Anyway, productive day of messing with this LoRa-GPS tracker design. Added some TVS diodes and fuses just to make damn sure that any issues cause the tracker to not fry the $10 LoRa module or the $15 GPS module. I think the last piece of the puzzle is the automatic power switch which will switch the battery off when the external UART/debug connector is plugged in.
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And… I think that’s it? TPS2116 is interesting - 2 input power rails, 1 output, and the chip controls which input rail is connected to the output either by a voltage divider set-point, or directly toggling GPIOs
Now going through the dick-dragging exercise of putting LCSC part numbers against all the components on the PCB. The two tuning capacitors for the antenna are completely unavailable.
@jpm it gives me such a thrill to design a board and have it appear as a complete physical artefact a week later. My love for data entry has me grabbing the soldering iron, though. Your mastery of masochistic tendencies has my respect.
@ozeng I am very seriously considering buying a desktop PNP machine, because my hands are usually too shaky for 0402 size components
And the two connectors are also unavailable, but that’s ok’ish because I designed the PCB to make them optional if the board is broken in hand and stacked
