![]() ![]() I know there's something wrong with the code, however I cannot figure out what. It's not in the library folder of the arduino install, nor in the library folder of the sketchbook. But now I want to have a look inside the source, and can't find it. Can somebody tell me why? For reference, 0x50 is the address + r/!w bit, 0xA9 is the command (write to pot 0 in my case) and the next 0xA9 is the value to write. manorroyal January 18, 2017, 9:47am 1 I have merrily include 'd Wire.h in many programs, and it's always worked so it's obviously present. I have managed to get it working using Wire, however I can't seem to get it working using only digitalWrite ( link to code). I have the following digital potentiometer: DS1803-100 which, according to the datasheet, can be controlled using a two-wire serial interface.
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