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Re: DTA Dyno Box/Serial Cable -- Schematics and Pictures

Posted: Sun Jun 01, 2014 11:54 am
by stevieturbo
apow wrote:What would it cost to make this kind of box??

I am no good with electronics so is it something a newb could do?

Thx

Vas
Price of the parts is very little

If a newbie. Buy a 15 pin VGA extension cable.

Buy a 9 pin serial extension cable.

Cut the unused end off both, and use these to make all the connections inside the box itself. This is far easier than trying to solder onto the DB9 style connectors which are a nightmare due to their small size.

Re: DTA Dyno Box/Serial Cable -- Schematics and Pictures

Posted: Mon Jun 02, 2014 1:34 am
by Rob Stevens
If you buy a 15 way lead make sure it has all the pins wired, there are some out there that have a pin missing as its not used on monitors.

Re: DTA Dyno Box/Serial Cable -- Schematics and Pictures

Posted: Mon Jun 02, 2014 2:10 pm
by stevieturbo
Yup, hence an extension cable. It should have all pins connected.

Not always guaranteed, but it should.

Also, buy the thickest looking cable you can. Some of the wires inside really cheap ones are so thin they're a nightmare to work with

Re: DTA Dyno Box/Serial Cable -- Schematics and Pictures

Posted: Sat Jun 07, 2014 5:19 pm
by ERAYJ
I am trying to make one of these boxes, but I am unclear about which pin on the potentiometer pin 8 should be connected to.

All I can find regarding pots is the PIN numbers. None show clockwise or anti clockwise. Just 1,2 and 3

I know if I get it the wrong way round it will still work, just with the pots working the wrong way. ie turning clockwise will decrease instead of increase.

I have currently connected pin 1 on the pot to pin 8 of the 15 pin connector. This also connects as a common connection to all the buttons.
I hope that this makes sense.
Help would be appreciated.

Re: DTA Dyno Box -- Schematics and Pictures

Posted: Sat Jun 07, 2014 5:55 pm
by stevieturbo
stevieturbo wrote:A bigger, perhaps clearer image here

http://www.quantums.info/dtalead.htm

And not forgetting as per DTA's pinout schedule that flash programming switch goes between pin 8 and 13 of the 15pin connector.
Link above shows markings

Re: DTA Dyno Box/Serial Cable -- Schematics and Pictures

Posted: Sat Jun 07, 2014 5:56 pm
by stevieturbo
Image

Re: DTA Dyno Box/Serial Cable -- Schematics and Pictures

Posted: Sat Jun 07, 2014 6:16 pm
by ERAYJ
Thanks, I have seen this.
My confusion is which terminal on the pot to connect pin 8 to and which to connect pin 12 to. The diagram describes pin 1 and pin 3 on the pot as ACW or CW. My problem is getting these the right way round.

There are 3 pins on the pot with pin 2 being the middle one. This one I know goes to pin 6 for advance or pin 7 for fuelling. Depending on how I connect pins 1 and 3 on the pot will determine whether the pot increases fuelling / advance with a clockwise or anti clockwise turn.

Re: DTA Dyno Box/Serial Cable -- Schematics and Pictures

Posted: Sun Jun 08, 2014 3:23 am
by ignitionautosport
To be fair, its not that difficult to resolder the wiring on the pots to change them if need be.
Plug it in and test and make sure the knobs and buttons do as they should, then change if need be.

Re: DTA Dyno Box/Serial Cable -- Schematics and Pictures

Posted: Sun Jun 08, 2014 4:06 pm
by katana
ACW - anti clockwise.......CW - clockwise from knob side?

Re: DTA Dyno Box/Serial Cable -- Schematics and Pictures

Posted: Sun Oct 11, 2015 4:49 am
by Pockets
I have made a dyno box as provided by Stevieturbo. Advance works fine but fuel is unresponsive, whether coarse or fine. How should I troubleshoot this?

Cheers