DAOKI MAX7219 Dot led Matrix MCU 8x32 Control LED Display Module Drive for Arduino Raspberry Pi 4 in 1

Then I used them to make a weather & climate app An overview of the latest news. There are no heat issues associated with the displays and they are bright and clear. These units are fantastic. I am really pleased with them.

Wesley Mullins

| Nov 19, 2020

A $6 bill was sent to me. The best part is that I paid 99 and got THREE awesome items! It is a great set of tools and they all chain together well. The matrices are really bright at full brightness, and I've shot a pic with a piece of blue tape over them to see how well they would shine through some thin plastic (I'm going to put it in a 3D printed case). I can keep my eyes from burning out of the LEDs because the blue tape prevents them from lighting up. The following warning is in effect They are called Googles Doing nothing is what they do.

Baylor Kaiser

| Jul 10, 2021

Initially, I had difficulty installing the correct version of the Parallax library, but when I finally did I was able to configure it with complete success. After trying each possible configuration I used either the SPI connection or software method successfully. Although I didn't notice a huge speed difference, I don't have any time-critical applications to test it. As far as the fit between the modules was concerned, everything was as smooth and flush as you could expect for their price (this is a compliment, So I bought a second one so that I could put two of them together.

Jonathan Stewart

| Jun 25, 2021

As a result, a module was defective, but I did not return it because I still needed to finish the project and replace it with another module with the same problem I had.

Arturo HOWELLS

| Jan 23, 2021

Product is of good quality *DIFFERENT TYPES OF HARDWARE I purchased two of these, one green and one blue. My first thought was that they would all be fine, as I followed a nice tutorial I found online (a makerguides tutorial). In truth, when the device first started, the characters were rotated by 90o and they were not displayed in the correct sequence (when the connection pins were to the left, the characters should have been upright and oriented left to right, as described It was possible for me to recognize the characters if I tilted my head and used my imagination, but it wasn't accurate. Pictures are listed above (exposure is set so you can read the characters easily). When I poked around, I found that there was a MD_MAX72xx_font in the MD_MAX72XX folder of the Arduino libraries, then in the src folder, as well as in the Arduino libraries folder. Within this cpp file we found a section containing a list of types of hardware. I added the following #define HARDWARE_TYPE MD_MAX72XX to my own sketch From the tutorial, I got the following statement Generic_HW
. In order to experiment with each of the hardware types, I compiled my sketch with each hardware type. When I opened the cpp file, this is what I found I don't know what would have happened if I hadn't used DR1CR0RR0_HW. )I wish DAOKI had identified the hardware type in its description of the product. Overall, I am satisfied with both the They are clear, quick to respond to On command, they dim and brighten as best as possible. (I use voltage from a light sensor hooked up to my MEGA to control them. ) DAOKI would definitely be a company I would buy from again, especially because the colors were all my choice. Sellers who don't disclose the color of their product or who only sell RED MAX7219s are also missing out on potential customers.

Danny Giles

| Apr 27, 2021

It's great for my grandson who's in his teens.

Kadence DOBSON

| Apr 20, 2021