Light Signal Controller Compatible With Arduino Sequencer AC Voltage 10 Channel Solid Sate Relay SSR Programmable 100V-240VAC 50HZ-60HZ Crosswalk & Arrows RED GREEN YELLOW Built-in Leds

You can really do a lot with this controller. It was a bit of a process finding the software and downloading it. It was also a bit of a process trying to figure out the test code you need to start with. I was able to get mine working but changing the code to suit my needs seems like it will definitely take some trial and error. All in all, it’s well built and really does work. But… I’d say you need to be above average in computers/programming. Which I’m not. Seller states all this in the listing and offers immediate support.

If you have a custom project you want to control this works fantastic! I have used a fixed format controller to just do standard control of a traffic signal and if that is all you need then this is probably more complicated than you want. It definitely takes some programming to make it usable rather than just choosing a sequence. If you want to customize anything about your controls, this is exactly what you want. The seller was very helpful with a customization question I had and I'm very happy with the Arduino setup. Arduino has a full reference on their website. All 6 outputs are completely independent and can be programmed to act any way you want, or do nothing. This board can be used for much more than traffic signal control.

Works very well and has highly customizable software. However, the designers consumed the only two available hardware interrupt pins as outputs, which does not lend well to extending the product to communicate with other external hardware. For example, mine now respects a motion sensor and adjustable timing dials. But, without the interrupt pins I cannot power down the chip to save energy and wake on the next detected motion. Instead I wait in a delay loop and sample a non-interrupt pin. Regardless, the product works exactly as described and designed, just be aware of this caveat if you plan to make hardware customizations.

We were having trouble with the program for a 4-way signal light and received a quick response from the programmer (<24 hours!). He sent exactly what we needed and now everything is working great!

I had a pair of old traffic lights that I obtained in the early 80s. I had an engineer design and implement a controller using a vintage dial timer with Radio Shack relays and a mechanical flasher that he put into a heavy steel box. You could hear the relays click as it changed lights. It sat in our basement for decades until I stumbled across this board on Amazon. I bought an inexpensive plastic control box and converted the incandescent bulbs in the signals over to LED and bought this board to put into the box to control both lights at the same time (see photo). It worked flawlessly during testing phase before the lights were connected to it. There are small LED lights on the board so you can see the results of the changes you make to the program. And, it works great with the lights connected (see video). Don’t be intimidated by the warnings that you need to be a programmer to run this thing. You simply need to download “Arduino 1.8.19” from the Arduino website, install it, set your COM port, choose “Arduino Uno”as the board and get ahold of the “6-channel code” from the seller (Amazon made him take down the links, so just “contact the seller.” He is very responsive and helpful.) Once you have the code, you load it into the software and scroll all the way to the bottom where the sequence and delay times are for each light (designated as “a” and “b”). Save your changes, then upload the code to the board to see the results. During this process, the board must be connected to the PC running the software with a USB to mini-USB cable. To make it easy to make changes to the program, I have the USB cable “permanently” connected directly to the board in the control box with the other end coming out of a hole for plugging into the computer. Great product! Great customer service! I recommend it highly if you are traffic light enthusiast looking to go solid state with your setup. Update: After owning several of these boards and having them work for sustained periods of time, I can no longer fully recommend them. The reason: the relays fail, one at a time, after a period of usage—less than a year. I have one 4-way traffic light (needs a 6-channel board to operate appropriately) with 2 6-channel boards in it because relays keep failing on the boards. So, in effect, I have 12 channels in order to get 6 good ones. Finally, another failed yesterday leaving me without a way to light all 6 channels. So, now I need to find another solution to make the light work. When I started having trouble with several of the boards, the guy who runs the U.S. operations didn’t believe he was selling a product with defective relays and blamed me for the problems I was having. If you plan to have your traffic lights on a lot, this is probably not the right board to get. Unfortunately, right now, it’s the only game in town for 6 channels.