SKU: 34315185836

ADF LCD+SERIAL B/PACK KIT RGB/BK

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Description

ADF LCD+SERIAL B/PACK KIT RGB/BK784 :: USB + Serial Backpack Kit with 16x2 RGB Backlight Negative LCD and RGB on Black Overview Adding a character display to your project or computer has never been easier with the new Adafruit USB or TTL serial backpack! This custom designed PCB sits on the back of our'standard' character LCD (16x2 or 20x4 sized) and does everything you could want: printing text, automatic scrolling, setting the backlight, adjusting contrast, making custom

784 :: USB + Serial Backpack Kit with 16x2 RGB Backlight Negative LCD and RGB on Black

Overview

Adding a character display to your project or computer has never been easier with the new Adafruit USB or TTL serial backpack! This custom-designed PCB sits on the back of our'standard' character LCD (16x2 or 20x4 sized) and does everything you could want: printing text, automatic scrolling, setting the backlight, adjusting contrast, making custom characters, turning on and off the cursor, etc. It can even handle our RGB backlight LCDs with full 8-bit PWM control of the backlight. 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.

Inside the backpack is an USB-capable AT90USB162 chip that listens for commands both a mini-B USB port and a TTL serial input wire. The USB interface shows up as a COM/serial port on Windows/Mac/Linux. The backpack will automatically select data from whichever input is being used. For the USB connection, it will work at any baud rate. For the TTL connection, the default baud rate is 9600 but you can send it a command to set the baud rate to 2400, 4800, 9600, 19200, 28800, or 57600 baud. (The baud rate is flashed on the LCD during powerup). Any customizations such as baud rate, backlight color, brightness, splash screen, etc. are stored permanently EEPROM.

The command interface is compatible with the popular "Matrix Orbital" specifications so this backpack will work perfectly with computer applications or libraries that are expecting a "Matrix" LCD such as "LCD Smartie". We added a few extra commands for the RGB backlight and setting the LCD size. If you don't want to use the commands, you can just start sending ASCII to the LCD and it will magically appear as typed.

This mini-kit comes with three parts: the Adafruit USB+Serial LCD backpack and a single 16x2 RGB negative backlight LCD, and a strip of header. The LCD must be soldered onto the backpack using the header. This isn't a difficult task but a soldering iron and solder is required. It's easy, even for a beginner, to attach the LCD.

Features

 

     

      Specification

      Backpack Details :

      • Compatible with any 'standard' 16x2 or 20x4 character LCD as well as any Adafruit RGB LCD.
      • Full PWM backlight control
      • Supports the following Matrix Orbital commands :
        • Autoscrolling
        • Baud rate adjust
        • Clear screen
        • Change splash
        • Auto-wrap
        • Set cursor
        • Home
        • Move cursor
        • Underline/Block cursor
        • Create custom characters
        • Save custom character bank
        • Load custom character bank
        • Display On/Off
        • Set brightness
        • Set contrast
        • General Purpose Outputs (4)
      • Supports extended Adafruit commands :
        • Set RGB backlight
        • Set LCD size (up to 20x4)

      LCD Details :

      • 16 characters wide, 2 rows
      • Black text on multi-color background
      • Built in character set supports English/Japanese text, see the HD44780 datasheet for the full character set
      • Up to 8 extra characters can be created for custom glyphs or 'foreign' language support

         

        Shipping Notes
        • Free Standard Shipping on $100+ Orders to the USA.
        • Except Preorder products are shipped in 48 hours.
        • Delivery to the USA:
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        • If time is of the essence, please consider selecting expedited delivery for faster service.
        Exchange/Return Notes
        • We offer a 30-day return/exchange service after receiving.
        • Final sale items are not eligible for returns or exchanges.
        • To process your return/exchange, please contact us at [email protected]
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        SKU: 34315185836

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        Hernan Amadeo
        Lexington, US
        ★★★★★ 4
        Buenas relación calidad precio
        Color: Green
        Bueno y bien precio.
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        Reviewed in the United States on February 16, 2025
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        VSH
        Alexandria, US
        ★★★★★ 3
        Very nice everyday watch
        Color: Black-Red/Digital/Black
        A watch with a lovely design. Really good quality silicone strap. The price is a bit high.
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        Reviewed in the United States on January 14, 2026
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        Stacey
        Houston, US
        ★★★★★ 5
        You'll love it
        Color: Black-Red/Digital/Black
        simple and easy to set up
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        Reviewed in the United States on March 6, 2026
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        andrew
        Massapequa, US
        ★★★★★ 5
        Great value watch with all the basic functions.
        This is a solid watch for the money. I think if you are looking for a training watch that doesn't break the bank, this is a good option. I looked at a ton of options, and I know there are some even cheaper entry level options, but this Ironman was a little bit of a step up in appearance and quality. To me it's worth it to get this over something in that $20 to $30 range. The Ironman was more stylish and less bulky than a lot of those options. This watch has a nice sized face that makes it easy to see without being so large that it's too much. There are some of these entry level sports/military watches that are just enormous. I'm not a huge guy so this was a much better option. One thing I am really liking is how flexible the strap is. The material has a nice give to it making it a very comfortable watch to wear. I've had some watches in the past where the bands were just too stiff and made the watch very uncomfortable. It's easy to understand and operate. I didn't even read the manual and had everything figured out after 5 or so minutes. Unless you are really going to step up and get a GPS smart watch in the $200 and up range, this watch is a great option.
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        Reviewed in the United States on September 15, 2018
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        FJ
        Cuba, US
        ★★★★★ 5
        Great watch for healthcare workers
        This is a great watch that I use for my nursing clinical rotations at hospitals. It has been washed and disinfected many times and it still looks new. I can read the time without my glasses I wear for astigmatism. The light is good for nighttime or darkened rooms. I think the alarm and hourly chime are harsh sounding, but they serve their purpose if needed (The beep of a Casio digital watch is preferred, for a frame of reference).
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        Reviewed in the United States on February 5, 2026

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