General GPS project notes
Garmin
Trimble
Lassen
Lassen SQ
Serial TTY to RS232
Serial TTY to Bluetooth
Serial TTY to USB
PIC datalogger
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
Quantity Part Number Description Customer Reference Backorder Quantity Unit Price
USD Extended Price USD 1 4 H2053-ND CONN HEADER 10POS 2MM PCB TIN 0 0.76000 $3.04 2 10 P189-ND BATTERY LITHIUM COIN 3V 20MM 0 0.27000 $2.70 3 10 BA2032-ND HOLDER COIN CELL CR2032 EJECT 0 0.70000 $7.00 4 10 497-1442-5-ND IC POSITIVE REG 5V TO-220FP 0 0.64800 $6.48 5 10 CP-002AH-ND CONN PWR JACK 2.1X5.5MM HIGH CUR 0 0.36400 $3.64 6 10 CP-004A-ND CONN 2.1MM FEMALE PLUG 5.5MM OUT 0 0.55900 $5.59 7 4 AD22105AR-ND IC THERMOSTATIC SWITCH SS 8-SOIC 0 3.08000 $12.32 8 2 LM2597N-3.3-ND IC REG SIMPLE SWITCHER 8-DIP 0 3.78000 $7.56 9 2 LM2597N-5.0-ND IC REG SIMPLE SWITCHER 8-DIP 0 3.78000 $7.56 10 10 1N5817DICT-ND DIODE SCHOTTKY 20V 1A DO-41 0 0.30000 $3.00 11 2 P151-ND BATT 3V LITH CAMERA - BULK PKG 0 2.63000 $5.26
