GRAPHIC ST7565 NEGATIVE LCD (128X64) WITH RGB BACKLIGHT

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tcqiang
 
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GRAPHIC ST7565 NEGATIVE LCD (128X64) WITH RGB BACKLIGHT

Post by tcqiang »

Hi Guys,
I just brought GRAPHIC ST7565 NEGATIVE LCD (128X64) WITH RGB BACKLIGHT https://www.adafruit.com/products/438, But I DON'T KNOW how to connect these pins: B-, G-,A+,R- to Arduino to change its backlight colour, can anyone help me thank you!

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Franklin97355
 
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Re: GRAPHIC ST7565 NEGATIVE LCD (128X64) WITH RGB BACKLIGHT

Post by Franklin97355 »

According to this datasheet http://www.adafruit.com/datasheets/TG12 ... N_V1.0.pdf the A+ goes to 5vdc and the other three (R,G,B) would go to pwm pins to control the rgb LEDs. What are you trying to hook this up to?

tcqiang
 
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Joined: Tue Jun 17, 2014 10:27 am

Re: GRAPHIC ST7565 NEGATIVE LCD (128X64) WITH RGB BACKLIGHT

Post by tcqiang »

I wanna connect it to Arduino mega

tcqiang
 
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Re: GRAPHIC ST7565 NEGATIVE LCD (128X64) WITH RGB BACKLIGHT

Post by tcqiang »

franklin97355 wrote:According to this datasheet http://www.adafruit.com/datasheets/TG12 ... N_V1.0.pdf the A+ goes to 5vdc and the other three (R,G,B) would go to pwm pins to control the rgb LEDs. What are you trying to hook this up to?
I wanna connect it to Arduino mega, Do i need to add 270ohm resistors to A+?

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Franklin97355
 
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Re: GRAPHIC ST7565 NEGATIVE LCD (128X64) WITH RGB BACKLIGHT

Post by Franklin97355 »

According to page 4 the red LED takes less voltage to light so you might want to put the resistors on the LED -side and adjust their value to get a balanced light output. Also on page 6 it shows the Anode voltage as 3v so be careful connecting things as you are testing.

tcqiang
 
Posts: 4
Joined: Tue Jun 17, 2014 10:27 am

Re: GRAPHIC ST7565 NEGATIVE LCD (128X64) WITH RGB BACKLIGHT

Post by tcqiang »

franklin97355 wrote:According to page 4 the red LED takes less voltage to light so you might want to put the resistors on the LED -side and adjust their value to get a balanced light output. Also on page 6 it shows the Anode voltage as 3v so be careful connecting things as you are testing.
Do I need a voltage level shifter 4050 for the 3 PWN pins from 5v to 3.3 V?

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