Problem with logitech g27 and race07

[sirnoname]

Thats what I told you. Your circuit between the arduino and the wiper produce some electrical noise. Do you use galvanic splitters like optocuplers?

[dennisnojack]

The Pololu Jrk is not optoisolated.
If you use this one, the problem is solved. Then you need a optoisolator between arduino and Pololu Jrk. If you ask google, there are more people who have the same problem with the Pololu Jrk.

[Monaco85]

Do you all really have optocuplers betwenn? U think the problem is solved if i change the power supply from arduino to own 5V power

[dennisnojack]

Nope. Then you still use the same circuit. I read much about motordrivers. Thats why i not will use the Pololu or MonsterMoto.
I will use a optoisolated H-Bridge.

The optoisolator is like a "One Way Road". "No accidents" because no Traffic. Signals only go from Arduino to Pololu. No signals, electrical noises or something that cause problems reach your arduino.

[dennisnojack]

Try something different.
Disconnect the Pololu from the Arduino (arduino still connected to PC) and then start Race without motion.
I bet all will work. Then you have the answer.

[Monaco85]

Okay today i will test with second computer. If it works your right.

Iread something, that the usb on computer will be disabled if there is a problem on arduino.

[dennisnojack]

USB only will protect it self, if there are over-current or over-voltage. Not if there are noises or collisions.

Month ago i have a problem with my 8 Channel Native instruments Soundcard (DJ Audio). I had electrical noises when i play sounds music e.t.c. My Mouse (noname) wasn't optoisolated and disturbed the soundcard. Now i use a Logitech mouse and all is fine.

[Monaco85]

This is really crazy. You are right. Without the pololu powered it works.

[dennisnojack]

This is what you need.

https://www.sparkfun.com/products/9118

or this H-Bridge

Features:
This driver uses Infineon chips BTS7960 composed of high-power drive full H-bridge driver module with thermal over-current protection. Double BTS7960 H-bridge driver circuit, with a strong drive and braking, effectively isolating the microcontroller and motor driver! High-current 43A

Specification:
*Double BTS7960 large current (43 A) H bridge driver;
*5V isolate with MCU, and effectively protect MCU;
*5V power indicator on board;
*Voltage indication of motor driver output end;
*Can solder heat sink;
*Just need four lines from MCU to driver module (GND. 5V. PWM1. PWM2);
*Isolation chip 5 V power supply (can share with MCU 5 V);
*Able to reverse the motor forward, two PWM input frequency up to 25kHZ;
*Two heat flow passing through an error signal output;
*Isolated chip 5V power supply (can be shared with the MCU 5V), can also use the on-board 5V supply;
*The supply voltage: 5.5V to 27V


http://www.ebay.de/itm/BTS7960B-43A-Mot ... 5d43990626

http://www.ebay.com/itm/Semiconductor-B ... 20dce250a6

[Monaco85]

Which pins need to get isolated by optocuplers.?