the multi-channel system design of wireless safety protection of the infrared detection principle
#infrared detection
#wireless
#safety protection
#multi-channel
#security system
#sensor
#remote monitoring
#motion detection
#home automation
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Composed of TDC1808/TDC1809 digital coding control circuit diagram
The TDC1808/TDC1809 is a pair of wireless remote control transmitter and receiver components. They utilize an internal antenna to transmit both digital and analog signals. These components are suitable for various wireless remote control devices. Key features include compact size,...
Wireless two-tone electronic doorbell circuit diagram
The transmitter circuit is activated by pressing the SB button. Components D1, D2, R2, R3, and C4 form a low-frequency oscillator that controls an audio oscillator made up of D3, D4, D5, and D6, allowing them to operate alternately. The...
calradio
Cal-(IT)2 is developing several generations of general broad application radio/networking test platforms for wireless research and development. CalRadio I is the first generation. It provides a simple, low-cost platform for 802.11b development from the MAC layer and up. It accomplishes...
6m wireless remote control switch circuit
This example describes a wireless remote control switch featuring reliable operation and practical characteristics, capable of remotely controlling a 6-channel device within a 6-meter range for household electricity. The wireless remote control switch circuit consists of a wireless transmitter and...
wireless telephone line spy circuit
This design outlines a phone bug circuit. The wireless telephone line spy circuit is capable of transmitting phone conversations to a nearby FM radio. The circuit must be connected to a standard phone line. In the circuit, the first transistor...
Low Power Wireless Audio Power Amplifier as baby mointor
This appears to be an infrared (IR) transmitter. IR signals do not penetrate walls, and it is assumed that this device is intended for use in a room separate from the one in which the user is located, rendering it...
Object motion detector circuit diagram
The core component of the motion detection circuit is the motion detection chip IC1 (KC778B). The signal frequency from the PIR sensor is low, ranging from 0.1Hz to 10Hz, while the bandwidth is quite broad, which the chip will optimize....
Automatic plant waterer
The unit consists of a sensor, timer, and electric water pump. The sensor is embedded in the soil, and when dry, the electronics operate the water pump for a preset time. The circuit is composed of a level-sensitive Schmitt trigger,...
Wireless Car AlarmCircuit With 2N3904 Transistor
The following circuit illustrates a Wireless Car Alarm Circuit Schematic Diagram. Features include the ability to detect sounds within a 20-meter radius, a 1/16 wavelength antenna, and the capability to transmit radio signals up to 2 kilometers. Q1 serves as...