FM transmitter and Dark sensor
A dark sensor can be converted to a simple FM transmitter using the following components. This FM transmitter is very sensitive and it has transmitting range of 30 meters.
BUILDCIRCUIT HAS RELEASED A NEW DIY FM TRANSMITTER KIT.
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1 Transistor FM Transmitter DIY Learning Kit
US $9.50Add to cart
1 Transistor FM Transmitter DIY Learning Kit
US $9.50Item Location: Sydney, AustraliaYou can use this FM transmitter/microphone in two ways:a. Audio transmission using electret microphone: You can transmit your voice to FM radio with the electret microphone.b. Audio transmission connecting speaker stereo jack to the audio source: For hearing a better sound, you may connect it to your computer, iPod or mp3 player using a speaker jack.
59 in stock
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2CH X 100W + 200W 2.1 Channels Bluetooth Audio Amplifier Board – TSA7500
US $59.95Add to cart
2CH X 100W + 200W 2.1 Channels Bluetooth Audio Amplifier Board – TSA7500
US $59.95TSA7500 2CHx100W + 220W 2.1 channels audio amplifier board comes with AudioB pro Bluetooth module.
It has a perfect class-D architecture (based on TPA3221) and 2 channels have 100W power outputs and another one channel has 200W power output.
All the channels are capable of outputting nominal power simultaneously and continuously. This board can be powered by any DC 12V-30V power supply. It can be used to drive any 4Ω or 8Ω passive speakers.
121 in stock
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LED Chaser Using NE555, CD4017, Infrared Receiver And Photoresistor
US $9.95Add to cart
LED Chaser Using NE555, CD4017, Infrared Receiver And Photoresistor
US $9.95The kit does work normally like a normal LED chaser kit. In addition to its obvious features, it has a photoresistor that allows you to change the speed of the chasing LEDs. In the old LED chaser, the speed is controlled with a variable resistor. In this kit, we have used a photoresistor to work as a variable resistor. As the light falling on the photoresistor changes, the speed of the LEDs also changes.
22 in stock
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CD4026- 1 Digit Up Counter Module
US $4.95Add to cart
CD4026- 1 Digit Up Counter Module
US $4.95- It works as an UP counter. You can instantly test the up count of the display using a flashing LED.
- It is a handy tester for 0.56″ seven segments common cathode display.
- Works with Arduino or NE55 or whatever that gives pulse.
- You can concatenate as many displays as you want.
- With this, you can build your own digital objects counter.
- Size: 15mmx49mm
46 in stock
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CD4029 Based Up And Down Counter For Arduino And NE555
US $5.95Add to cart
CD4029 Based Up And Down Counter For Arduino And NE555
US $5.9542 in stock
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3 Digit Digital Objects Counter With Laser Module
US $14.95 – US $19.95Select options
3 Digit Digital Objects Counter With Laser Module
US $14.95 – US $19.95This is 3 digits digital object counter kit for electronics beginners and hobbyists. You can use this counter for counting objects or people entering into a room. It can be used by engineers for learning about digital counters.
This digital object counter works with a laser module and a photoresistor and there are three seven segment displays displaying numbers from 000 to 999. The laser module is directed towards the photoresistor of the counter module and objects are moved between the two modules. Each time an object passes between the two modules, the seven-segment displays show increment in numbers from 000 to 999.
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LCD Shield For Arduino-Bluetooth Android Hobbyists
US $11.95Add to cart
LCD Shield For Arduino-Bluetooth Android Hobbyists
US $11.95This LCD shield is designed for experimenters who are interested in Android- Arduino, and Bluetooth experiments.
Features:
- RGB LED
- A white 5mm LED
- Light-dependent resistor ( LDR) based light sensor.
- LM35DZ-temperature sensor.
- 16×2 LCD display.
- There is a header for HC-SR04 ultrasonic range finder.
6 in stock
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1.8″ Photoresistor And Laser Operated Medium Digital Objects Counter
US $24.95Add to cart
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Photoresistor And Laser Operated Large Digital Objects Counter With 2.3″ Displays
US $29.95Read more
Photoresistor And Laser Operated Large Digital Objects Counter With 2.3″ Displays
US $29.95A laser light module illuminates the photoresistor continuously and whenever any object obstructs the laser light falling on the photoresistor, the counter increases the count. You can use this 3 digit digital objects counter for counting objects or people entering a room. It can be used by engineers for learning about digital counters.
Out of stock
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2.3″ Common Anode Seven Segment Display Driver
US $19.95Add to cart
2.3″ Common Anode Seven Segment Display Driver
US $19.95- This is a 74LS192 based up and down counter driver module for driving 2.3″ seven-segment display. The module has headers on two sides to receive up/down count signals and to concatenate with another driver module. You can concatenate unlimited displays.
- The module can be triggered with NE555, flashing LED, Scoreduino-A, basic trigger module, and Arduino. It can also be triggered by anything that generates a clock pulse.
- It works ‘strictly’ with 9V power supply. Do not exceed more than 9V.
9 in stock
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2.3″ common cathode seven segment display driver
US $11.95 – US $12.95Select options
2.3″ common cathode seven segment display driver
US $11.95 – US $12.95This is a CD4026 based up counter driver module for driving 2.3 inches common cathode seven segment display. The module has headers on two sides to receive up count signals and to concatenate with another driver module.
The module can be triggered with NE555, flashing LED, and Arduino. It can also be triggered by anything that generates a clock pulse.
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SMD DIY Kit NE555 Oscillator CD4017 LED Chaser Circuit
US $4.95Add to cart
SMD DIY Kit NE555 Oscillator CD4017 LED Chaser Circuit
US $4.954 in stock
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The circuit may work but it relies on a “Q-factor” from the coil and capacitor in the tank circuit to produce a high voltage. This high voltage gives the circuit a good range. Firstly the coil and capacitor should be near each other. The coil should not have long leads. and a 22n capacitor should be across the supply to give the circuit better performance. The value of C2 is too high. It should be 10p. The coil should be 5 turns. The electret mic should not be connected directly to the base of the transistor.
what about fm receiver .you haven’t talk anything about fm receiver