Paul,
Usually this is caused by having other lcd type libraries installed. User Libraries are often installed into myDocuments/Arduino/library folder
There are 2 things you can try
1. Uninstall the Arduino IDE programs using control panel. Then delete all the user libraries and any other arduino files file over (possible in program files x32/arduino and also the users appdata/local/arduino (what i would do is move that folder somewhere else so you can restore it later on if needed)
Reinstall the arduino ide and then copy the liquidcrystal_I2C1602 library into the myDocuments/Arduino/libraries folder
this has been know to resolve most issues
Else you can try a different lcd library
Unzip the attached file. It will create a directory
Copy that folder NewLiquidCrystal inro myDocuments/Arduino/libraries
After that, start the Arduino IDE program and load the other program I attached (you need to unzip that first) and run it.
Let me know what happens
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Paul,
Usually this is caused by having other lcd type libraries installed. User Libraries are often installed into myDocuments/Arduino/library folder
There are 2 things you can try
1. Uninstall the Arduino IDE programs using control panel. Then delete all the user libraries and any other arduino files file over (possible in program files x32/arduino and also the users appdata/local/arduino (what i would do is move that folder somewhere else so you can restore it later on if needed)
this has been know to resolve most issues
Else you can try a different lcd library
Unzip the attached file. It will create a directory
Copy that folder NewLiquidCrystal inro myDocuments/Arduino/libraries
After that, start the Arduino IDE program and load the other program I attached (you need to unzip that first) and run it.
Let me know what happens
Here is the focuser code rewritten to support the other newliquidcrystal library
Last edit: brownrb 2016-02-13
Here is the newliquidcrytallibrary
Make sure you remove the liquidcrystal_i2c1602 library folder!!!!! - replace it with this one
email direct if this does not help, thanks