Brian Lough's D1 Mini Matrix Shield works as advertised. It eliminates the need for a lot of DuPont wires that are needed to interface between the D1 Mini and the 36 x 64 LED Matrix that is described in his channel. It is easy to assemble and streamlines the Matrix down to just the power cord coming in.
The assembly instructions are OK. Because the flat cable included with my P5 display was too short and I forgot to order one as an option I used some (5) female-female Dupont wires. Then I used the wiring that was shown in the diagram. That did not work! Of course the flatcable is making parallel connections! After correcting this, it works fine. Maybe this could be explained a bit in the documentation. One mod I made was an On/Off switch I gluewed on the pcb in series with the power input at the barel connector and cut the trace on the pcb. Just as a conveniance when developing sketches. All in all a very nice product.
I added a section about the ribbon cable to the listing just this weekend as it has also caught out another buyer. I was also able to source some longer ribbon cables that will hopefully suit all screen and added them as an option too.
That's a good suggestion regarding the power switch, if I am re-visiting this design its definitely something to consider!
I have added an additional piece of information on my website that hopefully clears up the confusion around the extending of the wiring. But please let me know if it could be improved!
Although there are other ways of achieving what this does - this is a clean, well-designed - and amazingly deeply tested solution (loved the video!) that wrapped up my goal of automating my 3d printer power status.
It's a good investment for the low price. This allows me to leave my printer permanently connected in USB. The USB connection is also more stable. Now I just have to turn on the printer's power supply when I need it, and with a wifi power outlet I no longer have to move around :-) It will also be a perfect companion for my future Octoprint installation.
Delivery was very quick here , upon opening i found the item to be packaged well, the PCB was of a very good quality and the terminals were really well made, easy job of soldering no problems at all. With this kit there is no documentation but all parts like resistor and diode are shown on the PCB silk screen, you just cannot go wrong. A good product. thanks.
This product its pretty much plug and play. make the screen on 3d printer turn off when printer is turned off as it wont get any power from the USB contact while same time lets data singal true when its printing. Perfect for folks that runs octoprint.