https://www.onefinitycnc.com/product-page/onefinity-joystick
Take your Onefinity to the next level with the Onefinity Joystick. Not only does this Joystick allow you to wirelessly control your Onefinity’s X, Y, Z motion, you can control the speed with 4 different speed setting. After using this Joystick, you’ll wonder how you got along without it. This is an amazing accessory!