How To Make an Illuminated LED Eye Loupe

Step 4 Soldering the PCB

Mark out 8 equally spaced positions on the annular PCB and solder the LED-Resistor pair as shown in the photograph. Before attempting to solder the component, it is a good idea to tin the location with solder. This will allow the component to be soldered with a minimum of fuss and without too much heating of the components. Solder all the 8 LED-resistor pairs.

After you solder each pair, test that the LED lights up with the help of a digital multimeter (diode test mode) so you are sure that soldering hasnt damaged the LED.

Comments

[acelegna]

hi there...im trying to do a very similar thing BUT i have the "bulb" leds with the legs instead of the square ones you're using. My question is: can i solder them the same way you're doing? (bend the legs ontop of the copper traces and solder).....or do i have to flip the curcuit board around, drill small holes and insert the LEDs and bend the legs towards the traces on the "bottom side"? Great job by the way :)

[Gadre]

Sure. I just did a normal LED version for you. It was on my mind for a long time anyway. Sorry, the image quality is not that good as its taken with a phone camera.. Hope this helps.. -Dhananjay Gadre

[bjepson]

 I really like the way you prop up the LEDs with the resistors. I'll have to remember that trick.

[Gadre]

Thanks Brian! I am glad you noticed.