TOPIC:

i am thinking of rigging up some LED lights on the front of my grasshopper.
i would like to know, as it now has a Mitronics ESC with a built in BEC there is now a spare connector from the receiver box with a red and black wire in it.
with everything connected and switched on, will that plug supply 7.2v to power the LED's or is it purely voltage "in" which supplied the receiver before the BEC was fitted?
thanks in advance

can you post a picture of the receiver never saw one that has a connectorwire coming out of it.

if you were to use something like this LED kit than you wont need that one.

just take care some 2.4 ghz apparently dont work. no problem with my spectrums dx3e and dx3c though

I'd never thought about that approach to powering LEDs & didn't know one way or the other, so lashed up a quick test ...

If memory serves, your 'Hopper RX is an ARC-227 ... I don't have one of those, but I just tried it on a ARB (pre-BEC) and an AR-227FE (with BEC) & both gave the same result - the "BATT" pins on the RX give out what's being put in by the ESC on the "CH. 2" pins - which from the Mtroniks line is nominally 4.8v ... I got 4.99v & 4.97 - 4.98v, but I guess there's some tolerance on the ESC output ...

So yes, there are some volts coming out on those pins, but no, it's not full battery power ... which is neither good or bad, you just need to take it into account for the LEDs

Nearly all of the rx on the market today deliver 5V out, so if you have a spare output these works fine for LED's

I use this method on allmost all of my rc's


And as a tip, if you gonna buy a servo for Clod etc, you'll need a powerfull servo to turn the wheels properly.
If the package of the servo says f.eks 17kg, it will never deliver that on your rig, but the spec it is rated at 4.8V..

the RX on the hopper is indeed a ARC-227, the acoms on my boat is an ARB-227.
the difference is the ARC has wires coming out of it with plugs on the end whereas the ARB has sockets in it to plug the connectors in.
here is the ARC on the hopper,

i have connected it all up and switched it on and i do indeed have 4.94 volts at the plug from the RX. i had an old battery pack with the correct plug to fit so i have chopped that off to splice in the wires from the LED's.
i have ordered some super white 20000mcd 3mm led's with 5v resistors so cant wait to get them and start tinkering

20,000mCd in a 3mm LED? Blimey ... I hope they come with an appropriate warning label, something like "Caution: Do not look into LED with remaining eye"

well that is what the listing states but i know you can never trust them to be totally accurate in their descriptions!
www.ebay.co.uk/...605wt_1054

i have put led lights on my Wild one.
it is very easy all you need to do is:

1-find out which is positive and negative on your reciever positive should be in the middle
2-get an old servo lead and cut of the signal wire(usually white)
3-get a good sized switch and find somewhere to put it. mabey where the original switch used to be if it was a mechanical speedo
4-connect it in series to the servo lead but not to the other side. + switch LED -
5-connect the LEDS in parallel
6-put the positive pin of the led onto positive and the negative pin on negative DON'T GET MIXED UP OR IT WON'T WORK
7-put them in your choice of housing
AND DONE

to turn the leds on using this, you will have to click the switch, you can't use your transmitter

With your esc, it should put out around 4 volts on the plug which goes into your reciever. all of the power leads connected to your reciever are in parralel so they get the same voltage and you can plug the leds into any remaining spot on the reciever.
the leds i use for my wild one are from old solar lights and work really well
hope this helps:)

next question.......how and where?
thinking of trying to install them in the original headlights but not sure how.
or i could fit them in the front of the chassis, just under the front of the body but then they would be at an angle and not point forwards.
Hmmmmmmmm decisions decisions