity to simplify the overall circuit.

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Circuitpython code for identifying possible uart pin pair combinations: https://learn.adafruit.com/adafruit-itsybitsy-nrf52840-express/circuitpython-uart-serial

IB NRF

Looks like any pin combinations work

IB M4

RX pin: board.A3 TX pin: board.A2 RX pin: board.D4 TX pin: board.A2 RX pin: board.D5 TX pin: board.A2 RX pin: board.SDA TX pin: board.A2 RX pin: board.A1 TX pin: board.A4 RX pin: board.A5 TX pin: board.A4 RX pin: board.D2 TX pin: board.A4 RX pin: board.D0 TX pin: board.D1 RX pin: board.D10 TX pin: board.D1 RX pin: board.D11 TX pin: board.D1 RX pin: board.D12 TX pin: board.D1 RX pin: board.D9 TX pin: board.D1 RX pin: board.D10 TX pin: board.D12 RX pin: board.D11 TX pin: board.D12 RX pin: board.LED TX pin: board.D12 RX pin: board.D3 TX pin: board.D12 RX pin: board.APA102_MOSI TX pin: board.D12 RX pin: board.D0 TX pin: board.LED RX pin: board.D10 TX pin: board.LED RX pin: board.D11 TX pin: board.LED RX pin: board.D12 TX pin: board.LED RX pin: board.D9 TX pin: board.LED RX pin: board.D10 TX pin: board.APA102_SCK RX pin: board.D11 TX pin: board.APA102_SCK RX pin: board.LED TX pin: board.APA102_SCK RX pin: board.D3 TX pin: board.APA102_SCK RX pin: board.APA102_MOSI TX pin: board.APA102_SCK RX pin: board.A3 TX pin: board.SCL RX pin: board.D4 TX pin: board.SCL RX pin: board.D5 TX pin: board.SCL RX pin: board.SDA TX pin: board.SCL RX pin: board.D4 TX pin: board.SDA RX pin: board.D5 TX pin: board.SDA RX pin: board.SCL TX pin: board.SDA

IB KB RP2040

RX pin: board.A3 TX pin: board.A2 RX pin: board.RX TX pin: board.A2 RX pin: board.SCL TX pin: board.A2 RX pin: board.A3 TX pin: board.TX RX pin: board.RX TX pin: board.TX RX pin: board.SCL TX pin: board.TX RX pin: board.A3 TX pin: board.SDA RX pin: board.RX TX pin: board.SDA RX pin: board.SCL TX pin: board.SDA RX pin: board.D5 TX pin: board.D4 RX pin: board.D9 TX pin: board.D4 RX pin: board.D5 TX pin: board.D8 RX pin: board.D9 TX pin: board.D8 RX pin: board.D5 TX pin: board.MISO RX pin: board.D9 TX pin: board.MISO

NOTE: the depth sensor should receive on the 'created' UART -- only need to coordinate the RX pin -- while the satellite modem should have the 'true' board UART as defined.

Mon Nov 18 12:10:48 PM EST 2024

Update: ver 0.4 board seems to work well ...

There are periodic errors on the depth sensor -- reading an 'error' -- when sending via satellite on battery (ie waking up periodically). Haven't been able to reproduce when plugged in. Going to try to insert a delay after starting up uart on depth sensor in case that's the issue. In parallel might try to design version of board that has an extra linear regulator for 3V line in case insufficient current on startup is an issue.

Mon Nov 18 06:40:46 PM EST 2024

Testing new uart code. Another source of 'error' might've been the code for reading from the uart -- I think the earlier version wouldn't immediately return the depth once a reasonable depth was reported

Q: if we do get any 999 values, i wonder if we can re-query?

Tue Nov 19 12:17:18 PM EST 2024

Looks like things are pretty solid ... using 'second_test.py' in sweet-p firmware version 4a