I really like the Adafruit LCD Backpack, but I’ve been wanting to play around with adjusting the LCD backlight brightness programatically. After much mulling and reading of forum posts, I decided to just operate the backlight using one extra wire to a PWM pin on the Arduino. To try and keep things tidy, I ordered some extra 3-pin terminal blocks so I could make a 6-pin block instead of the normal 5-pin block. Just to up the stakes, I’m doing this with my brand new 20×4 LCD.
Make a robot friend with Adafruit’s CRICKIT – A Creative Robotics & Interactive Construction Kit. It’s an add-on to our popular Circuit Playground Express, FEATHER and other platforms to make and program robots with CircuitPython, MakeCode, and Arduino. Start controlling motors, servos, solenoids. You also get signal pins, capacitive touch sensors, a NeoPixel driver and amplified speaker output. It complements & extends your boards so you can still use all the goodies on the microcontroller, now you have a robotics playground as well.