Search found 7 matches

by raschemmel@yahoo.com
Fri Nov 15, 2013 9:17 pm
Forum: Display
Topic: Serial I2C LCD 1602 Module (HCARDU0023)
Replies: 44
Views: 38427

Re: YwRobot Serial I2C LCD 1602 Module (HCARDU0023)

I'm a bit confused about the libraries for the YwRobot I2C LCD. I've found 3 different links , two of them point to a library called LCDI2C, the other to one called Liquidcrystal_I2C. ------------------------------------------------------------------------------- https://bitbucket.org/pfeerick/web4r...
by raschemmel@yahoo.com
Fri Nov 15, 2013 3:41 pm
Forum: Display
Topic: Serial I2C LCD 1602 Module (HCARDU0023)
Replies: 44
Views: 38427

Re: YwRobot Serial I2C LCD 1602 Module (HCARDU0023)

I just got the same display, exactly like the photo posted and couldn't find any code that worked on the net. I'm new at programming so there's no way I could do it. I saw the photo of the one with the Hobby Components URL on it an thought I hit the jackpot so I: 1. connected the pullups to A4 & A5 ...
by raschemmel@yahoo.com
Fri Nov 15, 2013 3:41 pm
Forum: Display
Topic: Serial I2C LCD 1602 Module (HCARDU0023)
Replies: 44
Views: 38427

Re: YwRobot Serial I2C LCD 1602 Module (HCARDU0023)

I just got the same display, exactly like the photo posted and couldn't find any code that worked on the net. I'm new at programming so there's no way I could do it. I saw the photo of the one with the Hobby Components URL on it an thought I hit the jackpot so I: 1. connected the pullups to A4 & A5 ...
by raschemmel@yahoo.com
Sun Nov 10, 2013 11:02 pm
Forum: Display
Topic: 16 x 2 Character LCD Module (HCMODU0013 & HCMODU0038)
Replies: 10
Views: 13297

Re: 1602 LCD Module (HCMODU0013 & HCMODU0038)

FYI:
LCD-BRIGHTNESS=240 gives a 92.8% duty cycle (325uS ON, 25uS OFF). Voltage to VD pin=0.839Vdc.
by raschemmel@yahoo.com
Sun Nov 10, 2013 10:43 pm
Forum: Display
Topic: 16 x 2 Character LCD Module (HCMODU0013 & HCMODU0038)
Replies: 10
Views: 13297

Re: 1602 LCD Module (HCMODU0013 & HCMODU0038)

I owe everyone an apology. I made a stupid mistake and gave you the wrong information. I am too embarassed to explain my error but here is the fix: Replace the 100k resistor with a 4.7k ohm. Connect a 1k resistor from the output of the RC filter (where the 4.7k connects to the 1uf Cap) to ground, cr...
by raschemmel@yahoo.com
Fri Nov 08, 2013 6:31 am
Forum: Display
Topic: 16 x 2 Character LCD Module (HCMODU0013 & HCMODU0038)
Replies: 10
Views: 13297

Re: 1602 LCD Module (HCMODU0013 & HCMODU0038)

I discovered that with a few modifications you can control the LCD contrast digitally by replacing the potentiometer with a wire going to digital pin 6 and adding the following to the program: const int PIN_LCD_LED = 6; // analog const int LCD_BRIGHTNESS = 46; int state_lcd = LOW; lcd.noDisplay(); /...
by raschemmel@yahoo.com
Wed Nov 06, 2013 6:51 am
Forum: Display
Topic: 16 x 2 Character LCD Module (HCMODU0013 & HCMODU0038)
Replies: 10
Views: 13297

Re: 1602 LCD Module (HCMODU0013 & HCMODU0038)

Thank you so much for the example code ! I just got an Arduino UNO and I was having trouble finding a working example code online. Your's worked perfectly ! I'm going to try to figure out how to create a serial input character counter so I can output text 16 characters at a time , alternating betwee...