dave_424
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| posted on 28/3/13 at 06:47 PM |
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USB to serial adapter
Hi, has anyone got a USB to serial adapter that they know works with megasquirt that they will sell/lend me?
I'm pretty sure my £1 adapter isn't doing the job, however when I put the grounds and 12v power to a battery, I get just a short flash of
the LED's, not sure if this is a problem.
Dave
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lewis
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| posted on 28/3/13 at 07:02 PM |
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I also need one so if someone can recommend one that def works.
I am a driving god!..........sort of
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scudderfish
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| posted on 28/3/13 at 07:03 PM |
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Anything with the FTDI chipset should be good. Avoid anything that mentions Prolific.
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r1_pete
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| posted on 28/3/13 at 07:26 PM |
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I had a prolific which worked fine on XP & W7 with mjlj & squirt but not on Vista.
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austin man
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| posted on 28/3/13 at 08:52 PM |
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I found that you sometimes have to set the com port again when using one of these as most set a default as com pots one but when a usb adapter is
fitted the adapter appears to show as another port not com port one. I bought one from maplins and had to reset the com post each time to be
recognised within the tuning programme
Life is like a bowl of fruit, funny how all the weird looking ones are left alone
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wilkingj
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| posted on 28/3/13 at 10:25 PM |
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My Prolific one worked on on XP.
However the FTDI chipset is the one to go for if you can get one.
Prolific chipset ones can be difficult.
1. The point of a journey is not to arrive.
2. Never take life seriously. Nobody gets out alive anyway.
Best Regards
Geoff
http://www.v8viento.co.uk
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dave_424
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| posted on 28/3/13 at 10:55 PM |
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Thanks guys, my cheap cable is passing the loopback test when pins 2 and 3 are jumpered, also passes the loopback test when jumping pins 12 and 13 on
the board and doing the loopback test.
But adding a capital S, it should show ECU information but nothing shows. Tried loading the extra code and it can't find a port number.
Dave
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keybaud
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| posted on 28/3/13 at 11:58 PM |
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This one is very good.
Startech Serial RS232 Adapter
And why do all the posts look centre justified to me?
[Edited on 29/3/13 by keybaud]
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dave_424
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| posted on 29/3/13 at 01:04 AM |
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Thanks very much, saw this before when I was looking and looked about the best price for the one with the better chip, orderd 
I will let you all know how I fare.
Dave
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JAG
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| posted on 3/4/13 at 09:01 PM |
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What's wrong with this one for £14.50 from Trigger Wheels.com
I've got one and can confirm it has the FTDI chipset - although I've only just got it and can't confirm it works just yet.
Justin
Who is this super hero? Sarge? ...No.
Rosemary, the telephone operator? ...No.
Penry, the mild-mannered janitor? ...Could be!
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dave_424
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| posted on 3/4/13 at 09:52 PM |
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Didn't see that one there, the one I said I ordered came today, very nice with a long cable, installed the CD and got the COM port working.
I initially thought there was a connection problem because there was a firmware issue when I tried to use it in tunerstudio, wasn't sure if this
was firmware on the ECU or firmware/drivers for the cable.
Turned out that there was no code loaded onto the ECU, loaded on the latest version of the extra code and works perfectly.
Stuck a 24-2 trigger wheel from a kawasaki z1000 on my zx9 crank, wired up the crank sensor and got cranking RPM straight away, should have both
BIP373's soldered in by midday tomorrow and will go for a first start with the zx9 carbs and megasquirt running my wasted spark.
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rx7locost
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| posted on 4/4/13 at 05:30 PM |
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When you get tired of that cable getting in the way, you can go Bluetooth. I did this write up a couple years ago using a cheap 14 USD eBay adapter.
You'll find it about 1/2 way down the page. I'd still want the cable for any firmware upgrades.
CLICK HERE
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scudderfish
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| posted on 4/4/13 at 06:27 PM |
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Bluetooth is convenient, but for data logging it's no good compared to USB. I wrote MSLogger using BT, and I've recently added USB
capability to MSDroid (both Android apps for talking to MS). With BT the read rate would bounce between 7 and 12 reads per second. USB gives a solid
19. The latency between sending a read command over BT and getting the data back from the ECU is all over the place. I'm keeping my BT adapter
for testing purposes, but when my ECU goes back in the car, it's going to have a USB adapter plugged into it.
Regards,
Dave
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