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Constructing the Universal LED Reading Light

 

In this project, I will be constructing a Universal Reading Light. I call it "Universal" as it can be built with several options, including two different mounting options; flush and Shadow Box. For a comprehensive set of build instructions, please download them from the PDF icon to the right. The project documentation consists of the PDF file, this webpage, and associated videos.

 

I wanted to replace the light fixture over my recliner in the RV as it was a bit difficult to turn on and off (at least for my height-challenged wife). You had to lean over the recliner to reach the on-off switch, and the light was not pin-point like the typical reading light.

The RV uses a Facon "Pancake" style fixture (DDS01-008), and my goal was to replace that fixture with one with the same mounting hole location (or larger), so the holes would not show.

 

I had considered using the AP-Products 005-06001037 Europa Aircraft-style dual reading light that I used in my motorhome cab console project, but the size was too small to cover up the existing holes. And I did want to add a dimmer and RF remote control (On-Off), and there was no convenient location in the fixture for these items.

I then ran across several tiny LED light fixtures that would work for a spotlight, and decided custom designing a base to mount them on was the way to go... and thus, this project was conceived.

 


Constructing the Universal RV Reading Light

 

Option
Description
Economy
Minimum component and cost version.
Funcitonally equivalent to the Base version.
Base
Components required regardless of option
Shadow Box
Standoff for Shadow Box look
Halo
Accent lighting (requires Shadow Box option)
Remote
Adds remote control

For the ECONOMY version, do not use the Bill of Materials shown here. Since the Economy version is so different, there is a Bill of Materials in the document for that version only. This is done so that you do not unnecessarily order the incorrect items.

 

Bill of Materials
Do not use for Economy Version

Item
Description
Option
Part Number
QTY
Source
Aluminum Panel
Mounting Panel
Base
LP-1
1
Template Location
LED Fixture
Mini Spot light
Base
Generic Shenzhen Marketplace
2
Note 3
Rocker Switch
SPDT ON-OFF-ON
Base
GRS-4013A-1300
1
DigiKey.Com
Knob
Silver 6.35mm Shaft
Base
A-2850
1
TaydaElectronics.Com
Indicator LED
LED Assembly
Base
67-1190-ND
1
DigiKey.Com
Resistor 1K
1K 1/4W Carbon Film
Base
A-2123
1
TaydaElectronics.Com
M3 Screw & Nut
M3 x 8mm
Base
Note 6
4
Local Purchase
M3 Screw
M3 x 5mm
Base
Note 6
2
Local Purchase
M3 Washer
M3 x 0.5mm
Base
Nylon Note 6
6
Local Purchase
M3 Standoff
M3 x 10mm
Base
A-1242
2
TaydaElectronics.Com
Dimmer Module
LED Supply Driver/Dimmer
Base
3021-D-E-350
1
DigiKey.Com (Note 1)
Potentiometer
PCB/Panel Mount
Base
Alpha RD901F-40-15R1-B5K
1
TaydaElectronics.Com (Note 2)
Circuit Board
Main Board
Base
05DRbJKc V2.3
1 (Note 4)
OSHPark.Com
Capacitor
Electrolytic 220uF/50V
Base
EEU-FS1H221LB
1
DigiKey.Com
TVS Diode
17V 600W
Base
P4KE20A
1
DigiKey.Com
Fuse
2A
Base
0251002.MXL
1
DigiKey.Com
Connector
2P Male Wafer-Right Angle
Base
A-785
Base
TaydaElectronics.Com
Connector
Wafer Female
Base
A-794
1
TaydaElectronics.Com
Connector Pins
Wafer Pins
Base
A-803
4 (minimum)
TaydaElectronics.Com
Standoff
1" Glass Standoff
Shadow Box
Generic
4
Amazon.Com
Circuit Board
Halo-Long
Halo
YisK2ECP V1.2
2 (Note 4)
OSHPark.Com
Circuit Board
Halo-Short
Halo
eGADfwxo V1.2
2 (Note 4)
OSHPark.Com
LED
Halo LED
Halo
A-1188
12
TaydaElecronics.Com
Resistor
4.7K Ohm 1206
Halo
RMCF1206FT4K70 (Note 5)
12
DigiKey.Com
Header Pins
2MM Male Header
Remote
A-1298
1
TaydaElectronics.Com
Remote
RX + TX
Remote
Generic
1
Amazon.Com
Circuit Board
Halo-Switch
Halo + Remote
oaGoFpAd V1.0
1 (Note 4)
OSHPark.Com
Bracket
Right Angle Bracket
Halo + Remote
Keystone 612
2
DigiKey.Com
Slide Switch
SPDT (ON-OFF)
Halo + Remote
A-5111
1
TaydaElectronics.Com
Connector
2P Male Wafer-Straight
Halo+Remote
A-776
1
TaydaElectronics.Com

 

Notes:

  1. Also available from LED Supply (perhaps for a lower price - search 3021-D-E-350)
  2. Alternate Logarimithic Potentiometer (RD901F-40-15R1-A5K).
  3. Select LED fixture as shown below.
  4. Minimum order quantity from OSHPark is 3 boards.
  5. See Chart 1 below.
  6. Local Purchase: Recommend bulk purchase of hardware kits.

Optional Hardware

 

 

Selecting the LED fixture.


LED Type 1

Characteristics:

Power: 1W
LED: 10V
Driver: Resistor
Modification required: Yes
Remove Resistor, Replace LED

Wiring:
Parallel: Yes
Series: After Modification


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LED Type 2

Characteristics:

Power: 1W
LED: 10V
Driver: Resistor
Modification required: Yes
Remove Resistor, Replace LED

Wiring:
Parallel: Yes
Series: After Modification


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LED Type 3

Characteristics:

Power: 1W
LED: 3V
Driver: External
Modification required: No
 

Wiring:
Parallel: Yes
Series: Yes


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LED Type 4

Characteristics:

Power: 1W
LED: 3V
Driver: External
Modification required: No
 

Wiring:
Parallel: Yes
Series:Yes


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All of the above fixtures have been tested with the LED Supply dimmer/driver. The modifications are shown below:

 


Light Selection Primer

 

(If Required)

 

 

The light plate, if ordered from the template LP-1 from my Templates Page, will have four 0.19Dia holes for using up to number 10 screws. If the shadowbox version is built, you will need to enlarge those holes to 19/64" Dia. for the standoffs to fit. This can either be done with a drill or reaming tool. Alternatively, you may modify the LP-1 plate template after downloading to the proper hole size for your mounting configuration.

 

Construction

 

Construction details are found in the documentation PDF you can download from the link above, or to the right. While the project itself is not complicated, the several available options might be a bit confusing at first - so I recommended reading everything, including the PDF, the webpages for this project and the videos prior to ordering or building anything.

Then read everything again!

 


Original concept drawing of the design.

 

Optional Halo

 


Original concept drawing of the Halo option.

 

Since the Halo is intended to be a night-light, it should be dimmed. The chart below provides optional values for the current limiting resistor required for different brightness. Select the resistor desired (12 are required). If in doubt, use 4.7K Ohm resistors that I used.

Halo LED Resistor Value (12VDC)
Resistor
Current
Percent
Brightness
430 Ohm
21mA
100%
560 Ohm
15mA
92%
1K Ohm
10mA
80%
2.2K Ohm
4.5mA
65%
3.3K Ohm
3mA
40%
4.7K Ohm
2mA
30%
6.8K Ohm
1.5mA
25%
10K Ohm
1mA
20%
22K Ohm
0.5mA
15%
33K Ohm
0.3mA
10%

Chart 1

 

 

 

 


Installation Video

 


 

"Wood" Base Option

 

After a few months of use, the light just did not look asthetic. So we decided to ditch the Halo option and to add a "wood " base, actually 3D printed from PLA Filament having 20% wood fibers. The wood filament does indeed look like wood, and can be sanded and stained. However, only sand by hand as machine sanders can melt the plastic. And the material will only accept about one coat of stain per 24hr period. The good news though is the result is a shiny wood look without having to apply any varnish (which you will want to do if you want a semi-gloss look).

This option is not compatible with the Halo option so it must be removed. Also, no need to enlarge the mounting holes in the aluminum panel. The .STL file template to 3D print the base can be found HERE.

 


Upgrade Video

 

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Last reviewed and/or updated Sep 15, 2025