Review on 📺 MakerFocus 1.5inch OLED Display Module 128x128 Pixel SSD1327 - SPI/I2C Interface, 16-bit Grey Level - for Ar duino/Raspberry/Jetson Nano/STM32 - DC 3.3V / 5V by Randy Butler

and he was ok. I have no idea why it didn't work on the same board without further modifications. It's a mystery as I didn't make any changes to either display that I thought were broken and they turned out to be perfectly fine.I hope this helps anyone who has trouble at first.Works great on all my mt32pi boards.Edit 02/21/2021 One of the two bad boards started working mysteriously although it wasn't stable.I've been looking for shorts and don't see any problems with soldering.Next time I take out the soldering iron , I'll try to tweak all the points to be sure, although I have a little more hope that it's not an LCD and possibly my own fault, I can test the 4th again, although it's already off the board was removed. I'll keep the review updated so if you run into issues like mine, you'll know what to expect. Original Make sure you test them if you can before soldering them to your PCB. My first two worked great so I didn't expect the next pair to have any issues. Unfortunately the last 2 I used were no luck from the group. I only realized they were dead after soldering them to my project's PCB and trying to use them. The rest of the board works (the synthesizer transmits sound), but both projects have no screen on the OLED display. Luckily I have two working boards, but now the other two boards are broken. Very frustrating as it will be difficult to remove and get them back.