Paul & Sabrina's cheap DIY 144v motor controller

[wakinyantanka]

Originally Posted by MPaulHolmes

hahahaha yes! I believe! I also believe that little boy would have sunk in his little raft if he got much older! hahahaha

I'm almost ready to test the bms and charger! super super super close!

Hi Paul,
What's the chances of getting one of the atmega chips programmed by itself?
I looked over at your site but didn't see anything.
Thanks

[MPaulHolmes]

hello! the chance is 100%. I just ordered a few. I'll ask sabrina to post it again.

-Paul

[wakinyantanka]

Originally Posted by MPaulHolmes

hello! the chance is 100%. I just ordered a few. I'll ask sabrina to post it again.

-Paul

NICE
I have an idea for a style of controller of my own flavor.
How many gate drivers can it support?

[MPaulHolmes]

The control board right now just has a single spot for a driver, but the microcontroller can drive several mosfet drivers.

[wakinyantanka]

Originally Posted by MPaulHolmes

The control board right now just has a single spot for a driver, but the microcontroller can drive several mosfet drivers.

Excellent, just what I wanted to hear.

[etlaare]

Eeeeeps... multiple user errors ... after my first successful testdrive

http://www.youtube.com/watch?v=2RlzxXaaTKE

I was re-wiring and cleaning up the cables. Stupid me messed up there and now I am in recovery mode having a VREF out of range indication in the rtd explorer ...

If I measure +5V between SGND and +5V on the LEM but nothing between SGND and CURRENT does that mean my LEM is broken ?? Or could anybody suggest more measuring points that could indicate other defects ?

[MPaulHolmes]

Do you have one of the LEM HAS 300-S instead of LEM HASS 300-S? You can check by looking at the back of the sensor:


Does the back look like that?

[MPaulHolmes]

Could you remove the LEM from the circuit, and apply 5v power to the LEM, and then check Vref on the LEM? It should be approximately 2.5v. Also, Vout should read 2.5v too in that situation, because the current would be 0 amps. I know the cable is probably soldered to the control board, so it might mean making a new cable. If you are seeing 0v on Vout, then:

1. There's a short on the control board, so Vout is connected to system ground
2. LEM is broken.
3. Wrong LEM. (I don't think it's the wrong LEM if you were driving around with it)

[ludiagsm]

Originally Posted by etlaare

Eeeeeps... multiple user errors ... after my first successful testdrive

I was re-wiring and cleaning up the cables. Stupid me messed up there and now I am in recovery mode having a VREF out of range indication in the rtd explorer ...

If I measure +5V between SGND and +5V on the LEM but nothing between SGND and CURRENT does that mean my LEM is broken ?? Or could anybody suggest more measuring points that could indicate other defects ?

very nice

[sawickm]

I found the link below for Rev.D Controller kits.

Not much said in this fourm about this kit

Electric Vehicle Parts