Hello out there,
I am looking for an I2C display working with 3.3V and found a very cheap COG(?) display here http://cgi.ebay.de/ws/eBayISAPI.dll?ViewItem&item=200455716706
The Data Sheets for the ST7032-Conroller http://www.egochina.net.cn/eBay/Download/ST7032.pdf
and the Display JHD755 http://www.egochina.net.cn/eBay/Download/JHD755.pdf
I think it is a DOT-Matrix Display...
My questions are:
-Can I use it with my Arduino mini 3.3V?
-If yes, how?
-Can I use it with the I2C-LCD library from the Playground?
-Or is the one I2C different to the other I2C?
Is someone out there who can help me?
Thanks Berry07
The manual clearly states:"16 Characters * 2 Lines". So you can't control its dots, just what characters to display. If you don't have a connector for the tiny flexible cable, you will have a hard time connecting to it.
Hi, I just published a library in the playground that should almost be compatible with the driver that is used by the display uses, the ST7032. Take a look at the newhaven display driver. You can also read a reference on this forum a few posts below this one.
As far as voltage is concerned you will need a 3.3V Arduino (the 3.3 V mini shoul be good) look at the operating voltage on the LCD data sheet from your link.
I also agree with the previous comment, the pitch is going to be a bit fiddly. I suggest using a bigger pitch i2c LCD.
The i2c library in the play ground is very dependent on the controller/driver chip. You will need a specific driver that will match the controller, I.e. The i2c is just the mechanism to "talk to the LCD". I've had a very good experience with the NHD-C0220BiZ?FSW?FBW?3V3M.
Associated post: http://arduino.cc/forum/index.php/topic,70085.0.html
Let me know if you can't find the library and will send you a reference to it in the playground.