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I bought this a few months back and only now started to use it. Works without issue. If you don't get any characters on the display try to adjust the contrast using a screwdriver on the little blue thing on the back side (I did it while it was on, not sure if there's some risk in that or not). If you want to print the degree symbol in python to the display then use "xdf". So, for degrees Celsius it'll be "xdfC" (just add C really). With only 4 pins to connect this display makes tings simple and gives a lot of room for other things. In my case an rf transmitter and additional two dht22s on one pi. Would recommend.
Verified purchase: Yes | Condition: New
Well-read display, low power consumption, low price. They need only 4 wires - 5V, GND, SDA, SCL. Easy to use with the arduino library. I really recommend this display. Note: I2C address is 0x3F, not 0x27.
Verified purchase: Yes | Condition: New
YWRobot driver library works, and it looks and responds just like a "name brand" model. From the factory the contrast was set too low to display anything, but just make sure to turn up the contrast potentiometer before deciding it is a dud.
Verified purchase: Yes | Condition: New
Excellent product - works as expected, is nice looking, and is easy to work with since it has an I2C interface. Be ready to search for & test alternate software libraries if purchasing/using the product for the first time.
Verified purchase: Yes | Condition: New
Really nice. Protective packaging. Highly recommend. Please note that the l2c address can be 0x3F (as was mine).
Verified purchase: Yes | Condition: New
