New lower price for Axon II ($78) and Axon Mote ($58).
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No need for a microcontroller
well using a simple circuit will give u simpler solutions but what if u want to add an extra functionality such as 10 leds are connected and u want to switch on one by one , the no of times a letter is dropped to a max of ten wallah u need the microcontroller then...
slap the postman or open the door of the dog house
servo to turn on the LED