开云体育

Besides making sure you are using the correct I2C library for the DDS/49-er radio, you need to make sure that you are calling the display in the code but its proper address. If you head over to this site:? - there's a TON of information about several I2C displays including how to install the latest I2C library. About 3/4 of the way down the page, there's a sketch for an "I2C Address Scanner." If you copy and paste this code into a new Arduino sketch, then run it according to the instructions, you'll find the address for YOUR display. I think the standard address for the 16 x 2 display is "0x27" but I wouldn't quote me on that. Not having the correct I2C address will cause all kinds of issues IF the display puts out any data at all - which is most often the case... nothing showing up. The best you might do is the backlight coming on. However, since you're getting small bits of data being displayed, I'm going with the incorrect I2C library being installed as being your problem. However, it never hurts to check for the correct I2C display just to rule that out as a potential issue.

Aaron - N2HTL