General GPS project notes

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Garmin

Trimble

Lassen

Lassen SQ

Power supply

High efficiency switching voltage regulators National LM2597 3.3 and 5.0 "Simple Switcher" 8-DIP $3.78 Digikey

Requires 1N5817 Schottky diode and 100 uH inductor (M9799-ND) and the usual handful of caps.


Backup / standby power Button cell batteries - CR2032

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