TM1812 IC Programmable LED Strips

The main difference is the control grouping and voltage. TM1812 is a 12-channel driver, so on a typical 12V TM1812 RGB strip, one IC controls a group of 12 LEDs. TM1814 is a 3-channel driver, often used in 24V strips where one IC controls a smaller group, like 6 or 7 LEDs. For finer control on a 24V system, TM1814 is usually the better choice, but for many 12V projects, the TM1812 is a solid, cost-effective workhorse.

With a 12V TM1812 LED strip, you can expect to run about 5 meters (16.4ft) from a single power feed before voltage drop becomes noticeable. The end of the strip will look dimmer and potentially more reddish than the start. For runs longer than 5m, you absolutely need to inject power at both ends or add a new power feed every 5 meters. Don't skip this, it's one of the most common installation mistakes we see.

The TM1812 protocol is a single-wire data signal that's very similar to the one used by the popular WS2811 chip. Because of this, you can usually control a TM1812 IC programmable LED strip by selecting 'WS2811' in Arduino libraries like FastLED or the Adafruit NeoPixel library. Just be sure to set the correct color order (usually GRB) and the number of pixels, remembering that one 'pixel' controls a group of LEDs.

Yes, significantly. A dual-row strip has twice the LEDs per meter as a standard one, and a triple-row has three times as many. This gives you a much brighter, more intense line of light, which is great for high-impact signs or washing large surfaces with color. Just remember that more LEDs means higher power draw, so you'll need a bigger power supply. The PCB is also wider—20mm for dual-row—so make sure your aluminum channel can fit it.

They are very similar but not identical. Both use a single data wire and a comparable control protocol, so they can often be used with the same controllers. The key difference is that the TM1812 is a 12-channel IC, while the WS2811 is a 3-channel IC. This affects how many LEDs each chip can drive. For most practical purposes in a 12V system, if your controller works for a WS2811 programmable strip, it will almost certainly work for a TM1812 strip.

It means the controller IC (the tiny black chip) is a separate component mounted on the flexible PCB, sitting next to the LEDs it controls. This is different from integrated chips like the WS2812B, where the driver IC is built directly inside the 5050 LED package itself. External ICs like the TM1812 are robust and very common in 12V addressable systems.

Absolutely. This is a huge part of our business. You can send us your required lengths—even a simple sketch with dimensions is fine—and we'll build the TM1812 strips to size. We can pre-solder custom-length lead wires and add IP67-rated connectors so your entire run is ready to plug together on site. An engineer will send back a full parts list and quote, usually the same day, with no fee or obligation to order. Much of what we ship is built to a customer's drawing.