who have built FleaESC? need help

[salat]

Hello!
I'm going to assembly one using PCB from Thomas. But I am not sure about exact schematics and components values. Help please.
Thank you,
Kostya

[Chippie]

There's some info here: http://www.flyelectric.ukgateway.net/avr_ff_timer.htm
and here:
http://www.rcgroups.com/forums/showthread.php?t=890041

Should help you get started, may be easier to contact some of the posters off line

[rich smith]

These threads deal with David Theunissens conversion for the Turnigy 6a ESC which does not run on Bernhards Flea controller PCB.

Try the original:

http://home.versanet.de/~b-konze/blmc_flea/blmc_en.htm




There's some info here: http://www.flyelectric.ukgateway.net/avr_ff_timer.htm
and here:
http://www.rcgroups.com/forums/showthread.php?t=890041

Should help you get started, may be easier to contact some of the posters off line

[Chippie]

These threads deal with David Theunissens conversion for the Turnigy 6a ESC which does not run on Bernhards Flea controller PCB.

Try the original:

http://home.versanet.de/~b-konze/blmc_flea/blmc_en.htm

I was only trying to help..... :rolleyes:

[David T]

Kostya, Some advice in case you don't already know... The software/program has to be compatible with / be intended for the chosen board layout. FET switching, zero-crossing detection, voltage and current measurement, etc can all be affected by different schematics. I'm not familiar with the 'Thomas' PCB. You either need his software or check/modify the Flea program to match it.

The version I modified ('flyelectric' link Chippie provided) may still be helpful because it taught me how ESC's work and I documented many of my learnings in the source code.
Regards, David.

[Ivan2280]

Send it to me and i assembly it for you for free.No problem.Ivan :)

[salat]

My board is from here: http://www.neodyme-magneten.de/shop/catalog/product_info.php/products_id/276
http://www.neodyme-magneten.de/shop/catalog/images/nano.jpg

[TheSteve]

Have you tried sending a PM to Nanofreak or Quax?

[rich smith]

I was only trying to help..... :rolleyes:

Me too :)

Chippie, it's a good thing we have people like you here. In fact IMO it would be better for Salat to put the Flea boards aside for now and instead pursue your links because it's potentially easier & less costly.

Although I personally think it's better to post than PM because maybe get help from more people and also help more people.

[TheSteve]

The Flea is worth building, its lighter then the Turnigy and works extremely well.
I have built 4 of them and use 2 daily. I didn't use all of the exact parts Quax/Nanofreak used though.

[rich smith]

Didn't work out quite so well for me. I bought a couple of the same boards as Salat. Took me two months, weighed MORE than Turningy, cost 3x as much, and didn't work. I know it's a great design and Quax is a genius but it's the shopping that kills me. Nobody seems to have the right tantalums, FETs, or resistor values when I need 'em. Naturally they come back in stock the day after I abandon the project. Not so good at SMD assy either.

May have to get back to them if I can't get Davids Turnigy code working.

Those Turnigy are pretty cool. Throttle calibration, lost plane beep, current limiting, work with all motors, BEC, and you can enable/disable LVC (critical for my app). The 1g "ebay" unit is pretty amazing too. And those 2g motors! Specially considering cost of this stuff couple years ago. Great things happening these days.



The Flea is worth building, its lighter then the Turnigy and works extremely well.
I have built 4 of them and use 2 daily. I didn't use all of the exact parts Quax/Nanofreak used though.

[TheSteve]

If I can help with the Flea's let me know. You don't need to use the exact parts listed in many cases. The only really important ones are the feedback resistors and those pretty easy to get values. There are a few other types of fets that will work but the 4562s are the best. I didn't install the zener diode (there is no point). I am using a 10 ohm resistor for power filtering and I picked out the best capacitors for the job.
When programming don't bother setting the low voltage brownout fuse to 2.7 volts as that can still be too much and you're better off with no fuse set. Now if the Flea is built with a Mega88v instead of the Mega8l then you can set it to 1.8 volt brownout.
The Flea should be over half a gram lighter then the Turnigy. Its my lightest ESC other then the 1 gram 3 amp model which is 0.42 grams with all wiring removed.

Here are links to some pictures:
http://www.rcgroups.com/forums/attachment.php?attachmentid=1967590
http://www.rcgroups.com/forums/attachment.php?attachmentid=1933999
http://www.rcgroups.com/forums/attachment.php?attachmentid=1934000

I didn't have a power LED installed in the bottom two pictures. Any 0603 or 0805 size smt LED can be subbed in place of the less common package.

[salat]

If I can help with the Flea's let me know. You don't need to use the exact parts listed in many cases. The only really important ones are the feedback resistors and those pretty easy to get values. There are a few other types of fets that will work but the 4562s are the best. I didn't install the zener diode (there is no point). I am using a 10 ohm resistor for power filtering and I picked out the best capacitors for the job.
When programming don't bother setting the low voltage brownout fuse to 2.7 volts as that can still be too much and you're better off with no fuse set. Now if the Flea is built with a Mega88v instead of the Mega8l then you can set it to 1.8 volt brownout.
The Flea should be over half a gram lighter then the Turnigy. Its my lightest ESC other then the 1 gram 3 amp model which is 0.42 grams with all wiring removed.

Here are links to some pictures:
http://www.rcgroups.com/forums/attachment.php?attachmentid=1967590
http://www.rcgroups.com/forums/attachment.php?attachmentid=1933999
http://www.rcgroups.com/forums/attachment.php?attachmentid=1934000

I didn't have a power LED installed in the bottom two pictures. Any 0603 or 0805 size smt LED can be subbed in place of the less common package.

Hello Steve!
Can you please post here schematics you used (I found couple of them and not sure which one is good).
Also I'm looking from simplest programmer schematics (parallel port?).
I have Mega8l8s and Vishay 4562s.
Thank you,
Kostya

[Chippie]

Kostya,

There are numerous circuits on the web for programmers,

have look at the one for ponyprog....

http://www.lancos.com/prog.html

There's a desription of the hardware along with the soft for programming

[rich smith]

Steve,

I am thinking of giving the Flea another try. Where did you buy the 4562s? Can you tell me what other FETs are pinout compatible too? Maybe I have some in my "Box 'O FETs". I bought just about every SMD FET Digi-Key has but never did all the PDFs.

My stripped-down Turnigy ended up lighter than Flea. MLF weighs fraction of QFP and I used all Quax parts. My SMD soldering ain't pretty either. Can't compare with stock Turnigy anyway which has more features and is off-the-shelf vs. DIY. The 3a ESC is more comparable to Flea and is off-the-shelf but no source.

Your 1g 3a ESC review in the Walkera thread was excellent and that's what prompted me to get some to play with. Thanks.

-Rich




If I can help with the Flea's let me know. You don't need to use the exact parts listed in many cases. The only really important ones are the feedback resistors and those pretty easy to get values. There are a few other types of fets that will work but the 4562s are the best. I didn't install the zener diode (there is no point). I am using a 10 ohm resistor for power filtering and I picked out the best capacitors for the job.
When programming don't bother setting the low voltage brownout fuse to 2.7 volts as that can still be too much and you're better off with no fuse set. Now if the Flea is built with a Mega88v instead of the Mega8l then you can set it to 1.8 volt brownout.
The Flea should be over half a gram lighter then the Turnigy. Its my lightest ESC other then the 1 gram 3 amp model which is 0.42 grams with all wiring removed.

Here are links to some pictures:
http://www.rcgroups.com/forums/attachment.php?attachmentid=1967590
http://www.rcgroups.com/forums/attachment.php?attachmentid=1933999
http://www.rcgroups.com/forums/attachment.php?attachmentid=1934000

I didn't have a power LED installed in the bottom two pictures. Any 0603 or 0805 size smt LED can be subbed in place of the less common package.