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by RyuX
29 May 2018, 17:23
Forum: Hardware Problems
Topic: Low Voltage on 3.3V and 5V Pin
Replies: 8
Views: 1818

Re: Low Voltage on 3.3V and 5V Pin

I bought my DRV Chips from Mouser and Arrow. Currently I replaced the D5 Diode and with the 18V Lab Supply I now read 3.25V at 3.3V Rail and 6.82V at the 5V Rail. The Board was drawing 0.09A before (sorry not 0.9A) and now it is drawing around 0.07A. Any hints what else I could check ? It's really g...
by RyuX
25 May 2018, 11:45
Forum: Hardware Problems
Topic: Low Voltage on 3.3V and 5V Pin
Replies: 8
Views: 1818

Re: Low Voltage on 3.3V and 5V Pin

I changed the DRV8302 3x already to different new parts.. made sure the bottom GND is soldered.. I also replaced the STM32F405 and flashed it again with STLink. But I still only measure 1.8V on the 5V Rail from the DRV Chip. Anyone please have a hint ? EDIT 2: I tested the PCB with a 18V Lab Supply....
by RyuX
24 May 2018, 18:49
Forum: Hardware Problems
Topic: Low Voltage on 3.3V and 5V Pin
Replies: 8
Views: 1818

Re: Low Voltage on 3.3V and 5V Pin

I have exactly the same problem, how could you fix it ? I am pretty certain my GND Pad on the bottom is soldered correctly as I used solder paste and a reflow station and pressed the IC firmly to the board until even some solder came out on the side. I also don't have any shorts and everything seems...
by RyuX
21 Apr 2018, 21:59
Forum: FOC
Topic: DRV8302 faults with FOC
Replies: 27
Views: 17218

Re: DRV8302 faults with FOC

Thanks benjamin.. Just did this mod and the FOC Mode now finally works for me :)

The strange thing is my motor is heating up quite fast and will have overtemperature after riding 30min.
Anyone have a clue ?
by RyuX
09 Apr 2018, 15:58
Forum: Hardware Problems
Topic: VESC dead (no more lights) probably STM32F4 ?
Replies: 5
Views: 1716

Re: VESC dead (no more lights) probably STM32F4 ?

Hey there today I replaced the STM32F4 and have been able to upload the bootloader and firmware. I connected the VESC with my PC - but motor detection will fail. The motor will only make cracking noises and not really move. Could it be that my DRV is also damaged or is this more of a MCU problem ? T...
by RyuX
02 Apr 2018, 14:07
Forum: Hardware Problems
Topic: VESC dead (no more lights) probably STM32F4 ?
Replies: 5
Views: 1716

Re: VESC dead (no more lights) probably STM32F4 ?

Thanks for clarifying. I just wondered because my Firmware is named: BLDC_4_ChibiOS and my Bootloader is named: BLDC_4_Bootloader. When compiling the firmware I made sure that I set the Hardware to 4.12 before compiling it - at the bootloader I didn't see an option and just compiled it as is. So I h...
by RyuX
01 Apr 2018, 19:16
Forum: Hardware Problems
Topic: VESC dead (no more lights) probably STM32F4 ?
Replies: 5
Views: 1716

Re: VESC dead (no more lights) probably STM32F4 ?

Short sidenote: After removing the STM32F405 and reconnecting the VESC I measured the voltage rails and I have 3,3V and 5V. Also the PPM Receiver and the blue LED on the VESC is lighting up again (however the blue LED will be solid but start blinking after a while). So hopefully my STM32F4 replaceme...
by RyuX
01 Apr 2018, 15:01
Forum: Hardware Problems
Topic: VESC dead (no more lights) probably STM32F4 ?
Replies: 5
Views: 1716

VESC dead (no more lights) probably STM32F4 ?

Dear community. Yesterday I wanted to connect a bluetooth module to the UART Port when suddenly for a very short amount of time the RX and GND Pins touched because a cable came off. I saw a tiny spark and then it was lights out. After some troubleshooting I measured that GND and VDD hat a short circ...
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[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

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