electronics/sim%20racing/TM-T3PA-LoadCellMod/

[utterances-bot]

Thrustmaster t3pa pedal Load Cell Mod | Simonas G

Based on some forum posts, blogs and this Youtube Video I made a load cell pedal mod.

https://slowlogicboy.github.io//electronics/sim%20racing/TM-T3PA-LoadCellMod/

[kazenine]

hey bro, dat amp is soldout, i cannot find another one, can u recommend some same board ?

[SlowLogicBoy]

I wasn't able to find an alternative one like this, but any other instrumental op-amp should work, you just need to figure out how to connect one.

[SlowLogicBoy]

Updated post with same op-amp different board

[briefer666]

Hi mate! I used the alternate ad623 and it worked like a charm! thanks!!!

[brenobreno]

I can’t use the new ad623, idk why. I jumped the ref with pin2 GND and follow the instructions about the others pins. :/ briefer666 can u upload pictures?

[SlowLogicBoy]

1. When you connect T3PA to the base does the chip get hot? if so you mixed up t3pa GND and v3.3 (they might be mixed up you need to check voltage with multimeter)
2. Have you soldered potentiometer to this chip, if so, have you tried turning it until thrustmaster software picks it up?
3. Have you tried switching load cell green and white wires?

[brenobreno]

Yes, I tried that way, I even tried to use the arduino to do the reading but the signal has a lot of noise.

[Doublez720]

hi，I bought the same amp and soldered it with your soldering method, but it didn't work, I don't know why

[SlowLogicBoy]

1. Did you try to adjust the potentiometer?
2. Does op-amp get hot?
3. have you tried swapping load-cell wires?

[Boldey]

Thank you for this guide! I got it to work with a Youmile AD623 from Amazon.

-I did have to reverse the green and white wire.
-The potentiometer/trimpot has to be adjusted all the way up (clockwise) until you hear a click, and then dailed down a couple of half turns and tweaked from there.
-GND and REF get soldered together. V- is not connected.
-It looks like all the T3PA have black wire for 3.3V and red for GND.

I hope this helps someone who couldn’t get it to work.

Again, thank you very much for this very helpful guide. I got myself a loadcell brake and it feels amazing, highly recommended!🤘🏼

[SupremeFatPanda]

Hey, I tried to follow all the steps with the new op-amp, including switching white and green wires and following Boldy's suggestions. The amp does not get hot and I've tried to adjust the pot. It turns infinitely. Any thoughts?

[SlowLogicBoy]

Hey, if it's type of pot, it's really sensitive, and sometimes you only need to touch it to get a good reading, I had to fiddle with this quite a bit to find a spot that works and it has only a small margin of where it works, so try slowly adjusting it and by slowly I mean a touch.
Also I used a whole metal screw driver, so testing it while touching it messed up all the readings, so I had to nudge it and take away a screw driver and do so until I got a good reading.

[SupremeFatPanda]

It is a blue pot with a small brass flat head screw knob. I decided to revert everything back to stock since I didn't like that the pedal has no movement, besides the fact that I couldn't get things to work. I appreciate the tutorial though. I may just well upgrade my equipment altogether. Thanks!

[sj11968]

great project, interested to try it but got a question.
will the ad620 work?

[SlowLogicBoy]

I skimmed through AD620 spec sheet, I see no reason why it shouldn't work, but I can't guarantee it so.. just like I can't guarantee it with AD623, because some people were not able to make it work. Is it because of op-amp or load cell who knows... 😄 price of a DIY