Wireless Connection
Wireless Connection
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Another method of connection between the adaptive switch and the toy that creates a broader application range is remote control using radio frequency (RF) transmitter and receiver. This method is currently in the prototyping stage, and the circuit has been tested repeatedly on a breadboard with promising results. The setup of this mechanism relies on two major components, the pair of RF transmitter and receiver, and a 555 timer. The system relies on sufficient external power source or battery to operate. The frequency of the RF system was chosen to be 433 MHz as according to research, is commonly used and preferable in indoor environments with minimum obstructions. Within the adaptive switch, the RF transmitter is connected to a regular non-latching button, which when pressed, prompts the RF transmitter to send a one-time signal.
On the other end of the system, the toy is being adapted using the same battery interrupter mechanism as in the wired version, but instead of the battery interrupter being connected to the mono jack connectors, it is put into the circuit with the RF receiver and a 555 timer. The RF receiver, upon receiving the signal, would activate the circuit momentarily, therefore, in order for the toy to operate normally, the 555 timer was implemented in a bistable mode. Essentially, the circuit, through the help of the 555 timer, is able to remain stable on either the ON or OFF state, and the state is changed when the circuit is activated by the RF receiver.
Credit: Chloe Chen
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