Short-Range FM Radio Station

This article shows you how to build a small radio station at home and share music with others. The station can also be used for making announcements in colleges, industries, hospitals, schools and other places using a condenser mic amplifier circuit. In this project an FM transmitter V2.0 module is used, as shown in Fig. 1. It is available on www.ebay.com and www.amazon.in. The module can modulate your voic ...

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ARDUINO UNO FM AM TRANSMITTER CIRCUIT SI4713

The most important part is the construction of a functional sample of a Arduino Uno software-defined one transmitter. After agreement with the supervisor and current options, she was elected concept with SI4713 digital circuit... Electronics Projects, Arduino Uno FM AM Transmitter Circuit SI4713 "arduino projects, microcontroller projects, " The most important part is the construction of a functional sample ...

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Arduino Solar Radio

Solar charging, via the panel on the back. * 12 position switch to select channel number * Seek up / seek down controls and 'store' button * RDS display of call sign * Frequency display * Battery voltage display * Solar charging current display The software still needs a bit of attention. Its fine if the signal is good and RDS comes in quickly, but if not, then adjusting the volume or changing channel takes ...

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SPI interface to the FlySky/Turnigy 9x

Interfacing a RC radio to a microcontroller is a bit of a pain, especially if you want a lot of channels, because you have to time each channel's output individually. An AVR only has one 16 bit timer with two compare channels, so either you can only use two channels at full resolution or you have to waste lots of cycles sampling it. The other hassle is having loads of wires running from the rx to the micro. ...

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Arduino SOS signal with 8ohms speaker and LED blinking

SOS is the commonly used description for the international Morse code distress signal (· · · — — — · · ·).  [read more on wiki] Requirements: 1) Arduino 2*) 8 Ω speaker 3*) 150 Ω or similar resistor 4) 5mm RED LED 5) Hook-up wires 6) Any breadboard * Ω = Ohms Step 1: Schematic Hook-up wires as shown (original pic here). Make sure that LED's anode and cathode correctly connected. [read more on wiki] Step 2: ...

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Radio link between two Arduino boards

I was looking for a way to handle wireless communications between two Arduino boards. Other options like Xbee or Bluetooth were going to cost $50 to over $100. Then I found a cheap RF transmitter and receiver at Sparkfun. The total cost is only $9! Here are a few limitations to RF solution: Communications is only one way. If you wanted two way communications you’d need to buy two receivers and two transmitt ...

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TiDiGino, the Arduino-based GSM remote control

Using an ATmega 2560 and therefore the heart of Arduino, we have developed a universal remote control with GSM. This allows  to control 2IN/2OUT, DTMF key, gate control and GSM thermostat activated remotely. We have already presented several remote control with different functions. But now we want to present the best remote control ever made with Arduino. The remote control is easier, thanks to the availabi ...

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Arduino IR Transmitter & Receiver w/ LEDs Flickering Issue

I have an Arduino Uno connected to two IR transmitters and respective receivers. Basically, when one of the receivers detects a beam break, I have a strand of LEDs display a pattern. This all works in principle, but the problem is that when the IR transmitters and receivers are connected to the Arduino, the LEDs flicker with random colors. The specific parts I'm using: Adafruit 36mm 12V LEDs (http://www.ada ...

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Remote key-switch operation

One of my colleagues, Dr. Shane Mayor, has built a very nice LIDAR system for atmospheric research. It's located at a remote site, at the end of a dirt road, and everything about the system can be controlled remotely except the main pump laser power supply. That supply has a key-switch, which has to be manually turned to activate the system. He asked me to see what I could do to make it all remote-controlle ...

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Radioactive isotope decay simulation

My students need to learn LabVIEW —I know, it's proprietary software, and expensive, but until a viable open-source equivalent comes along we're stuck with it— and one of the exercises I have them do is to make a program to analyze radioactive decay. This gives them experience in using counters, plotting data in real time, curve fitting, etc. The problem arises when I have a dozen students and not so many g ...

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Over the Counter Kitchen Radio using Arduino

This project used the Si470x FM radio receiver and an ardurino to make an over the counter kitchen radio. These parts had been purchased for a different build that unfortunately met a premature end. The concept for this project is simple. Play my favorite news and music radio stations while having a form factor that does not take up space on the kitchen counter. I have a small push button that toggles betwe ...

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All in one Remote using Arduino

Introduction August, 2007  One of my other hobbies is photography, and, about a year ago, I purchased a new digicam - a Panasonic FZ30. I joined the Panasonic forum on the dpreview site. One of the posters, a programmer and electronic hobbyist, designed a nifty wireless remote using a very inexpensive RF transmitter/receiver combination that he found on eBay. After he'd perfected that, he began designing an ...

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