Light on Devo 7e?

Is there a way to wire up the light on the front of the tx when the power switch is on?

it's been a long time now, but I just wired in a couple of green LEDs....

Of course! I have 3 smd red leds....
Look here:
www.rcgroups.com/forums/showthread.php?2189882-My-Devo-7E-mods
www.deviationtx.com/forum/6-general-disc...-those-leds-are-tiny

I'm a complete soldering n00b but I managed this one, the SMD leds are tiny but adding 2 red ones gives 6v of resistance which is perfect for the 4xAAs powering the 7E.

Thanks for the replies! In one post it said to run the positive to the black wire on the on/off switch (which I assumed was negative) and the negative to RF shield corner. Does this sound about right? Any chance anyone has a pic or diagram of how they wired them in? I already fried a fet on the board by mistake before and had it replaced professionally. Don't really wanna chance frying something else with lack of info. Anything on the lines of "Installing LED's for dummies" would be great lol.
Cheers!

Edit: The ones I was hoping to use, because I have them on hand, was spare blue ones I have for the Hubsan 107L. Can these be used in this application?

I'd say no, those LEDs are too big to fit into the available channel. You want SMD LEDs (they're about half the size of a grain of rice), I bought these because they were cheap on Amazon Prime and gave me many to screw up practice if needed -
www.amazon.com/gp/product/B01CUGAFEC/ref...05_s02?ie=UTF8&psc=1

The description you have is correct, positive to black on the switch, negative to the RF shield if you can get it to stick - I actually just have my ground stuck to the RF shield with electrical tape because I'm replacing the whole module with a 4-in-1 soon.

Thanks for the response! I have the 4in1 installed already so I have some nice solder pads on the top corners where the module used to be. About the wiring of the LED's.. would I wire each seperate with their own wires or wire them together with just 2 leads going to the connection points? Also, did you use hot glue or something of the sort to hold them in place? My original idea was to use one of these hubsan lights but just kinda leave it floating somewhere away from the area that would light up just to get the glow, but I'm not sure how well that would work either.. Thanks again for the help. Cheers!

I just wired 2 LEDs in series with a small piece of wire between them. I didn't use hot glue but in hindsight that would be a good idea to hold the whole LED assembly in place, in the link above you can see they used 30awg wire which was thin enough to run under the plastic channel, if I was doing this again I would probably do that but only had 24awg wire on hand. I built mine on the desk, using a CR2032 (3v) battery to test a single LED then 2x2032s stacked to test 2 LEDs in series.

Not sure how much space is in there for the LEDs, but a 5mm LED (like the ones you have) can always be sanded down quite a bit; that clear section is essentially an epoxy, you can grind most of it away and not have any effect whatsoever on it's abilities (apart from diffusing the output)

I have just done the 4 in 1 mod and was contemplating doing this but got sick of all the soldering I had to do. Anyway, did you guys put any resistors in?

No resisters for me, 2 of those SMD LEDs = 6v so no need AFAIK.

Chimera wrote: No resisters for me, 2 of those SMD LEDs = 6v so no need AFAIK.

Ahh yes, that would make sense lol. Thanks

Chimera wrote: No resisters for me, 2 of those SMD LEDs = 6v so no need AFAIK.

What about the people that run 3 of the small LED's?

ClittleJ wrote: What about the people that run 3 of the small LED's?

Simple LED Driver, aka fixed current circuit.
Most efficient way.

Or you connect the LEDs in a parallel circuit, current limited by a resistor.
That's quite a quick'n'dirty approach, though.

What is the voltage from the + on the switch?

Well I just got my led's in today.. glad I read this before I installed anything. Now Im worried about putting in the 3 small ones like I was planning. Was hard to tell from the pics but i didnt notice anyone using an extra circuit or resistors when adding the led's. So if Im only using 2 1206 SMD LED's its ok to just wire them right in? (I believe the voltage on them was 2.2-3v or something like that) and if I were to put 3 in series I would need a resistor or a circuit to power them? Little more complicated than I originally thought, may just put the project on hold till I get some more info.. don't want to fry another component, and Im kinda new to this whole world.

edit; I am using 4x Nimh 1.2V eneloops. The Tx usually sits around 5-5.5V whenever Im using it, so I wouldn't even have the required 6V you would get from 4 dry cells... very confused now.

I'm using 1.2v NIMH and it works fine with 2 LEDs but I don't think it would drive 3 in series. I assume the people using 3 in series are driving their Devo with a LiPO vs dry cells.

I'm using three 3mm LEDs in series from a 5v source on the processor board, and a 68 ohm resistor to ground. It's been working great for a couple years now.

I've wired a lot of LEDs and I won't install them without a resistor. http:LED.linear1.org has a great set of guides on LEDs.

Got it working! Thanks so much for the help! Was a little trickier than I thought to get them mounted. They look much better, ..and redder in person lol. I used the diffused red 1206 smd LED's.
Got a couple tips for the method I used, which worked pretty well.
Make the wire joining the 2 LED's the exact length so they sit right about in the square little slots in the channel on the buzzer piece that you remove with 2 screws. (looks like they were probably made for LED's..) the wire joining them will fold over the clear insert perfectly.
Snip a small triangular piece out of each edge of the plastic channel on the transmitter with snips (or grind it down a bit) to let the positive and negative wire have room on each side.
I used a little piece of rolled up "sticky tack" (the sticky clay stuff for hanging things on the wall) on each side and jammed it into the edges of the channel on the buzzer piece (where the LED's will be installed) to give the LED's something to sit on/stick too. Also when I put everything back together it kind of pressed the sticky tack to the perfect shape it needed to hold the LED's in place.
Anyway.. that's how I got it to work. There are probably much more efficient/easier ways to go about it but, it is what it is, and it works great for the time being!
Hope this helps someone, and thanks to everyone who helped me!
Cheers!

Deal57 wrote: I'm using three 3mm LEDs in series from a 5v source on the processor board, and a 68 ohm resistor to ground. It's been working great for a couple years now.

I've wired a lot of LEDs and I won't install them without a resistor. http:LED.linear1.org has a great set of guides on LEDs.

Uhhggg.. you think it's dangerous with this setup?
Would the LED's burn out or it could mess something else up?