NEW PRODUCTS – Miniature 8×8 Blue LED Matrix [BL-M07C881B-21]
NEW PRODUCTS – Miniature 8×8 Blue LED Matrix [BL-M07C881B-21]. You will squeak with delight when you hold this adorable miniature LED matrix. 0.8″ square, its got everything a big LED matrix has, but bite sized! 64 blue 250mcd LEDs are contained inside the plastic body, in an 8×8 matrix. There are 16 pins on the side, 8 on each, with 0.1″ spacing so you can easily plug it into a breadboard with plenty of space to wire it up
Since the display is in a grid, you’ll need to 1:8 multiplex control it. We suggest either using a 74HC595 and TPIC6B595 (using the 74HC’ to control the 8 anodes at once and then using the TPIC’ to drive one cathode at a time) or just using a single MAX7219 which will do the multiplexing work for you.
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.
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These are neat matrices. Unfortunately it doesn’t appear you can tile them properly. According to the datasheet, the dot spacing is 2.5 mm, however, the overall package size is 20.20 mm. This greater than (8 dots * 2.5 mm) = 20 mm. Has anyone tried tiling these?