Alternative ESC firmware (reflashing)

Re: Alternative ESC firmware (reflashing)

Postby ziss_dm » Mon Mar 19, 2012 11:49 pm

Hi Wishnu,

pwm_fast_200 - range 1100-1900us
pwm_fast_250 - range 1000-2000us

So, most likelly your transmitter was not able to generate 2000us pulses.

regards,
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Re: Alternative ESC firmware (reflashing)

Postby Hamburger » Tue Mar 20, 2012 1:34 pm

how to attach wires to blueseries 12A ESCs? Those have no pads and I cannot solder to the tqfp atmega8 pins directly (no appropriate tools and insufficient eyesight even with mag-glasses). I had hopes something like a socket type thing would exist that could be used - but came up empty.

I own 8 of these ESCs I want to use but cannot currently convert. Any advice how to proceed or any volunteers for a round of brewery produce?
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Re: Alternative ESC firmware (reflashing)

Postby LenzGr » Tue Mar 20, 2012 1:57 pm

Hamburger wrote:how to attach wires to blueseries 12A ESCs? Those have no pads and I cannot solder to the tqfp atmega8 pins directly (no appropriate tools and insufficient eyesight even with mag-glasses). I had hopes something like a socket type thing would exist that could be used - but came up empty.

This page on the OpenPilot Wiki lists a number of possible approaches. I like the one where they used modeling clay :)
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Re: Alternative ESC firmware (reflashing)

Postby ziss_dm » Wed Mar 21, 2012 1:00 pm

Hi Hamburger,

I have committed small change which allows you to adjust timing advance..

Code: Select all
#define    TIMING_ADV          0|1|2|3


I think, slightly increasing timing you can regain power loss, but probably in expense of efficiency.

regards,
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Re: Alternative ESC firmware (reflashing)

Postby Wishnu » Wed Mar 21, 2012 3:22 pm

Hellow ziss_dm,
can i somehow limit the range 1100-1700us instead of 1100-1900us?
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Re: Alternative ESC firmware (reflashing)

Postby Hamburger » Wed Mar 21, 2012 10:01 pm

LenzGr wrote:This page on the OpenPilot Wiki lists a number of possible approaches. I like the one where they used modeling clay :)


I built an adapter with modeling clay (tradename FIMO) and pogo pins for blueseries 20A P/N-fet with pads not in row. Flashing with the adapter works sometimes (1 out of 8). very cool.
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Re: Alternative ESC firmware (reflashing)

Postby Hamburger » Wed Mar 21, 2012 10:03 pm

ziss_dm wrote:I have committed small change which allows you to adjust timing advance..

Code: Select all
#define    TIMING_ADV          0|1|2|3


I think, slightly increasing timing you can regain power loss, but probably in expense of efficiency.

Hi ziss_dm,
will test and report back asap.
Thanks, Hamburger
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Re: Alternative ESC firmware (reflashing)

Postby ziss_dm » Thu Mar 22, 2012 12:56 am

Hi Wishnu,

can i somehow limit the range 1100-1700us instead of 1100-1900us?


Do you mean limit max power or scale power within narrow pulse range?

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Re: Alternative ESC firmware (reflashing)

Postby Wishnu » Thu Mar 22, 2012 5:39 am

I mean limit max power
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Re: Alternative ESC firmware (reflashing)

Postby ziss_dm » Thu Mar 22, 2012 9:46 pm

Hi Wishnu,

There is a way to limit max power (you need to modify <input>.inc or better to create your own one):
viewtopic.php?f=13&t=516&start=170#p5063

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