Re: LCD 20x4 I2C
Change wire and now all ok.
From: matjaz via Groups.Io
Sent: Tuesday, June 05, 2018 8:59 PM
Subject: Re: [BITX20] LCD 20x4 I2C
I have this one
Try all address 0x3F and 0x27 but always equal
I would remove the 5v pullups from the LCD backpack, the Raduino still has 3.3v pullups on those lines.
A 3.3v high into the PCF8574T chip on the LCD backpack board seems to work fine.
On Tue, Jun 5, 2018 at 10:07 am, Tim Gorman wrote:
You can't just connect D4 and D5 to the SDA/SCL leads.