LED Lighting control?

[Si Goodchild]

Guys,

Is it possible to switch on an LED via a servo channel? I'd like to put a super-bright (but low power consumption at 6v) LED in the tail pipe of my EDF Jet as a sort of "glow" or "afterburner" effect when high throttle settings are used.

Any ideas how this can be done without excessive expense?

Si

[xygax]

Of course its easy..... Pic12F675.... and an LED.... little bit of software to measure the pulse width and turn on a LED if above a preset level....

I have just finished one that has six diferent outputs depending on the position of the chanel programed by two switches on a 14Mz.... a simpler one is called an LMA.... (lost model alarm) drive it from the throttle channel and fit an led instead of a beeper....

Steve

[heliward0]

Of course its easy..... Pic12F675.... and an LED.... little bit of software to measure the pulse width and turn on a LED if above a preset level....

I have just finished one that has six diferent outputs depending on the position of the chanel programed by two switches on a 14Mz.... a simpler one is called an LMA.... (lost model alarm) drive it from the throttle channel and fit an led instead of a beeper....

Steve

easy see!!! lol..????

[Si Goodchild]

pic1267...what! You can tell my degree was in mechanical engineering!

Like the idea of the LMA though!

[xygax]

ok its a baby micro... if i can find one i will solder a led and servo lead on it.... after i've programmed it for you...

Steve

[SadSack]

12F675 I/P 8 pin DIP PIC Micro PIC12F675 Microchip on eBay (end time 20-Sep-09 18:07:49 BST)

if that helps

[xygax]

I have some here burried under 629's and 627's.. but i think they are all SOIC so soldering wires on is interesting....

Steve

[SadSack]

I have some here burried under 629's and 627's.. but i think they are all SOIC so soldering wires on is interesting....

Steve

there easy <g>

[xygax]

dont i am currently using the 100p TQfp's and fitting tehm by hand is a real pain...

[SadSack]

8P be easy then lol
32tqf atmega best i can do...2mins best time oh and working

Pain to program with out socket ;( takes longer

[xygax]

12F675 based Lost Model Alarm

Activation under command

The LMA can be configured to monitor a receiver channel and to activate the alarm if the servo position on the channel is above, or below, a particular setting. In order to activate the alarm the servo must be in the position for at least 250ms.
This facility is useful for users with a spare channel, or a channel that is not normally set beyond a particular point. The purpose is that when a model is lost, but still probably within range, the LMA can be triggered without either waiting for the time based activation or loss of signal activation. This stops servos etc. from flapping around when there is no receiver signal and possibly damaging the aircraft more, or using valuable battery power.
The command activation point may be either preset in the software or configured into the LMA during operation and is easy to alter at any time.


Have a read its simple to make ... it will do what you need

Steve

[Andy from Sandy]

You can get solid state switches that plug into the rx. Here is an example.

RC Switch Interfaces

[Si Goodchild]

Many thanks for the suggestions - I'll take a print out and read in the bath tonight!