Paul & Sabrina's cheap DIY 144v motor controller

[MPaulHolmes]

The Hass 300 is 0.625v per 300 amps. So at 300 amps, the output would be 2.5v + 0.625v. I have no idea about the temperature sensor. hahaha. I forgot.

[DJBecker]

Originally Posted by Camaro

Then you've had better luck than me. I've been working with PIC's and other micro controllers for many years, and I've never accidentally locked a controller until I messed with the AVR. Those stupid fuse bits. Why call them fuses? They're configuration bits. I've also never been happy with Arduino. For someone getting started it's fine, but I like having lower level control to my bits.

Hardware for Arduino doesn't have any specific limit. It's just AVR processor boards with some standardization. You don't have to use the limiting programming environment, and you get to take advantage of all of the hardware pieces that fit together.

And having the environment there lets you easily get back to a running system if anything goes wrong.

[apowers]

Hi Paul, and everybody else.

I am thinking about adding a second contacter. I have the unified 16k firmware . The chip is an M 8. Will this operate the second contacter?

This is to make it easier for someone else to drive the vehicle. Could someone get in and turn the key on , and between the time the key is switched and the second contacter is switched place their foot on the accelerator and cause a problem ? Did that make any sense?

Thanks Alvin

[DJBecker]

Originally Posted by apowers

I am thinking about adding a second contacter. I have the unified 16k firmware . The chip is an M 8. Will this operate the second contacter?

This is to make it easier for someone else to drive the vehicle. Could someone get in and turn the key on , and between the time the key is switched and the second contacter is switched place their foot on the accelerator and cause a problem ? Did that make any sense?

My reading of the Cougar source code has the HPL / High Pedal Lockout check being done independently of the PRECHARGE_WAIT / contactor timeout. Someone that doesn't understand the delay, or just counted wrong, could have the contactor close and the controller immediately start to ramp up power.

It could be argued that this might be a safety problem. It would be trivial
to change the behavior by reordering the checks and making clearing them a sequential condition.

if (fault_bits & HPL_FAULT) {
.... /* Clear fault if the throttle pedal is released. */
}
if (fault_bits & PRECHARGE_WAIT) {
.... /* Clear fault after the timeout. */
}

------------

if (fault_bits & PRECHARGE_WAIT) {
.... /* Clear fault after the timeout. */
} else if (fault_bits & HPL_FAULT) {
.... /* Clear fault if the throttle pedal is released. */
}

[MPaulHolmes]

Ya, I've fixed that since then. I need to repost the updated software.

[apowers]

How long ago was that updated? I just loaded that firmware about a month ago.

Alvin

[MPaulHolmes]

Oh just in the last few weeks actually. Well, the code had been changed, but I just hadn't emailed the .hex file to myself, since it was in the black pit of despair (linux). Hey! Check out the fish my dad just caught on Friday! He made the news too.

See photos of the latest catches from Westport | KING5.com Seattle

[ChiefsBuggy]

Bet he's kicking himself for not buying a derby ticket. :-)

[MPaulHolmes]

He brought it in with 30 pound test line too. They weren't fishing for Halibut, so they had wimpier line since they just wanted to get sea bass, and maybe a ling cod or green ling. They only had 2 gaff hooks too, so they almost couldn't get it in the boat.

[mrbigh]

Originally Posted by MPaulHolmes

Oh just in the last few weeks actually. Well, the code had been changed, but I just hadn't emailed the .hex file to myself, since it was in the black pit of despair (linux). Hey! Check out the fish my dad just caught on Friday! He made the news too.

See photos of the latest catches from Westport | KING5.com Seattle

Holly mackarel !!!! a 133 pounder. I had never see such a big fish of that type.