For simple applications, microcomputers such as Parallax's Basic Stamp, or controllers from Z-World Engineering are low-cost, easy to program solutions that will work with the AX2550. For applications requiring more processing,a large number of single board computers are available from several manufacturers. It is even possible to use a low cost PC motherboard or laptop if size or power consumption are not an issue. In short, any computing engine with a free serial port may be used with the AX2550. A Palm Pilot can be a good and low cost controller since it has a serial port that can be connected to the AX2550.