RCCrawler Forums

Bart bender · 03-26-2007, 09:11 AM

Well changed it out for a 1/4 wat. Works for now. Fried my ESC so can't test it very well. Being a cheap ace didn't pay this time. The one I had in there must have been way to small.

Clodzilla · 04-02-2007, 08:28 PM

I have been trying really hard to get this to work, but it seems I am doing something wrong. Im trying to do the stage 1 modification with the 3 way switch. I want to use this so I can shift all 3 gears on the high lift

So far I can get the switch to move the servo for 1st and 2nd gear...but when I flick the switch all the way up from the middle position... I get nothing?

Heres what I have:

roktoy · 04-03-2007, 09:10 AM

I think you have it wired right from what I can tell.

You should measure 0V, ~2.5V, and 5V in the three positions at the switch center post.

Jay

Clodzilla · 04-03-2007, 06:52 PM

Ok I checked the volts at the center hole where the original switch was located and the volts look good...0v-2.5v-5v
Should the volts read 2.5v when the switch is in middle? because that is what I have got. Also should the servo move when the switch is flicked from it 2.5v center positon to the zero volt bottom position? Mine does not move.

Thanks

Clodzilla · 04-03-2007, 07:44 PM

Ok I think I figured it out! I had messed with the setting in my radio before the mod. So I put all the AUX settings back to a default position and now it works! Thanks for the help and such an awsome mod :-P

roktoy · 04-03-2007, 11:55 PM

Quote:

Originally Posted by Clodzilla

Ok I think I figured it out! I had messed with the setting in my radio before the mod. So I put all the AUX settings back to a default position and now it works! Thanks for the help and such an awsome mod :-P

Cool.....was about to mention that possibility.

Correct....should be 2.5V in center position.

Jay

Bart bender · 02-02-2008, 10:09 AM

What would it take to add EPA's for digital rear steer servos?

roktoy · 02-03-2008, 09:33 PM

Quote:

Originally Posted by Bart bender

What would it take to add EPA's for digital rear steer servos?

EPA can be set 0 to 150% on the AUX channel (3rd channel).
Jay

Bart bender · 02-04-2008, 02:55 PM

Thanks Jay. Guess I shoulda read the manual.

The Real Dogman · 02-10-2008, 10:37 PM

Hey Jay,, I need your help,

will this adapt to a 3 position switch?? For an Axial Tranny mounted dig set-up I am working on. If it would help you get motivated I will give you an Exclusive Veiwing of it!!

roktoy · 02-11-2008, 07:33 AM

Yes. We're using the switch to provide some voltage level (zero to 5V) to the microcontroller.
So, you can use a 2-position, 3-position, 15-position rotary switch, or a potentimeter (infinite
number of positions) to provide the various voltages. It's just with the switches you need to
provide resistors to set the voltages.

Jay

The Real Dogman · 02-12-2008, 05:54 PM

Hey Jay,

One more stupid Q. When you remove the 10k Resistor do I need to bridge the gap to complete the circuit? May have covered it somewhere but I read everything pretty close, but prolly missed it..

And it really doesn't matter if I am using the AM version, right??

Thanx!!

roktoy · 02-12-2008, 10:18 PM

Quote:

Originally Posted by The Real Dogman

Hey Jay,

One more stupid Q. When you remove the 10k Resistor do I need to bridge the gap to complete the circuit? May have covered it somewhere but I read everything pretty close, but prolly missed it..

And it really doesn't matter if I am using the AM version, right??

Thanx!!

Just remove the 10k - don't bridge the gap.

I have not been inside an AM one, but I'd bet they're designed the same.

Jay

The Real Dogman · 02-12-2008, 10:59 PM

Thank you Jay!!

I jumped off the bridge and did it!! I did not remove the 10k, yet. Everything seems to work well, I will go back in to remove the 10k and to set the trim pot so it accessible fom outside the case. Thank you for the write up!! I will get those pics of the Tranny mounted to you soon!! Works very well!! and if testing plays out well this weekend at our Comp I will post a build thread on the dig..

oh BTW, this does work on the AM version!!

Panchira! · 02-14-2008, 08:58 PM

just did this tonight! dam it works great heres some more info on the stuff you need as the switch goes.... SPDT center off (single pole, dual throw, centef off.----> ON-OFF-ON) no got to mount it to my r2d make some linkages then fine tune it!!!!! its a tight fit but works great!!!!!!

roktoy · 02-14-2008, 09:29 PM

Quote:

Originally Posted by Panchira!

just did this tonight! dam it works great heres some more info on the stuff you need as the switch goes.... SPDT center off (single pole, dual throw, centef off.----> ON-OFF-ON) no got to mount it to my r2d make some linkages then fine tune it!!!!! its a tight fit but works great!!!!!!

Good to hear and thanks for adding the switch info.
Jay

Panchira! · 02-14-2008, 10:14 PM

heres some pics:

open hole i drilled to close to the throttle trigger

my stealth pot mount, melted the pot case and the transmitter body back of transmitter

thanks for this roktoy!

heres everything i used:

1x 10k ohm 1/2 watt
1x 100k ohm trim potentiometer
1x SPDT center off micro
and bulk 22 guage wire.

its really nice how it works its kind of a trip

markw · 02-14-2008, 11:54 PM

I'm thinking 3 position for use with the punk rc rear steer controller. Or just convert my Super 8 to 2.4ghz and run with that. Dig would be nice in addition to rear steer.

roktoy · 02-15-2008, 08:47 AM

Quote:

Originally Posted by Panchira!

my stealth pot mount, melted the pot case and the transmitter body back of transmitter

Nicely done.
Jay

grommit327 · 02-28-2008, 01:33 PM

Question from a newbie and someone not to good with electrical stuff. Is it possible to wire this up for 3 position dig setup and use two momentary push buttons to achieve free wheel and locked rear with the servo? If there is what would the schematic look like for that setup? I am thinking that would be easier to use for dig than a toggle switch

04-02-2007, 08:28 PM	#62
Clodzilla Rock Stacker Join Date: Dec 2005 Location: In the woods Posts: 78	I have been trying really hard to get this to work, but it seems I am doing something wrong. Im trying to do the stage 1 modification with the 3 way switch. I want to use this so I can shift all 3 gears on the high lift So far I can get the switch to move the servo for 1st and 2nd gear...but when I flick the switch all the way up from the middle position... I get nothing? Heres what I have: Last edited by Clodzilla; 04-02-2007 at 09:32 PM.

02-12-2008, 05:54 PM	#72
The Real Dogman RCC Addict Join Date: Jun 2007 Location: Indian Village Pontiac Posts: 1,910	Hey Jay, One more stupid Q. When you remove the 10k Resistor do I need to bridge the gap to complete the circuit? May have covered it somewhere but I read everything pretty close, but prolly missed it.. And it really doesn't matter if I am using the AM version, right?? Thanx!! Last edited by The Real Dogman; 02-12-2008 at 06:37 PM.

02-14-2008, 10:14 PM	#77
Panchira! Pebble Pounder Join Date: Jan 2008 Location: Rancho Cucamonga Posts: 150	heres some pics: open hole i drilled to close to the throttle trigger my stealth pot mount, melted the pot case and the transmitter body back of transmitter thanks for this roktoy! heres everything i used: 1x 10k ohm 1/2 watt 1x 100k ohm trim potentiometer 1x SPDT center off micro and bulk 22 guage wire. its really nice how it works its kind of a trip Last edited by Panchira!; 02-14-2008 at 10:17 PM.

03-26-2007, 09:11 AM	#61
Bart bender I wanna be Dave Join Date: Jan 2006 Location: Iowa, the antirecreation state! Posts: 2,227	Well changed it out for a 1/4 wat. Works for now. Fried my ESC so can't test it very well. Being a cheap ace didn't pay this time. The one I had in there must have been way to small.

04-03-2007, 09:10 AM	#63
roktoy Dirt Addict Join Date: Jan 2004 Location: Stumblin' thru the parking lot of an invisible 7-Eleven Posts: 1,053	I think you have it wired right from what I can tell. You should measure 0V, ~2.5V, and 5V in the three positions at the switch center post. Jay

04-03-2007, 06:52 PM	#64
Clodzilla Rock Stacker Join Date: Dec 2005 Location: In the woods Posts: 78	Ok I checked the volts at the center hole where the original switch was located and the volts look good...0v-2.5v-5v Should the volts read 2.5v when the switch is in middle? because that is what I have got. Also should the servo move when the switch is flicked from it 2.5v center positon to the zero volt bottom position? Mine does not move. Thanks

04-03-2007, 07:44 PM	#65
Clodzilla Rock Stacker Join Date: Dec 2005 Location: In the woods Posts: 78	Ok I think I figured it out! I had messed with the setting in my radio before the mod. So I put all the AUX settings back to a default position and now it works! Thanks for the help and such an awsome mod :-P

02-02-2008, 10:09 AM	#67
Bart bender I wanna be Dave Join Date: Jan 2006 Location: Iowa, the antirecreation state! Posts: 2,227	What would it take to add EPA's for digital rear steer servos?

02-04-2008, 02:55 PM	#69
Bart bender I wanna be Dave Join Date: Jan 2006 Location: Iowa, the antirecreation state! Posts: 2,227	Thanks Jay. Guess I shoulda read the manual.

02-10-2008, 10:37 PM	#70
The Real Dogman RCC Addict Join Date: Jun 2007 Location: Indian Village Pontiac Posts: 1,910	Hey Jay,, I need your help, will this adapt to a 3 position switch?? For an Axial Tranny mounted dig set-up I am working on. If it would help you get motivated I will give you an Exclusive Veiwing of it!!

02-11-2008, 07:33 AM	#71
roktoy Dirt Addict Join Date: Jan 2004 Location: Stumblin' thru the parking lot of an invisible 7-Eleven Posts: 1,053	Yes. We're using the switch to provide some voltage level (zero to 5V) to the microcontroller. So, you can use a 2-position, 3-position, 15-position rotary switch, or a potentimeter (infinite number of positions) to provide the various voltages. It's just with the switches you need to provide resistors to set the voltages. Jay

02-12-2008, 10:59 PM	#74
The Real Dogman RCC Addict Join Date: Jun 2007 Location: Indian Village Pontiac Posts: 1,910	Thank you Jay!! I jumped off the bridge and did it!! I did not remove the 10k, yet. Everything seems to work well, I will go back in to remove the 10k and to set the trim pot so it accessible fom outside the case. Thank you for the write up!! I will get those pics of the Tranny mounted to you soon!! Works very well!! and if testing plays out well this weekend at our Comp I will post a build thread on the dig.. oh BTW, this does work on the AM version!!

02-14-2008, 08:58 PM	#75
Panchira! Pebble Pounder Join Date: Jan 2008 Location: Rancho Cucamonga Posts: 150	just did this tonight! dam it works great heres some more info on the stuff you need as the switch goes.... SPDT center off (single pole, dual throw, centef off.----> ON-OFF-ON) no got to mount it to my r2d make some linkages then fine tune it!!!!! its a tight fit but works great!!!!!!

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02-14-2008, 11:54 PM	#78
markw Newbie Join Date: Jan 2008 Location: Lakeside Posts: 12	I'm thinking 3 position for use with the punk rc rear steer controller. Or just convert my Super 8 to 2.4ghz and run with that. Dig would be nice in addition to rear steer.

02-28-2008, 01:33 PM	#80
grommit327 Newbie Join Date: Jan 2008 Location: Da Shoug, WA Posts: 46	Question from a newbie and someone not to good with electrical stuff. Is it possible to wire this up for 3 position dig setup and use two momentary push buttons to achieve free wheel and locked rear with the servo? If there is what would the schematic look like for that setup? I am thinking that would be easier to use for dig than a toggle switch

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Thread: MX-3 Independent Rear Steer Setup article added.