Convert Pendant Lamp to IKEA Tradfri Control
We had a Artika pendant lamp over our kitchen island since we bought the house. It is a curved LED lamp, metal with a glass cover. The model was an AMP 76. it has 5 LED modules, each putting out about 6000K of light. We often thought it was overly bright, and it was on the same switch as two other ceiling lamps. Needless to say that the amount of light was overkill.
Recently, at least one of the LED modules ended up failing. After very little (nil) response from the manufacturer for information about replacing the LED modules, I figured it would be nice to be able to somehow control the light separate from the other ceiling lights on the same circuit. Anyways, the LED modules are powered by a constant current DC source in the base that puts out less than 1/2 Amp at max 36VDC. The idea came up to replace the LED modules with equivalent LED strips, and replace the power supply with an IKEA Tradfri 10W, 24VDC power puck. I used this puck and its larger 30W version to power some under cabinet lighting and have been very pleased with it. They have a very low profile (about 1/2" thick) and fit perfect under the cabinets. They power the Stromlinje line of LED lights of various lengths in that application.
The other thing is that these are smarthome controlled. The plan is to replace the bulbs of the other two ceiling fixture with some IKEA smartbulbs, and be able to control each fixture on their own using the IKEA gateway. This would virtually make all the kitchen lighting automated and controllable via smartphone.
Anyways, the first part of the project is to upgrade the pendent light. The support wire is actually conductive, and is what is used to connect the supply in the base to the LED modules down in the pendant. The weighted bar is used to adjust the height of the pendant, and keep enough tension on the wire to keep it from kinking.
The power supply in the existing light, this will be replaced with the IKEA Tradfri 10W supply:
Here is what the failed LED module looks like, there are 5 of these connected in series with each other:
The LED module is approximately 2" in length.
Here is the Tradfri supply
and the LED strip I'm planning on using
The strip will be 1 meter, and will be able to cut every 2". It is a 24VDC COB LED strip with 3M backing, and emits about 4000K of light. It won't be as bright as the original light, but that was what my wife and I decided on, since as mentioned the light was too bright anyways. Along with the Tradfri, I'm hoping to be able to control dimming with it as well.
The first issue is that the IKEA supply, though outputs 24VDC, it has proprietary connections, so I will have to hack the supply and hard wire the wires that will supply the LED strips. I'm trying to use the original wiring as much as possible, since the light is supported by the wire. Luckily a gent has already hacked the 30W version to be able to modify the firmware of the zigbee processor to allow for more dimming control. I don't really care about that, but he did show some great pictures of the inners of the supply, and gives me a good idea on where to solder the 24V wiring. Here is his website: https://trmm.net/Ikea/
Off that green board to the right, with the EMI cover over the CPLD, there are two large solder spots for OUT +/- voltage.
Finally got the LED strip come in...ordered at the end of January, finally came in at the end of March. Anyways, outside of the dismal delivery timing, I connected the strip to a 24VDC supply and tested it to verify it worked:
It's a little brighter than anticipated, but that is the whole entire 1M strip lit up. I only need 5 small sections (which gives plenty of spare).
So the individual strips, once cut are the same size as the original modules (the LED strip is the top, old module below):
After installing the pieces and wiring them up, I connected a basic 24VDC supply to them and test out if the lights work:
Next was picking up the IKEA supply and control puck. Opening the supply and hard wiring the wiring to the points indicated:
And the video below is the first test with the IKEA setup:
Light now installed and working great.