MicroSquirt.com read only forum (Jan.15,2018)

Hey,
I am sorry for my poor english but I hope you´ll understand.
To begin with, I bought MS V2.2 board: http://www.diyautotune.com/catalog/micr ... p-381.html
Now i have some questions about wiring it up. I actually do not know what pins i have to use to make that cable connecting computer and this ECU. What is this cable type? Does the cable between computer and ECU begin from J1 pins?
Or may be someone has a explanation to all these pin outs (where to connect rxout,txout,canl,canh etc etc..)?

Thank You
Mark

The connections on the MicroSquirt module and their functions are explained here:

http://www.microsquirtmodule.com/index.htm

We typically connect them to a PCB rather than a cable, but you could solder a cable to a module if you want.

Thank You for the link,
But..Could you tell me what type of cable is between computer and the module?
The next question is how do i know that "for instance, if there is 8 terminals, what is the proper order?"

makuke wrote:Thank You for the link,
But..Could you tell me what type of cable is between computer and the module?

You need to send an RS-232 level signal to the module. What cable you use to get it there is up to you.

The next question is how do i know that "for instance, if there is 8 terminals, what is the proper order?"

I'm sorry, I don't understand that question at all.

I mean that the RS-232 level signal is sent by cable. This cable consist of many wires and how do i know, what pins i should use? I do not know where to connect these following pins: Serial Tx, serial Rx, bootload, CANH, CANL, Vref, opto in (+), opto in(-). I expect that some of the pins i have to use in order to establish connection between module and computer.

I´m sorry for my language,
Mark

makuke wrote:I mean that the RS-232 level signal is sent by cable. This cable consist of many wires and how do i know, what pins i should use? I do not know where to connect these following pins: Serial Tx, serial Rx, bootload, CANH, CANL, Vref, opto in (+), opto in(-). I expect that some of the pins i have to use in order to establish connection between module and computer.

I´m sorry for my language,
Mark

Hi Mark,

the microsquirt serial connection uses 3 wires only: Serial TX (6), Serial RX (4) and Serial ground (31). That's pin 2, 3 and 7/1 on a standard 9-pin serial connector.

Regards,
Markus

Thank You Markus!
To make my mind clear, did you mean that Serial ground I have to connect into pin 7 AND 1 or just choose one of them?
You say that this 9pin serial cable with USB connector is the right thing i need?


Big thanks to You!
Mark

makuke wrote:Thank You Markus!
To make my mind clear, did you mean that Serial ground I have to connect into pin 7 AND 1 or just choose one of them?

Yes. Vendors sometimes don't agree on which of them is shield and which is ground, so better connect both.

makuke wrote: You say that this 9pin serial cable with USB connector is the right thing i need?


Big thanks to You!
Mark

Can't guarantee that this specific make will work (µS seems to be a bit picky regarding USB<->serial adaptors at times), but in principle - it's what you need.