An ESP8266 microcontroller and two 3144E hall effect modules were used to sense eight magnets glued onto the outer housing of a “One Fast Cat” cat wheel. [Scott] installed the ESP8266 and hall ...

Evie's owner said that the ragdoll meows at her from another room if she does not tend to her running wheel fast enough.

If you decide to make this, go with one-inch dowels. Also, before you jump in, know that cat wheels make noise — at least ...