Dynomotion Forum

Hi Tom, Yes have checked all the soldering under a microscope and everything looks good. I will double-check, but it seems there's just no life at all and there's no heat in any of the IC's. I replaced the FTDI IC and even my PC does not get any type of connection in the device manager. Can I flash ...

Hi Tom,

Finally got the replacement ICs and replaced all three and still no luck. The voltages from the regs are correct now. No lights or connection to the PC. I guess that only leaves the SDRAM and Flash ICs to replace, what do you think?

Thanks,
Matthew

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...

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...

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...

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...

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...

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...