Etch A Sketch Animator

The Etch A Sketch Animator, released by The Ohio Art Company in 1986 at an initial price of $89.99, is the most famous mechanical drawing toy rebuilt as a computer. The classic Etch A Sketch — two knobs moving a stylus through aluminum powder behind a gray screen — was digitized into a handheld box with a 40x30 dot-matrix reflective LCD, two blue knobs, and eight function buttons. Turning the knobs still feels like turning the knobs; but beneath each one sits a slotted cup interrupting an infrared emitter and a pair of photodetectors, generating a quadrature code that a 4-bit Sanyo LC6523A microcontroller decodes into X or Y cursor motion. The device plays a static-like tone from its piezoelectric speaker while you draw, an auditory echo of the powder-grating sound of the original.

The deeper innovation is time. The Animator holds twelve frames of drawing in two kilobytes of SRAM, each frame a 40x30 bitmap, and plays them back as animation in sequences up to 96 steps long. You draw a frame, press SAVE, recall it as a base, modify it, save again — building a hand-made flip-book in memory. Eight buttons handle the workflow: On/Move, Draw, Erase, Save, Recall, Next, Animate, and Reverse (which XOR-inverts the image). Children built small film loops — a walking robot, a spider, a breakdancing skeleton were among Ohio Art's sample animations preserved at The Strong museum.

Precision matters here: the Animator does not tween. Every frame is hand-drawn; the toy stores and sequences them but never generates in-betweens. The remarkable HCI fact is the pairing of an utterly familiar analog ritual with a genuinely new computational one — frame-based time editing — in a consumer toy that sold well enough to lift Ohio Art's profits fivefold in a year. The Animator 2000 (1987-88) replaced the knobs with a stylus-and-touchpad and became a cartridge game system, dropping the very ritual that made the original special.