Control real world devices with your PC
This Instructable shows you how to interface a PC and microcontroller. This demo will sense the value of a pot or any analog input and also control a servo. Total cost is under $40 including the servo. The servo turns on a microswitch and then the microswitch turns on a lamp. In a practical application the pot could be a temperature sensor and the servo could be turning on a heater. The servo could be replaced with a relay or other power controller. The picaxe is programmed in a simplified version of basic and the interface uses VB.Net. All software is available for free.
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