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RGB LCD Shield 2 pins question?
Moderators: adafruit_support_bill, adafruit

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RGB LCD Shield 2 pins question?

by 1885 on Mon Jan 01, 2018 11:49 am

I just assembled the RGB LCD with 2 pins. https://learn.adafruit.com/assets/1390
Molto epico
I just want to confirm the specs
The RGB LCD uses I2C pins on Analog 4 and Analog 5.
I found this https://www.arduino.cc/en/Reference/Wire as documentation for I2C.
I've never used I2C so I need to do some reading.


The Question?
So this means I can use A0, A1, A2, A3 along with D2 to D13 along with RX/TX
and I'll need a voltage source is if I want to power something like a
Wire nRF24L01+ to Arduino UNO

GND <–> GND
VCC <–> Arduino 3.3V
CE <–> Arduino pin 9
CSN <–> Arduino pin 10
SCK <–> Arduino pin 13
MOSI <–> Arduino pin 11
MISO <–> Arduino pin 12

Thanks Adafruit!

1885
 
Posts: 88
Joined: Sun May 24, 2009 2:12 am

Re: RGB LCD Shield 2 pins question?

by adafruit_support_bill on Mon Jan 01, 2018 12:24 pm

Connecting to an UNO, the shield requires GND, 5v, SDA (A4) and SCL (A5).

Not sure about the voltage requirements of your nRF24L01+ module. If it is a 3.3v device, you may need some voltage level shifting between the 5v UNO and the module. I'd check with the module manufacturer to be sure.

adafruit_support_bill
 
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Re: RGB LCD Shield 2 pins question?

by 1885 on Mon Jan 01, 2018 12:56 pm

adafruit_support_bill wrote:Connecting to an UNO, the shield requires GND, 5v, SDA (A4) and SCL (A5).

Not sure about the voltage requirements of your nRF24L01+ module. If it is a 3.3v device, you may need some voltage level shifting between the 5v UNO and the module. I'd check with the module manufacturer to be sure.



Thanks! I'll get 3.3V from 5V with a voltage drop. Everything else should work fine. Thanks!

1885
 
Posts: 88
Joined: Sun May 24, 2009 2:12 am

Please be positive and constructive with your questions and comments.