Paul & Sabrina's cheap DIY 144v motor controller - Page 516 - Fuel Economy, Hypermiling, EcoModding News and Forum

isaac_alaska · 10-24-2011, 09:01 PM

Awesome! Where is the ">24 volts" measured? I don't see where B- ties to the board anywhere. Maybe I'm just blind

MPaulHolmes · 10-25-2011, 12:43 AM

Hello! The voltage measuring circuit measures the battery pack. The bottom island ground is the same as the power ground. The voltage measuring circuit then sends the voltage info across an optocoupler, so the micro knows the voltage but stays isolated.

isaac_alaska · 10-25-2011, 10:13 PM

almost there! is there an easy walk through on how to use the avr studio software to load firmware onto the controller? i downloaded the firmware files from the wiki that sawickm had uploaded. one is a .c file, the other is a .h file.

i'm assuming i hit "new project" in avr studio, but then i'm not sure if i'm supposed to use "ATMEL AVR assembler" or "AVR GCC"

some help on walking through all of this would be awesome!

(i'm running windows 7 ultimate right now, i can find another OS if that's a problem)

adamj12b · 10-25-2011, 10:30 PM

Quote:

Originally Posted by isaac_alaska

almost there! is there an easy walk through on how to use the avr studio software to load firmware onto the controller? i downloaded the firmware files from the wiki that sawickm had uploaded. one is a .c file, the other is a .h file.

i'm assuming i hit "new project" in avr studio, but then i'm not sure if i'm supposed to use "ATMEL AVR assembler" or "AVR GCC"

some help on walking through all of this would be awesome!

(i'm running windows 7 ultimate right now, i can find another OS if that's a problem)

You cannot use avr studio to build the source for the controller.

You have to use the make file that should be with the C code.

You might be able to use the files from some other firmware. You can get all the old firmware files in my archive. Index of /firmware

Your best bet is to set up a linux dev environment.

-Adam

MPaulHolmes · 11-03-2011, 12:56 AM

When I have more than 3 seconds, I'm going to get the code compileable without the bootloader so it can be done in AVR Studio. I was going to order the new boards this week... We take credit cards, and "Power Pay" takes a little for each transaction. WELL, it turns out that they take a little for each transaction, even if it's a failed transaction that a random person makes with a fake credit card. That would have been good to know about. Someone made like 20000 fake transactions that all were denied, and so we just got charged like $860 this month for all the fees associated with all the bad transactions that never went through.

Does that seem stupid to anyone else?

Edit: Make that $970, since authorize.net also charged for each transaction that didn't go through too. hahaha.

harlequin2 · 11-03-2011, 01:27 AM

No, that seems very clever to me! Wish I'd thought of it.......

isaac_alaska · 11-03-2011, 01:32 AM

New code sounds amazing! That would help me a ton. Otherwise I was going up ask if I could buy a chip from someone with the bootloader already on it, so I can just plug it into my board and try it out without having tonkearn how to program it

What's gonna be on the new boards? I have two capacitors, and only one logic board. That leaves me one board short. Would be nice to have another

Greg Fordyce · 11-03-2011, 11:39 AM

Quote:

Originally Posted by MPaulHolmes

Someone made like 20000 fake transactions that all were denied, and so we just got charged like $860 this month for all the fees associated with all the bad transactions that never went through.

Does that seem stupid to anyone else?

I wouldn't let them take that money without making a fuss. Sounds like someone is committing a fraud, so file a police report. Then go back to your bank and PayPal(?) and file a complaint with your police report number. Don't be afraid to name and shame the companies charging you for being a victim of fraud. That sort of stuff really pisses me off!

Greg