LED Lamp Assistance

Components & Accessories LEDs
1

I am working on my first epoxy resin lamp project and plan to use a single LED. I am new to electronics and could use some assistance.

I am looking at using a 3W Aluminum PCB LED. I have watched the SparkFun videos on how to properly power the LED and wondering if my approach would be correct:

  1. As a power source I would use a 9VDC, 650mA (Barrel Jack) wall adaptor power supply.

  2. Two Possible Setups:

a. I would have a DC Barrel Jack Adapter – Female mounted on base of my lamp. From this adapter I would need to connect it to a FemtoBuck LED driver. OR

b. I would connect a Barrel Jack Power Switch to the power source and remove the Male end and solder the wires directly to the FemtoBuck, allowing for a On/Off switch.

  1. Wire the FemtoBuck to the LED

The base is going to be wood. I would heat shrink the FemtoBuck and secure it to the base with superglue. I would secure the LED to the wood base using heatsink compound.

Thank you for taking the time to read my post and I welcome any comments and advice.

2

Hi ZParsons!

Your plan sounds solid and I think it should work just fine. I would suggest connecting everything up just to make sure it’s working if you plan on potting the LED in resin, that way if you need to make adjustments you still have access to the LED.

I’d stick with putting a barrel jack on your base and either plugging the power supply into that, or you could put a barrel jack power switch in line. That give you flexibility to do both easily and if something should break, you don’t have to desolder anything.

3

That’s a great point regarding putting a barrel jack on the base to give me flexibility if something should break. I will draft up the placement of the barrel connector, FemtoBuck driver, and LED to give me an idea of my measurements. Thank you for the response!