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Arduino / Raspberry Pi based instrumentation?

15911 Views 34 Replies 14 Participants Last post by  BryceGTX
Hi all,

So I recently ordered a Raspberry Pi and more associated small equipment to make myself a NMEA wireless bridge/repeater. The plan is to (based on a recent Panbo article) utilize a Win8.1 cheapo tablet to run OpenCPN. I've already run the instrumentation and had it all working on my laptop at the helm, and even had OpenCPN acting as a TCP this is no challenge.

*HOWEVER*, this project got me thinking. My Yanmar 3ym30 has only the idiot lights for water temperature, voltage, and oil pressure. At various stages, I've thought about upgrading the Yanmar Panel ($1000+ all in), buying the Maretron N2k instrument andharness ($700 all in), and the cheapest option, splicing in to the existing wiring and putting in analogy instrument gauges.

Then, I thought, hey, I have the raspberry pi. Why not use an arduino board to tap this data this way!?

The trouble is, I'm not very well versed with arduino and instrumentation. However, if I'm willing and able to fund the hardware purchase(s), is there anyone that can guide me through the project? The best thread I've got is this as a reference: Boat Digital Guage Project - Arduino Forum

I figure I'd start with a simple here goes:

Q1 - can someone tap into existing idiot light gauges (at the sender or at the panel) in order to splice the data? How does one interpret the values being returned by the sender gauges (assuming they return various voltages or resistances back to the idiot lights helmide).
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To the OP -
Am considering this same project to write NMEA 2k sentences to garmin 740 at the helm - ancient Volvo MD7A and new gauges (analog) - I designed the panel to stub out for this eventual project, so I have the data readily available for collecting - interested to know which Arduino board you chose and why as well as any sketches you can share - PM me if you can...

1 - 1 of 35 Posts
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