Editing PG31 GPS USB Dev Board
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===Battery Backup=== | ===Battery Backup=== | ||
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If you're playing with GPS, you've ''got to have a battery backup''. The 12mm coin cell lithium allows the PG31 (and many other GPS receivers) to retain the alamanac data. This small battery provides just enough juice for 3-5 years. By having alamanac data at power on, the GPS receiver will be able to do a warm lock instead of a cold lock. Cold locks take 1-2 minutes, warm locks, as little as 30 seconds. The alamanac data, in effect, allows the GPS receiver to 'guess' where it is in the world ("Last time I was on I was in Ohio, therefor, I will assume I'm near there"). | If you're playing with GPS, you've ''got to have a battery backup''. The 12mm coin cell lithium allows the PG31 (and many other GPS receivers) to retain the alamanac data. This small battery provides just enough juice for 3-5 years. By having alamanac data at power on, the GPS receiver will be able to do a warm lock instead of a cold lock. Cold locks take 1-2 minutes, warm locks, as little as 30 seconds. The alamanac data, in effect, allows the GPS receiver to 'guess' where it is in the world ("Last time I was on I was in Ohio, therefor, I will assume I'm near there"). | ||
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===PG31 Footprint=== | ===PG31 Footprint=== | ||
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We may consider migrating to a different USB IC someday but the CP2102 continues to be a really simple to use USB to UART IC. | We may consider migrating to a different USB IC someday but the CP2102 continues to be a really simple to use USB to UART IC. | ||
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− | ==Documents== | + | ===Documents=== |
[[Media:PG31 USB Schematic.pdf|PG31 USB Schematic]] | [[Media:PG31 USB Schematic.pdf|PG31 USB Schematic]] | ||
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FP Name: PG31 | FP Name: PG31 | ||
− | <b>Supplier Info:</b> | + | <b>Supplier Info:</b><br> |
Spark Fun Electronics part # : Eval-PG31-USB<br> | Spark Fun Electronics part # : Eval-PG31-USB<br> | ||
Single Piece Price : $29.95 | Single Piece Price : $29.95 | ||
− | <b>Related Items:</b> | + | <b>Related Items:</b><br> |
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