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Old Nov 04, 2012, 08:03 AM
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xavier3596, can you post a source code for you adc to ppm project please?
I'm familar with stm8 mcu's and interesting in building my own transmitter.
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Old Nov 04, 2012, 11:28 AM
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Quote:
Originally Posted by ivandevel View Post
xavier3596, can you post a source code for you adc to ppm project please?
I'm familar with stm8 mcu's and interesting in building my own transmitter.
Hello, i've posted the sources of xavier in page 1.

If you want mine : http://code.google.com/p/bracame-rc-...Fbranches%2Ftx.
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Old Nov 05, 2012, 06:45 AM
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bracame, i've succsessfully checked out your sourcecode and now ready to test it. Also I want to view an xavier sourcecode, but no sourcecode on his site... can you post an xavier version here?
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Old Nov 05, 2012, 12:59 PM
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Ok, here the souces of xavier, i've done a lot of upgrade !!

http://www.rcgroups.com/forums/showp...9&postcount=40
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Old Nov 05, 2012, 01:09 PM
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Quote:
Originally Posted by Bracame View Post
Ok, here the souces of xavier, i've done a lot of upgrade !!

http://www.rcgroups.com/forums/showp...9&postcount=40
bracame, thanks a lot! your code seems to be more interesting! i'll make a graphic lcd to it... (nokia 1100). Also i think, it's possible to run your code on STM8S003 (the lowest price MCU on market now) - i'll try.

P.S. I've analysed powering of 2.4 GHz RF side of the transmitter and found, that 5V supply is never uses directly. It's converting to 3V3 by the LDO on 2.4 GHz RF board and then 3V3 powers all RF stages. So, all RF side working on 3V3! It gives a great ability to convert all transmitter system to 1S LiPo power source! Also, an STM8Sxxx can work at 3V3 voltages and below. Also i can integrate a single IC charger LTC4053 to charge 1S Lipoly. This is great!
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Last edited by ivandevel; Nov 05, 2012 at 01:17 PM.
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Old Nov 05, 2012, 01:25 PM
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Great ! 1S lipo. I use 2S for my corona CT8Z transmiter, witch RF have you ?
Have fun with my sources.
Tell me for help, the comment in sources are in French.
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Last edited by Bracame; Nov 05, 2012 at 02:48 PM.
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Old Nov 09, 2012, 02:27 PM
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Bracame, can you provide a schematic of all connections to STM8, please ?
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Old Nov 09, 2012, 02:43 PM
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I'll try to do this. Have you photo of your work ? I want to see it. For the pin (in -out) there is a pdf in source/wiki on google code.

Tell me : who you are ? A Diy man or a manufacturer ? (you have no profil)

I'll do a handmade schematic later.

You are the first person (of the www word) ho have interest for this project, I wonder why ...
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Old Nov 10, 2012, 04:17 AM
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I'm a developer on "not too small" company )). I'm interesting in this project for hobby purposes. I want to move all TX system to 1S LiPoly and lopower STM8L MCU and (maybe) develop an USB attachable transmitter on STM32. All depends on my busy.
1) Do I need to preload enything by xavier's .py script to eeprom on your project?
2) Also i can see all of connections from source(ADC channels is easy), but it's difficut to understand french names of the switches - can ou explain a functions of the switches?.
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Last edited by ivandevel; Nov 10, 2012 at 04:48 AM.
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Old Nov 10, 2012, 11:28 AM
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You don't need to preload the stm.

The "entree TOR" are input from switch 3 positions (4 axis stick + 2 pots + 2 "entree TOR" : 8 input)
The "touche" are the menu navigation µswitchs
"secu moteur" is the switch for stoping the engine.
"phase" to change phase !
"sortie ppm" output to tx
"bip buzzer" output to activate exernal buzzer
The 4 "trim manches" uses trim+ and trim - for there +5v (multiplexage), I use only 4 inputs to check the 8 µswitch of trim
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Old Nov 10, 2012, 12:09 PM
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sorry, can you provide shematic anyway?

1) Do not understand a TOR - whats this? potentiometer on ADC channel or switch? (on sources i saw only 6 ADC channels maintaining)
2) 4 trim machines - what's this?
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Old Nov 10, 2012, 12:21 PM
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In French, "TOR" means "Tout Ou Rien", usually it's an ON/OFF switch. I think a three positions TOR could be an ON/OFF/ON switch.

"Trim Manches" means "Stick-Trim".
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Old Nov 10, 2012, 02:06 PM
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Salut et merci JPP !
A little shematic is in the wiki page !
I hope it'll be clear !
There are 7 ADC : stick
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Old Nov 10, 2012, 02:07 PM
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Sorry ....
4 adc for stick
2 for pots
1 for battrery check
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Old Nov 13, 2012, 12:02 PM
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What news ?
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