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The circuit described is recommended for SSTV applications utilizing a sound card connected to a computer. It follows the JVComm style of interface and can also be employed for RTTY and PSK31 applications. Many users modify this circuit to...
This hardware is designed to display the number of cars in a parking lot. The system utilizes a six-segment display; however, a single display is sufficient for the intended function. It employs the segment driver IC SN7447AN along with...
Interface the DS1820 temperature sensor with a microcontroller. The first pin is connected to ground (GND), the third pin to VCC, and the second pin to the microcontroller. When the temperature is sensed, the sensor provides readings to the...
The Spartan-3an board features external 5V relay interfacing, as illustrated in the accompanying figure. The ULN2803 acts as a driver for the FPGA I/O lines, with the driver's outputs connected to the relay modules. A PTB connector is available...
The Spartan-3an board features eight slide switches, as illustrated in the accompanying figure. The push button inputs are typically in a low state and transition to a high state only when the button is pressed. These push buttons are...
The Clearcom type intercom bus operates at a significantly lower level than the Sony bus. Consequently, the signal sent to the camera operator's headset requires amplification, while the signal from the camera operator's microphone needs to be reduced. To...
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