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Old Dec 30, 2012, 08:41 AM
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Joined Dec 2012
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Is low voltage cutoff supported

Hi,
Managed to change 2 Turnigy F-20A's to brushed, anyone know if it's possible to set or use a low voltage cut-off for lipo batteries?
Thanks
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Old Dec 31, 2012, 01:08 AM
Master of Flash
LazyZero's Avatar
Alsdorf/Eifel, Germany
Joined Jun 2005
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Quote:
Originally Posted by phthomps View Post
Hi,
Managed to change 2 Turnigy F-20A's to brushed, anyone know if it's possible to set or use a low voltage cut-off for lipo batteries?
Thanks
Can you share your changes to make the F20 work?

Thanks Christian
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Old Dec 31, 2012, 10:44 AM
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Joined Dec 2012
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Programming ESC to Brushed

Hi,
I removed a small part of the black rubber backing on the ESC and it exposed 6 programming pins on the circuit board near the red wire.
In order from bottom to top, they are: MOSI/MISO/SCK/GND/VCC/RESET.
The firmware came from: https://launchpad.net/brushed
I used a USB AVR programmer and it flashed the hex file in a few seconds.
After that, connected it up and it's working great
Best Regards,
Paul
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Old Jan 29, 2013, 02:13 PM
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Joined Jul 2012
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Nice programing, wonder what it can be use for...

What if using the 2 in 1 esc software together with a kk2 to make a Segway?
Should be possible.

Hardware maybe wiper motors from the scrapyard?

Unfortunately I must relay on you programing geniuses. ;-)
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Old Feb 21, 2013, 06:26 PM
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Joined Nov 2012
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Copernicus552

Quote:
Originally Posted by phthomps View Post
Hi,
I removed a small part of the black rubber backing on the ESC and it exposed 6 programming pins on the circuit board near the red wire.
In order from bottom to top, they are: MOSI/MISO/SCK/GND/VCC/RESET.
The firmware came from: https://launchpad.net/brushed
I used a USB AVR programmer and it flashed the hex file in a few seconds.
After that, connected it up and it's working great
Best Regards,
Paul
Could you please show diagram of how to wire the motor connections to this ESC, I am assuming battery connection will stay the same? Just got a flushing tool rom Hobby King, will try it out as soon as I know the motor connections, hate to fry it.

Thanks

http://www.hobbyking.com/hobbyking/s...hing_Tool.html
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Old Jun 11, 2013, 10:03 PM
The Ottoman Flyer
USA, TX, Galveston
Joined May 2010
152 Posts
I just flashed my F-30 with this just curious how does the wiring work ? Do i just connect to the motor from the brushless motor leads ?

Edit: Found out that i was using the wrong hex now im using the right one and got it working.
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Last edited by Ottomite; Jun 11, 2013 at 11:25 PM.
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Old Jun 13, 2013, 08:30 PM
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Joined May 2013
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More information

Love this hack, thank you very much for making the information available.

I would like to use this on a couple of wheelchair motors but I am struggling with the documentation provided. I have checked out the other brushless ESC conversion project in this thread to see if I can work out how to connect the ESC to the motor. Is someone able to take a photograph of how they have done it please? I notice on the other project, they are connecting to two of the poles but it seems this project solders the wires directly to the FETs.
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Old Jun 17, 2013, 01:51 AM
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Quote:
Originally Posted by Tengil View Post
What if using the 2 in 1 esc software together with a kk2 to make a Segway?
Should be possible.

Hardware maybe wiper motors from the scrapyard?

Unfortunately I must relay on you programing geniuses. ;-)
This is to lift this tread.
I still hope someone could be the first and show us how to make a segway using this and the KK2 control board.
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Old Jun 25, 2013, 05:00 PM
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United States, OR, Portland
Joined Dec 2011
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Quote:
Originally Posted by Copernicus552 View Post
Could you please show diagram of how to wire the motor connections to this ESC
I'm curious as well. I just flashed a Atmel based Hobbywing Pentium-6A without issue, but I'm not sure what's next.

Is it safe to use two of the original three motor leads, determining which leads to use by trial and error?
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Old Jul 09, 2013, 12:19 PM
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Germany, HB, Bremen
Joined Jun 2010
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I have flashed this ESC http://rctimer.com/index.php?gOo=goo...7&productname=


It seems to work on the 2 of the 3 BL outputs so I guess I don't need to solder between the mosfets.

I have one issue, the motor goes to full when the throttle is at approx 50% instead of 100... how do I calibrate the range?
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Old Jul 22, 2013, 09:46 PM
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Quote:
Originally Posted by Zen09 View Post
I have flashed this ESC http://rctimer.com/index.php?gOo=goo...7&productname=


It seems to work on the 2 of the 3 BL outputs so I guess I don't need to solder between the mosfets.

I have one issue, the motor goes to full when the throttle is at approx 50% instead of 100... how do I calibrate the range?
maybe change throttle in program


continues
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Old Jul 30, 2013, 04:50 PM
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Joined Jul 2013
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Hi all,

have just found this hack and am planning to use it on some RC timer 20a ESCs for a fighting robot. I was just wondering if the flashed ESCs failsafe or anything weird if the RC input signal goes over the 100% value? problems have occurred with other reflashed ESCs when using Spektrum DX6i with elevon mixing and additional mixing to get 100% throws.

Cheers

Dan
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Old Oct 22, 2013, 04:23 PM
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hey,

I flashed a RC timer 20a ESC but it never seemed to work correctly. is there any set-up work that needs to take place once its been flashed with the software? I was using the brushedV3 hex file. Any help would be greatly appreciated as its for a fighting robot and would not only be for me, but the UK fighting robot community as a whole.

Cheers!

dan
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Old Oct 22, 2013, 04:36 PM
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Quote:
Originally Posted by danjr1 View Post
hey,

I flashed a RC timer 20a ESC but it never seemed to work correctly. is there any set-up work that needs to take place once its been flashed with the software? I was using the brushedV3 hex file. Any help would be greatly appreciated as its for a fighting robot and would not only be for me, but the UK fighting robot community as a whole.

Cheers!

dan
you should use firmware here : https://launchpad.net/brushed

Buy esc Tunigy30a or 85a.
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Old Oct 22, 2013, 04:52 PM
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Joined Jul 2013
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Hey
That code won't work as the ESCs failsafe if the signal goes over 100%. We use the spektrum rc gear which has some funny mixing properties but we've managed to amend the code for the tz85a ESCs to compensate for this.

Cheers

Dan
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