Tinycircuits small form factor tinycircuits asd2413 r la the tinycircuits tinyshield matrix led board is a 6 x 9 grid of leds 54 leds that are individually addressable allowing you to scroll text draw images and all sorts of other things this tinyshield is compatible with the popular arduino lol shield library lots of leds created by jimmie rodgers the leds are driven using charlieplexing which is a technique for controlling multiple leds using fewer io signals available with red