wireless communication between 6578
#wireless communication
#RF
#transmitter
#receiver
#data transmission
#signal processing
#microcontroller
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#IoT
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10 or more switches using a microcontroller
There are several methods to read multiple switch inputs using a reduced number of microcontroller unit (MCU) pins. One approach involves using an analog MCU pin to read multiple switches by assigning a unique voltage to each switch through a...
RF Decibel Meter Circuit
A DIY RF decibel (or power) meter is an essential instrument in any radio workshop. However, accurate, wideband models can be quite costly.
A DIY RF decibel meter serves as a valuable tool for measuring the power levels of radio frequency...
Small Radio Transmitters
Information about building a small radio transmitter, which has a PCB measuring 1.75" x 2.5" (45mm x 68mm) and has a range of approximately 30 yards. The documentation states that the frequency range is 100-108 MHz, but it has been...
Augmenting a Microcontroller Circuit
To create a versatile and generic microcontroller board, the information provided thus far is sufficient. It covers the essential components needed to achieve this.
The design of a microcontroller board requires careful consideration of various factors to ensure versatility and functionality....
Two Homing type Direction-Finding
The antenna consists of two vertical dipoles. Diodes in each dipole allow the circuit to select which antenna is active at any given time. When a positive voltage is sent up the coax feedline, diode D1 conducts and D2 blocks,...
Active Antenna for Medium Wave
This circuit is designed to amplify the input from a telescopic whip antenna. The preamplifier is intended to operate within the medium waveband, covering frequencies from approximately 550 kHz to 1650 kHz. The required tuning voltage ranges from 1 to...
MICROCONTROLLER BASED AUTOMATIC ROOM LIGHT CONTROLLER
This project involves an automatic room light controller with a bidirectional visitor counter using a microcontroller. It is designed to manage room lighting and accurately count the number of individuals present. When a person enters the room, the counter increments...
Antenna Combiner
The Antenna Combiner (A3021) is an active combiner designed to accommodate four 50-ohm coaxial antenna connections. It combines the signals from these four inputs, resulting in a net gain of approximately +11 dB. The A3021 is specifically intended for use...
Receiver Audio Circuit
This simple receiver AF amplifier can supply several hundred milliwatts to an 8-ohm speaker. The gain is approximately 200X. If high gain is not required, C2 can be removed, resulting in a gain of 20. R1 and C6 are essential...