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Old Feb 01, 2004, 07:44 AM
Koichi Tanaka is offline
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Stewart,

The PCB pattern which can be downloaded just now was added to the homepage.

Koichi
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Old Feb 01, 2004, 07:56 AM
clipclop is offline
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Great thanks Koichi,
In your descrition you said you added .001 uf caps in parralel to the .047uf caps to get the full range of stick comands is this correct ?
If so additional pads could be added to the cct PCB to fit these
Stewart
Last edited by clipclop; Feb 01, 2004 at 08:02 AM.
Old Feb 01, 2004, 08:00 AM
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Stewart,

I use ceramic resonator for the 4MHz oscillation. In CR oscillation circuit, I think that a problem is in frequency stability.

Koichi
Old Feb 01, 2004, 08:04 AM
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I thought stability may be the isure with the RC idea , thanks for clearing it up for me
Stewart
Old Feb 01, 2004, 08:18 AM
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Stewart,

The change range of a pulse can be increased by adding the capacitor of small capacity in parallel with 0.047uF.

Koichi
Old Feb 02, 2004, 01:24 PM
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@clipclop
Thank you ! I've read the thread (and certainly followed the links..), but i've found nothing about a 4 channel IR-receiver. Does not matter .... I'll keep on searching....

@jberg
It's hard for me to measure my grammer and spelling...
I am german too ... Greetings from Essen NRW

--- Tanis ---
Old Feb 02, 2004, 08:17 PM
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Tanis,
The 4 ch is only a new developement by Koichi to drive his Linear actuators , I dont think there has been a PCB design posted for a 4ch IRX yet , Darkith has made up decode for a 4ch pic he has included a good text file describeing how to set the assy file befor loading it to the pic ie: transmitter type selection
also his code can be set for 3 actuators +1 motor or 2 actuators +2 motor output . Darkith also includes the pinout connections of the pic's in his text doc .
It shouldnt be to difficult from Darkths info to modify the 3ch IRX PCB for 4 ch .
Stewart
Heres a link to Darkiths decode : http://darkith.dyndns.org/~darkith/html/ir.shtml
Last edited by clipclop; Feb 02, 2004 at 08:20 PM.
Old Feb 02, 2004, 10:18 PM
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Koichi
The new TX is really nice. I like it.
Maybe someday we will see poeple leave the buttons on and there will be laser tag like games but with R/C airplanes. That would be wild.


Billy
Old Feb 03, 2004, 03:37 AM
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Basic radio information


If like me you are strugggling to get your head around the basics of radio control, I'm finding this article quite helpful. This has a fair level of detail, but seems to be well explained. Apologies to the experts here.
http://www.rchelibase.com/radio/.
Last edited by JohnnyB; Feb 03, 2004 at 03:44 AM.
Old Feb 03, 2004, 12:03 PM
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clipclop,
thank you again. That is the stuff i'm looking for ! The source is documented very well ( thanks to Darkiths too !!!), so i can do my own thing. I'll post my results here in this thread, as soon as i've finished it. Till now, i've only made the joysticks (removed the switches, enlarged the way of the sticks and removed auto-centering at one stick). My first PCB will be done on a Veroboard, but if it workes, i'll do an etched PCB.

Regards

--- Tanis ---
Old Feb 04, 2004, 10:10 PM
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New version of IR2 available. (v1.1)

By request, now you can have a 4 ch RX by using 2 8pin PICs together, perhaps piggybacking one on top of the other for compactness.

Also added 2 sample PCBs for 4 ch RX (2 ESC) using 16F630.

http://darkith.dyndns.org/~darkith/html/ir.shtml

Here's a pic of the 16F630 4 ch RX

D.
Old Feb 04, 2004, 10:14 PM
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Here's the bottom.

Bit dark, but it's late, and I should be catching some zzzzz's

Got some thin double-sided PCB from digikey. 0.005", s'very flexible...almost too delicate. Not sure of the weight, have really heavy wires on there right now. 14x13 mm.

Now to build the heli....

D.
Old Feb 04, 2004, 11:24 PM
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Darkith,
Thanks for the update , great work again .
Q? have you looked at the auto throttle channel setting that Andy Birket was working on ?
Stewart
Old Feb 05, 2004, 07:41 AM
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I read through the code. It just loops after powerup, waiting for any channel to go below or above a set threshold. This channel becomes the throttle channel. If the channel went high, he inverts the throttle. If the channel went low, normal throttle is used.

In theory, it wouldn't be a hard addition...

Should I consider that as a request?

D.
Old Feb 05, 2004, 08:05 AM
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Darkith,
iy would make transmitter matching a lot easier I think . The other thing is can signal be detected to ie if its inverted or not , if this can be done in code there would be no need to do any selections befor burning to pic .
Some of the comercial RX 's have this feature in there code .
I have 2 different TX's which both require Dif settings so I can only use current RX's with there respective TX's would be great not to have to match these .
Stewart


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