This example introduces a 16-channel wireless remote control switch that can control the opening and closing of 16-channel household appliances power within 60m, independent of obstacles such as walls, doors and windows.
The wireless remote control switch circuit is composed of a wireless remote control transmitting circuit and a wireless remote control receiving control circuit.
The wireless remote control transmitting circuit is composed of control buttons S1 to S16, resistors R1 to R3, capacitor C1 Zener diode VS, crystal oscillator BC1, DTMF coded integrated circuit IC1 and wireless remote control transmitting integrated circuit IC2, as shown in the figure.
Wireless remote control transmitting circuit
The wireless remote control receiving control circuit is composed of a wireless remote control receiving/decoder circuit and a trigger control circuit, as shown in the figure.
Wireless remote control receiver/decoder circuit
Component selection
R1, R2 and R4, R6 to R39 select 1/4W carbon membrane resistor or metal membrane resistor for use; R3 and R5 select 1/2W metal membrane resistor for use.
C1 ~ C3 are selected aluminum electrolytic capacitors with a withstand voltage of 16V.
VS selects 1/2W, 5.1V silicon Zener diode.
VL1 ~ VL16 select φ3mm ordinary light-emitting diodes.
V1 selects S9013 type silicon NPN transistor for use; V2~V17 selects C8050 or S8050, 3DG8050 type silicon NPN transistor for use.
IC1 selects UMMF87 type telephone for DTMF dialing code integrated circuit; IC2 selects HS101 type wireless remote control to transmit thick film integrated circuit; IC3 selects HS201 type wireless remote control to receive thick film integrated circuit; IC4 selects MC145436 type telephone for DTMF decoding integrated circuit; IC5 selects CD4514 or MC14514 type 4-16 line decoder integrated circuit; IC6~IC13 (D1~D16) select CD4013 type double D flip-flop integrated circuit.
S1 to S16 can use a combination keyboard or a micro-motion button for a telephone.
K1 ~ K16 select 9V medium power DC relay.
Both BC1 and BC2 use a 3.58MHz quartz crystal oscillator.
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