January 30, 2012 AT 11:21 am

Quick project: ambient temperature display using Adafruit RGB LCD

Pt 573

Quick project: ambient temperature display using Adafruit RGB LCD via the Adafruit customer forums… ogrodnek writes -

I wanted to share a quick project using one of the adafruit RGB LCDs. It’s an ambient temperature display — it displays the current temperature and will adjust the LCD backlight color depending on where it falls. It’s a really simple project — just wire up the LCD and a temperature sensor. There’s more info, a video, and the source code here. thanks!


162Rgblcdpos Lrg

RGB backlight positive LCD 16×2 + extras, black on RGB. This is a fancy upgrade to standard 16×2 LCDs, instead of just having blue and white, or red and black, this LCD has black characters on a full color RGB-backlight background! That means you can change the background color to anything you want – red, green, blue, pink, white, purple yellow, teal, salmon, chartreuse, or just leave it off for a neutral background. This LCD is the most daylight readable character LCD we have.

We had these custom made to our specification so that you can use them in existing LCD projects and they’ll still work – just that only the red LED will be used. The extra two pins (17 and 18) are for the green and blue LEDs. The LCD has resistors on board already so that you can drive it with 5V logic and the current draw will be ~20mA per LED. There’s a single LED backlight for the entire display, the image above showing 3 colors at once is a composite!

Comes with a single 16×2 RGB backlight LCD, 10K necessary contrast potentiometer and strip of header. Our tutorials and diagrams will have you up and running in no time!

In stock and shipping now.

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1 Comment

  1. I bought some parts to do exactly this!

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