Simple RF M4 Board

[fletch3d]

Hello,

I just received the SImple RF M4 Board and it is not working at all. I have tested the current through the board and I am not getting any voltage at all. I have attached a 7.4 vdc to the board (See attached photo). I have tested the wiring outside the board itself and it all works perfectly (See attached). I have tested the switch pressing every button on the FOB and checking each voltage out of the switch and still there is nothing. Not sure what is the deal. Help.

Well, I tried to upload the images of the switch, but it won't let me.. NOW WHAT??

[fletch3d]

Wired to Switch

wired.jpg (295.68 KiB) Viewed 2014 times

Power to switch

power switch.jpg (240.07 KiB) Viewed 2014 times

Wired to Switch

wired.jpg (295.68 KiB) Viewed 2014 times

[adafruit_support_bill]

What is the circuit between the receiver and the LED?
In any case, the output of the receiver pins is only about 20mA - enough to drive a 5mm led or a small relay. It will not put out the 300mA or so you need to drive a high-powered led like that.

[fletch3d]

OK.. I was told that it would output enough to drive these LEDS

luminous flux: 20-30LM
Forward voltage: 3.2-3.8V
Forward current: 350mA
Wave length: 460-470nm
View angle: 140 degree

The diver that I have is to drop the current

Input Voltage AC/DC12V or 24V
Output Current: 320-350mA
Can drive 1pcs 1W power LED
High efficiency

Application
MR16 driver
Flashlight driver
Backlight driver
Power LED which have only small space to install

SO this board will not work for what I am trying to do? I need to drive 6 of these 1W LEDs

Thanks
Chris

[adafruit_support_bill]

It definitely won't drive them directly. You could connect the receiver outputs to these to drive the leds: http://www.adafruit.com/products/355

[fletch3d]

Ok great. Do I need 1 for each led? Or do I use 1 to drive the voltage to the drivers? How would the wiring look for me? Thank you for all your help. My led voltage is 2.5 to 3.5 volts and I am using a 7.4 v battery to power the receiver and the leds. The driver was used to drop the 7.4v down to 350ma.

I still need a working rf receiver.. so what do I do about the one I received and is not working?

Chris

[adafruit_support_bill]

You would need one for each led. This diagram shows driving them from an Arduino. They will work equally well driven from the pins of the receiver. http://ladyada.net/make/bedazzler/make.html
These are "low-side" drivers. So connect the positive terminal of your constant current driver to the positive terminal of the power supply. Then connect the negative terminal to the output of the MOSFET and tie all grounds together.

I still need a working rf receiver.. so what do I do about the one I received and is not working?

Contact [email protected] with a link to this thread and ask for a replacement RF M4 receiver.

[fletch3d]

Do I need to be concerned about static with these?

[adafruit_support_bill]

Do I need to be concerned about static with these?

Once they are in a circuit they should be fine. But use basic precautions when handling the loose chips.

[fletch3d]

Can you tell me if I am close on this Diagram?

Is this close?

20130410_103016.jpg (294.68 KiB) Viewed 1908 times

[adafruit_support_bill]

That looks good. Although I think I misunderstood you earlier. If all the LEDs are to be controlled by one reciever pin, then you only need one MOSFET.

[fletch3d]

That is too funny. I just ordered 8 of the mosfets from you guys today. A little overkill. Does that mean that I don't need a driver for each LED? Can I get away with one?

[adafruit_support_bill]

Does that mean that I don't need a driver for each LED? Can I get away with one?

From the specs you posted earlier, it looks like they can only handle 1W, so you would need one per LED.

[fletch3d]

That is what I thought. Thank you again.

[fletch3d]

When Using the MOSFET with this setup, with the output pin opening the gate by depressing the button and lighting the LED, WHAT will make the gate close? Will the releasing of the button on the key FOB and signal from the pin drain the current off the gate fast enough to make the LED go out when you release the Key FOB button associated with the output pin?

If not, what is it that I need to do this? or what is the connection that I need to make on the diagram?

MOSFET

20130412_103939.jpg (293.39 KiB) Viewed 1840 times

Thanks
Chris