Cheap "high voltage" esc Quest

[sikeston34m]

Originally Posted by rschoi_75

any news on this?

Hey sike... this is off topic, but I just saw a little show on your hometown. Looks nice! They showed the restaurant where the waiters throw dinner rolls at you... looked like fun and good food. It makes me hungry for some chicken fried steak. mmm.....

No new yet. I need to lift that brain board and get a better look. I have a feeling the brain board might be bad though.

Aaaah, you must be talking about Lamberts. We have ate there several times. There's a guy that comes around pushing a cart full of fresh out of the oven rolls. He yells "Hot Rolls!!!!!!!", you hold your hand up and he throws one across the room at ya. LOL

They have some great food there. It's nicely laid out too.

[lutach]

Originally Posted by sikeston34m

No new yet. I need to lift that brain board and get a better look. I have a feeling the brain board might be bad though.

Aaaah, you must be talking about Lamberts. We have ate there several times. There's a guy that comes around pushing a cart full of fresh out of the oven rolls. He yells "Hot Rolls!!!!!!!", you hold your hand up and he throws one across the room at ya. LOL

They have some great food there. It's nicely laid out too.

Sike,

Are you going to post pics of the brainboard here?

[sikeston34m]

OK, I got the Brain Board lifted.

Here's a picture.

OK class! Quiet down! Can anyone guess what's wrong with this picture?

That's any easy one huh? OK, is there an advanced student in here that can tell me why this happened?

[sikeston34m]

Does anyone have a Brain Board that would make a good transplant?

[MetalMan]

It's kinda hard to tell what exactly those are that blew, but to me they look like diodes (on the right). On the top left something else looks blown, but I don't know what it is.

[sikeston34m]

Originally Posted by MetalMan

It's kinda hard to tell what exactly those are that blew, but to me they look like diodes (on the right). On the top left something else looks blown, but I don't know what it is.

Those two components are connected in series to the center (red) receiver wire.

[lincpimp]

Internal BEC?

Do I win anything?

[sikeston34m]

Originally Posted by lincpimp

Internal BEC?

Do I win anything?

Ding! Ding!

Now let me tell you what you didn't win! LOL

The big square thingie in the top right with the legs. Well that is a linear regulator. Those things you hear about that reduce the pack voltage to 5v? Well that's the heart of it.

The two burnt thingies, I believe to be Diodes. I'm not 100% sure on that though. (Griffin, can you help me out here?)

One thing that was very puzzling about this is the fact that we have continuity between the red receiver (power) wire and the Black Negative.

I spotted a melted spot in the receiver wire. Very flat and I was thinking this was the source of the whole problem. I removed the wire. Problem is still there.

I removed the two burnt thingies and the continuity is gone. Even though continuity is now gone, I still don't have infinity.

I'm still getting .288 kohms between the Linear regulator and the red wire.

I believe the regulator chip is fried too, even though it doesn't show as much damage externally.

Can I remove the regulator altogether and run this ESC with the Opto Mod?

[lincpimp]

Well, from my extremly limited knowledge, the brain has to have some sort of regulated voltage. An opto isolated esc does not have the current ability of a bec built it, but must have some sort of regulated supply for the brain. Time for the smart people to tell you what to do.

[sikeston34m]

Originally Posted by lincpimp

Well, from my extremly limited knowledge, the brain has to have some sort of regulated voltage. An opto isolated esc does not have the current ability of a bec built it, but must have some sort of regulated supply for the brain. Time for the smart people to tell you what to do.

How about I eliminate the onboard bec, then just feed the Brain "through" the red wire from the external bec?

Sounds like I would have to keep the external BEC set at 5 volts though.

Hmmmmm..........

[lincpimp]

Originally Posted by sikeston34m

How about I eliminate the onboard bec, then just feed the Brain "through" the red wire from the external bec?

Sounds like I would have to keep the external BEC set at 5 volts though.

Hmmmmm..........

Sounds like it could work. However I would consult Griffin first to see what he thinks!

[lutach]

I'm not 100% sure, but I think you can. Here is a picure of an OPTO Hacker controller (http://www.rc-monster.com/forum/atta...2&d=1202243485) and you can see 3 silver spot where usually those components would be. Probably tomorrow I will send Artur my Hacker and the other ESC to see if he can swap MCUs. Sikeston, can you post the number on the driver and what that symbol is? Also, what is the part number on the MCU? It looks very much like a Silicon Labs.

[sikeston34m]

Originally Posted by lutach

I'm not 100% sure, but I think you can. Here is a picure of an OPTO Hacker controller (http://www.rc-monster.com/forum/atta...2&d=1202243485) and you can see 3 silver spot where usually those components would be. Probably tomorrow I will send Artur my Hacker and the other ESC to see if he can swap MCUs. Sikeston, can you post the number on the driver and what that symbol is? Also, what is the part number on the MCU? It looks very much like a Silicon Labs.

This is some really tiny stuff. This Camera can see better than I can. LOL

I hope this helps.

[lutach]

Originally Posted by sikeston34m

This is some really tiny stuff. This Camera can see better than I can. LOL

I hope this helps.

Nice. Thank you.

[rschoi_75]

In the voice of Steve Urkel

"dddiiiidddd I doooo that...?"


oops. so it was the bec. umm... my fault.