Paul & Sabrina's cheap DIY 144v motor controller

[flores]

Hehe.. That powerboard is huge.. That's why the cases that so long of course :-)

[isaac_alaska]

at first i was looking at the stepper motor attached to what appeared to be a potentiometer and i was like "wow, is he using a stepper motor to control a pot for automatic pre-charge?" and then i saw that that was actually your cnc mill.

in other news, i did get my boards! i've just been super busy building a trike that i haven't had time to do anything with them yet. the trike we built is competing in the shell eco marathon right now, we're in fifth place!

if anyone wants to vote for the people's choice award that would be awesome just scroll down and find #73 (uaf)
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also i was delivered what appears to be a P&S controller that i was told wasn't programming properly and the guy wanted me to fix it for him....i may have a few questions for you all once i get into it and see what it's doing.

[teraamper]

Paul

I'm looking for the extended high low = 08 dc f7 in the poni prog but I don't find any option fot cofiguration this.

[ElectricZX2]

I just love seeing giant hunks of copper! So, I have a question: How difficult would it be to have a cruise control function on the controller? Basically flip a switch and it holds at a specific motor rpm?

[MPaulHolmes]

Hi Teraamp! I think I used ponyprog one time. Does anyone know how to use it? I think there's a dialog box when you can click on all the random fuse settings, but they might not let you type the 08 dc f7 directly. Try it here:
Engbedded AVR Fuse Calculator

Then select the atmega168, and then type in F8 DC F7 for EXTENDED HIGH LOW (but it goes in the order LOW HIGH EXTENDED AT THE BOTTOM), and see which boxes get checked, and then check those boxes in ponyprog. I hope that works!

electriczx2: I think Jackbauer is super close to cruise control. He just added a tach signal.

[mora]

Ponyprog has a button called "Security bits". It doesn't talk about fuses. You also might need some understanding in binary and hexadecimal systems.

This link explains a bit (fuses and bits, hehe):
Programming AVR fuse bits – oscillator settings - Scientific, embedded, biomedical, electronics contents.

You might want to use hex-to-binary converter to be sure about which fuses to set. Please correct me, but I get that F8 stands for EXTENDED part, DC for HIGH and F7 for low.

- EXTENDED (F8) = 1111 1000
- HIGH (DC) = 1101 1100
- LOW (F7) = 1111 0111

Now every bit has a "name". These are listed in Atmega datasheet if I remember right. Ponyprog lists fuse bits with names like CKSEL3, CKSEL2, CKSEL1, SPIEN etc.

It might be better just to take a simple screenshot of PonyProg security bits window with correct bits set and put it here for everybody to see.

[squiggles]

Originally Posted by mora

- EXTENDED (F8) = 1111 0110

That is not F8 it is F6, maybe you mean 1111 1000

[mora]

Of course, thanks for correcting.

[squiggles]

My pleasure. Is Jyvaskyla anywhere near Piispanportti?

[mora]

I didn't find Piispanportti from online map, but I know there is Piispanristi. Googling Piispanportti gave me some info about it being in Espoo. Both places are about 300km from Jyvaskyla.