Adafruit_CharLCD.py - Garbled text with 2ms delay for clear() and home()

[mmattozzi]

Hi--

I purchased the 16x2 LCD from your website and hooked it up as specified in your tutorial. Initially, I was having a lot of problems with the text being garbled on the screen. It seemed like there was a less than 50% chance of the text coming out correctly.

I increased the delayMicroseconds from 2000 to 3000 for the clear() and home() methods and this greatly reduced the likelihood of garbled text-- perhaps down to 1%.

According to the table in the posted doc for the LCD (http://adafruit.com/datasheets/TC1602A-01T.pdf), clear() and home() can take up to 2.16ms.

I should also mention that I've had best results always calling clear() then home() before message(). When I just call clear(), sometimes the first character is omitted. If I just call home(), things get real crazy. :)

So, you might want to increase the delayMicroseconds... there could be other users running into the same problems.

[ladyada]

patched!

[unrepentantgeek]

I still get the garbled text at 3000, changing it to 4000 fixes the issue. I thought I was going mad.