Okay, so if you were going to make a simple LED 4 digit clock, you probably wouldn’t start with a Raspberry Pi. But I wanted to test out I2C on the Pi and Adafruit’s I2C LED displays looked like a good bet. I also used a level converter to convert the Pi’s 3.3V I2C to the 5V I2C required by the LED module.
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.
Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !
I noticed that Adafruit’s tutorial on connecting the 7-segment display w/ backpack to a Raspberry Pi doesn’t use a level converter. Is there an advantage to using one?
hiya! you don’t need it connecting the 7-segment display power to 3.3V and if you only have one item on the bus, you can even connect it this way powered off of 5V (the onboard pullups are much weaker than the Pi’s i2c pullups