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AndersG

NMEALog - A small, intelligent datalogger for NMEA-data

Status: Proposal
3987
46
votes
March 16, 2016 , Latest update: March 16, 2016
chart-20160316074344.png
NMEALog accepts data from up to two instruments natively, or several via a mux and logs data based on settable criteria, such as delta position, delta depth, delta time. Data is logged onto an SD-card and one card can hold several months worth of data.

The project image shows an existing chart with added depth data (darker blue)

Specifications:
  • Two input channels, optically isolated
  • On-board capacitor backup that flushes and closes files on power loss
  • Two analog input channels
  • Optional 16x2 character display
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Images
Prototype on breadboard
Schematics

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