Using inexpensive WS2811 chips as serial seven segment drivers #Electronics #NeoPixels @mohitbhoite @idlehandsdev
Via Mohit Bhoite on Instagram – when the first strips of smart LEDs were available, they were driven by a WS2811 chip next to the LEDs. They were later replaced, for the most part, by the WS2812 (NeoPixels) and other devices where the chip was integrated into the LED package.
The WS2811 is still widely available and is very inexpensive – what can be done with these three channel driver chips?
Testing these addressable 7 segment displays designed by Sean Hodgins @idlehandsdev on Instagram and Twitter. I love his clever use of WS2811, which are traditionally used to control RGB LEDs, to control the 7 segment displays. They only need a single GPIO!
Being able to control 10 (or more) of these with a single wire is pretty cool.
Using the Adafruit Neopixel library to control them with a Trinket M0
With this approach and some clever programming, you can control a large number of displays with one digital I/O line! Brilliant!
I just discovered the Chinese TM3130 chip. It drives 4 digits at seven segments and is addressable and chainable pretty much like a WS2811, plus it can push 2MHz data rate!
We look forward to investigations in this direction.
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, or even use Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for MakeCode, CircuitPython, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.