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what servo amp for happ hack?

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Brian74:
I have spent a couple hrs a day for the last few days trying to get this to work, but still nothing. I have tried adjusting the pots on the amc when I am in the config screen for the donor wheel. Also when playing a game on the pc,ps3 and the ps2. I can not get it to overload like sharkfactor said to do no matter what I try. Im kinda at a lost for words.  :banghead: I have just over 12. something volts going into the donor wheel. The amc is getting 24v. I try to do the testes inside the config ap, you know blown tire wooden bridge and such. for the most part it works and the ffb feels good but not over strong. After I push the buttons to many times, the happ will barely move the wheel. So idk know I am doing wrong. How did you guys get the amc to overload? What are your pots set at? I know brad said dips 1,3,5 on rest are off. I thought badmouth said all his were either on or off.

brad808:

--- Quote from: Brian74 on June 20, 2012, 09:20:11 pm ---I have spent a couple hrs a day for the last few days trying to get this to work, but still nothing. I have tried adjusting the pots on the amc when I am in the config screen for the donor wheel. Also when playing a game on the pc,ps3 and the ps2. I can not get it to overload like sharkfactor said to do no matter what I try. Im kinda at a lost for words.  :banghead: I have just over 12. something volts going into the donor wheel. The amc is getting 24v. I try to do the testes inside the config ap, you know blown tire wooden bridge and such. for the most part it works and the ffb feels good but not over strong. After I push the buttons to many times, the happ will barely move the wheel. So idk know I am doing wrong. How did you guys get the amc to overload? What are your pots set at? I know brad said dips 1,3,5 on rest are off. I thought badmouth said all his were either on or off.

--- End quote ---

The reason we are using 12v power supplies is so that the amc wont overload! In other words when the donor wheel is sending the max ffb strength its at 12v and the amc can handle 15v. Sounds to me that you have a wiring problem with the buttons if they are causing something to happen with the force feedback. For the time being try to disconnect as many buttons as possible. If I remember correctly you only need to really have the paddle pots hooked up. That way you can focus on getting the ffb working correctly and then worry about the buttons afterwards. Make sure when you measure the voltages on the amc and donor wheel you use the logitech software and not the windows config. Unplug the donor wheel then plug it back in and only open up logitech profiler, not the windows manager. I noticed windows manager will change the results. 

ABACABB:
Oh please please please let this problem be something simple to work out.  I haven't gotten started too much with mine yet because I'm still waiting on my donor wheel but now I'm scared!!  I don't have a good feeling about my outcome with this project and I've got a lot of $$$ in parts already......  :hissy: 

Good luck Brian.  When you find a solution, please post!

brad808:
For potentiometers

#1 loop gain adjustment, put this fully counter clockwise

#2 is current limit, i believe i have mine half way (6 full turns). You can set your own but that is a good start. The most draw i measured in mine was under 4 amps. This ties in with dip 5 which when turned off cuts current by 50%

#3 reference gain, this is what increases or decrease how much force your feedback is getting. If yours is low turn this up. This is a direct ratio between input and output. Reference in from the Logitech to reference out happ motor. You won't have a problem of it being too weak. With the equipment you have you won't be running it at it's full potential because it will most likely be way too strong.

#4 offset. Put the dc volt meter on motor output of amc if it shows 0 your good if it shows anything else (+.4, -.7, anything then adjust this to read zero. That way you don't have more force in one direction or the other. This is good because your potentiometer probably won't be put on 100% at zero where it should be

Sent from my Desire HD

BadMouth:

--- Quote from: Brian74 on June 20, 2012, 09:20:11 pm ---After I push the buttons to many times, the happ will barely move the wheel. So idk know I am doing wrong. How did you guys get the amc to overload? What are your pots set at? I know brad said dips 1,3,5 on rest are off. I thought badmouth said all his were either on or off.

--- End quote ---

I'd go with Brad's settings being that he has his cab set up and is using it.  I've only experimented with this setup to work out the kinks.  
I'm still just using a PC wheel in my cab.

The ffb working, then going away after being used many times is odd and I never experienced anything like that.
Maybe something is getting hot and some type of protection is kicking in.
Does it start working again if left alone for a while?

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