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by jbelanger
Wed Jan 13, 2021 5:19 pm
Forum: Dual VR
Topic: Dual VR V2.1
Replies: 88
Views: 78516

Re: Dual VR V2.1

You can leave the clip floating as long as you have the other one connected to ground. They should all be connected together inside the device. This is also why you saw the interference between the signals. Connecting both clips to the same ground will also work but will be redundant.

Jean
by jbelanger
Wed Jan 13, 2021 4:06 pm
Forum: Dual VR
Topic: Dual VR V2.1
Replies: 88
Views: 78516

Re: Dual VR V2.1

I suspected that this was your issue because that's not obvious when you're not used to working with a scope (or at least with that type of signal). You really need to think of the clip as the reference for all the signals and not simply the ground or the '-' of the signal you're measuring. You can ...
by jbelanger
Wed Jan 13, 2021 3:33 pm
Forum: Dual VR
Topic: Dual VR V2.1
Replies: 88
Views: 78516

Re: Dual VR V2.1

Your problem is that you're using VR+ and VR-. Neither of them is a ground or reference. You cannot connect the alligator clip to them or you'll screw up the signal on all the channels. Connect the probe to either VR+ or VR- and leave the clip unconnected. As long as you have the other clip connecte...
by jbelanger
Wed Jan 13, 2021 2:39 pm
Forum: Dual VR
Topic: Dual VR V2.1
Replies: 88
Views: 78516

Re: Dual VR V2.1

What are each wire connected to? Black, orange, yellow, red? And which alligator clip (yellow, red) correspond to which probe? I can't see from the picture.
by jbelanger
Wed Jan 13, 2021 2:06 pm
Forum: Dual VR
Topic: Dual VR V2.1
Replies: 88
Views: 78516

Re: Dual VR V2.1

You either have wiring problem or a measuring problem. The output you're seeing is not possible from the board: you either have 5V or 0V at the output. If you're seeing something else (the bump in your trace or, even worse, 8.4V peak), you are either not measuring the actual output of the board poss...
by jbelanger
Sat Jan 02, 2021 9:47 pm
Forum: Dual VR
Topic: Dual VR V2.1
Replies: 88
Views: 78516

Re: Dual VR V2.1

Good to see you have a working setup. But it is annoying to not be certain what the issue was. It might be that you corrected some issue through the re-wiring or you may have an unstable input on your MS; there might be a cold solder on one of the input circuit component. Let's see what the DIYAutot...
by jbelanger
Thu Dec 31, 2020 11:55 pm
Forum: Dual VR
Topic: Dual VR V2.1
Replies: 88
Views: 78516

Re: Dual VR V2.1

There are so many oscilloscope choices out there that it is difficult to give an advice. It also depends if you think you'll use it a lot or you just will need it once in a while and if you think you will always have a PC available. In the latter case you could go with a USB scope which will be chea...
by jbelanger
Thu Dec 31, 2020 6:23 pm
Forum: Dual VR
Topic: Dual VR V2.1
Replies: 88
Views: 78516

Re: Dual VR V2.1

Eric, Can you compute the frequency of the signal at the point where the speed goes wrong (which is what I assume happens in your picture where the speed goes way up before going back down to 0)? But that's probably not the issue. If that goes completely down to 0 and stays there when at other times...
by jbelanger
Tue Dec 29, 2020 7:34 pm
Forum: Dual VR
Topic: Dual VR 2.1 Installation Box
Replies: 2
Views: 1243

Re: Dual VR 2.1 Installation Box

Nice setup and thanks for sharing!

Jean
by jbelanger
Fri Dec 18, 2020 1:33 pm
Forum: I/O Extender
Topic: TinyIOx
Replies: 28
Views: 13964

Re: TinyIOx

Marc,

Good to see that it is working well.

And yes, I have them in stock. The only problem is that shipping is slower at this time due to COVID and the holidays so I can't say when you can expect to receive the boards.

Jean
by jbelanger
Thu Dec 03, 2020 1:51 pm
Forum: Introduce yourself
Topic: Learning something new
Replies: 2
Views: 4576

Re: Learning something new

Hi and welcome to the forum!

Jean
by jbelanger
Thu Nov 19, 2020 2:02 am
Forum: I/O Extender
Topic: Tiny IO
Replies: 13
Views: 3188

Re: Tiny IO

Yves,

Le condensateur externe et la résistance interne forment le conditionneur ADC. Donc ta suggestion d'un condensateur de 0.22uF est effectivement suffisant.

Jean
by jbelanger
Tue Nov 17, 2020 10:17 pm
Forum: I/O Extender
Topic: Tiny IO
Replies: 13
Views: 3188

Re: Tiny IO

Yves, J'aurais dû y penser plus tôt car ce n'est pas évident qu'un module Bluetooth doit être déconnecté. Mais au moins c'est bien d'avoir une solution. Et il y a toujours la question à savoir pourquoi ça ne marche pas avec le module Bluetooth directement; ça marche pour moi mais c'est très lent. Le...
by jbelanger
Tue Nov 17, 2020 6:47 pm
Forum: I/O Extender
Topic: Tiny IO
Replies: 13
Views: 3188

Re: Tiny IO

Pas de problème avec ce dernier fichier. Une chose qui pourrait être un problème est ta connexion Bluetooth. Est-ce que ton module est connecté au DB9 sur le MS3 lorsque tu connecte avec le port USB. Les 2 connecteurs partagent le même port sur le CPU donc il peut y avoir interférence. Assure-toi qu...
by jbelanger
Tue Nov 17, 2020 5:45 pm
Forum: I/O Extender
Topic: Tiny IO
Replies: 13
Views: 3188

Re: Tiny IO

Dans ton fichier msq, Master est Off et 29 Bit Megasquirt CAN est Off. Il faut les 2 à On (et aussi PWM polling Disabled). Et ioedl_ms3 est pour le IOx et non pour le TinyIOx. Si tu vois le TIOx avec le port scanner, tu devrais pouvoir faire le firmware update avec le port scanner. Une chose à essay...
by jbelanger
Tue Nov 17, 2020 4:26 pm
Forum: I/O Extender
Topic: Tiny IO
Replies: 13
Views: 3188

Re: Tiny IO

The first picture shows one thing that should be changed (and is different from the default). Change Master Enable from 'off' to 'on'. And check again. As for the error message, it's because the firmware update has only been partially done and the TIOx no longer has a valid firmware in it. It needs ...
by jbelanger
Tue Nov 17, 2020 2:00 pm
Forum: I/O Extender
Topic: Tiny IO
Replies: 13
Views: 3188

Re: Tiny IO

Make sure that you turn off any CAN polling or any CAN messaging on the MS3 before you do the firmware update. The CAN messages from the MS3 will interfere with the CAN messages for the firmware update.

Jean
by jbelanger
Tue Nov 17, 2020 1:51 am
Forum: I/O Extender
Topic: Tiny IO
Replies: 13
Views: 3188

Re: Tiny IO

Yves, That's usually the message you get when another program is accessing the COM port. Is TunerStudio closed when you run the port scanner? If not that's likely the problem. If TunerStudio is closed, you need to check if you have any app running in the background that could try to access a Bluetoo...
by jbelanger
Sat Oct 31, 2020 11:43 am
Forum: I/O Extender
Topic: TinyIOx
Replies: 28
Views: 13964

Re: TinyIOx

Email sent with the s19 file for 3.4.4. Use the ini file from the official release.

Jean
by jbelanger
Mon Oct 26, 2020 5:08 pm
Forum: I/O Extender
Topic: TinyIOx
Replies: 28
Views: 13964

Re: TinyIOx

I have confirmed that there was bug in the MS2/Extra code and I have a corrected version available for both 3.4.3 or 3.4.4. You can contact me if you want the s19 file for either. That was a very minor bug and I'll check with James so that he includes that in the next release.

Jean