Search found 6 matches

by Matt303
Mon Jun 22, 2020 6:18 am
Forum: Tuning Servos
Topic: Tuning 2x PID Loops
Replies: 10
Views: 383

Re: Tuning 2x PID Loops

Hi Tom, Is there an alternative TMS320C6722BRFP200 since there are not any available at Digikey, I see mouser has them available, will order from there. How else could there be 3.2v on the 2.5v reg output if the reg has not failed? Anything else I can test to determine what has failed? Internal laye...
by Matt303
Thu Jun 18, 2020 11:57 pm
Forum: Tuning Servos
Topic: Tuning 2x PID Loops
Replies: 10
Views: 383

Re: Tuning 2x PID Loops

Hi Tom, It disconnected from PC randomly and won't reconnect. Now the 2.5V reg is reading the same as the 3.3v reg and the 1.2v reg is reading correctly at 1.19V I then pulled the power and reconnected and now it won't light up at all and back to being dead. Maybe change out the regs or possibly the...
by Matt303
Thu Jun 18, 2020 9:21 pm
Forum: Tuning Servos
Topic: Tuning 2x PID Loops
Replies: 10
Views: 383

Re: Tuning 2x PID Loops

Hi Tom, The testing with meter was set on volts and I tested to the terminals on the Odrive, not even on the Kflop, so there was no way to short any pins. I feel something larger has happened. The 1.12V voltage regulator is reading 2.35V so that looks to be damaged and could have damaged other compo...
by Matt303
Thu Jun 18, 2020 5:53 am
Forum: Tuning Servos
Topic: Tuning 2x PID Loops
Replies: 10
Views: 383

Re: Tuning 2x PID Loops

Hi Tom, It looks like I have damaged the Kflop. The ground wire between the Kflop and Odrive disconnected and I wondered why the Encoder stopped reading all of a sudden so I grabbed a multimeter and checked between 3.3v and encoder line and all of a sudden there was a high-frequency noise and all li...
by Matt303
Thu Jun 18, 2020 1:02 am
Forum: Tuning Servos
Topic: Tuning 2x PID Loops
Replies: 10
Views: 383

Re: Tuning 2x PID Loops

Hi Tom, I started thinking about it also and I think you may be right. The PWM on the Odrive is a new implementation that is being worked on and I have merged it into my Github and devel branch of the Odrive. The details of the PWM can be found here further down the page https://github.com/MatthewRe...
by Matt303
Wed Jun 17, 2020 7:43 am
Forum: Tuning Servos
Topic: Tuning 2x PID Loops
Replies: 10
Views: 383

Tuning 2x PID Loops

I'm having issues tunning Kflop interfaced to an Odrive https://odriveroboticsdotcom The test set up is a nema17 8 pole BLDC motor connected to 1800ppr encoder. If I set it up with the SnapAmp I can get it running perfectly following the motion profile. I'm controlling the Odrive via PWM and directi...