This library works with regular 16x1 displays and with chinese 16x1 displays where the second 8 characters are on new line. R/W pin should be tied to GND.

Thanks to jaromir-sukuba, and racerxdl for working on firmware to implement C2 protocol via arduino GPIO. This work largely pulls from them, as well as connorpp. C2 is a 2-pin protocol. Any arduino ...