Pdlewis
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| posted on 7/3/13 at 09:05 AM |
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Open source android dashboard
Morning,
With the huge reduction in the price of 7" tablets i have been wondering about creating a second dashboard with one. I wondered if anyone knew
of any existing projects out there before I look at doing a scratch build because there is a lot of work to build an interface for the sender signals
and the software side of it
Build Photo Album
Updated 05/02/2009
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40inches
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| posted on 7/3/13 at 09:53 AM |
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Some discussion here.
Most I have seen use the CanBus/OBD2 for the interface, not what you need I think?
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Slimy38
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| posted on 7/3/13 at 09:58 AM |
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If you want to hook up to senders etc, I would probably suggest getting an Arduino dev board and the Amarino Android kit.
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designer
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| posted on 7/3/13 at 10:15 AM |
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I've seen this done on a home built plane in California. It had a two switchable displays, one for the engine/flight monitoring and a second for
navigation.
It was a good piece of kit but, when I asked how it worked it all came across as gobble-de-guke. It's probably simple, but beyond me.
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ashg
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| posted on 7/3/13 at 10:26 AM |
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If you have a megasquirt ecu it already exists in several flavours
Anything With Tits or Wheels Will cost you MONEY!!
Haynes Roadster (Finished)
Exocet (Finished & Sold)
New Project (Started)
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Pdlewis
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| posted on 7/3/13 at 10:35 AM |
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unfortunately Im using the stock r1 engine management.
When i first thought of it i looked at the Amarino Android kit looks very nice and might be the best way to go. I have left this to the wrong time of
year, I should really have looked at it when the nights were dark and cold 
Build Photo Album
Updated 05/02/2009
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scudderfish
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| posted on 7/3/13 at 10:43 AM |
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This may cut down on the interfacing work for you
https://www.sparkfun.com/products/10748?
Steer clear of any thought of using Bluetooth, go for a USB based interface as it has much better latency characteristics and throughput.
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matt_gsxr
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| posted on 7/3/13 at 11:13 AM |
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If you do this with Arduino then go for the mega board because it has more inputs (hence more flexibility).
I'd worry a bit about how to deal with rev counter and speedo (fast triggers) owing to the way that the programming works (it is all sequential
stuff). I had a speedo working fine, but not sure what would happen if a speedo trigger coincided with a tacho pulse.
The ADC's on Arduino are not that fast either.
But cheap and easy to play with.
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Slimy38
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| posted on 7/3/13 at 11:52 AM |
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quote:
Originally posted by matt_gsxr
If you do this with Arduino then go for the mega board because it has more inputs (hence more flexibility).
I'd worry a bit about how to deal with rev counter and speedo (fast triggers) owing to the way that the programming works (it is all sequential
stuff). I had a speedo working fine, but not sure what would happen if a speedo trigger coincided with a tacho pulse.
The ADC's on Arduino are not that fast either.
But cheap and easy to play with.
Those ADC's are plenty fast enough, they can deal with kilohertz sampling rates. I've seen them working with video capture (albeit fairly
blocky black and white images).
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scudderfish
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| posted on 7/3/13 at 01:30 PM |
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quote:
Originally posted by matt_gsxr
If you do this with Arduino then go for the mega board because it has more inputs (hence more flexibility).
I'd worry a bit about how to deal with rev counter and speedo (fast triggers) owing to the way that the programming works (it is all sequential
stuff). I had a speedo working fine, but not sure what would happen if a speedo trigger coincided with a tacho pulse.
The ADC's on Arduino are not that fast either.
But cheap and easy to play with.
The display will have some damping applied to it, otherwise it would change too fast to read. If done correctly it should be tolerant of a missed
read or two.
Think of it this way, MSDroid, TunerStudio etc do a good simulation of a dashboard with an update rate no better than 25Hz. If your primary consumer
is a pair of eyes (rather than a log file), this is fine even if you've potentially missed hundreds of potential reads in between.
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