Use a remote control with your computer, view infrared signals on a logic analyzer, or capture and replay remote control buttons. USB Infrared Toy v2 has an improved IR transmitter and several new features. There`s lots of interesting infrared projects on the web. Serial port infrared PC remote control decoders have been popular for years, Ian pub
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lished a USB version at Hack a Day. The TV-B-Gone is a popular kit that turns most TVs off by transmitting POWER codes with infrared LEDs. The IR Toy combines all these projects into an upgradable USB dongle, with some extra functions, like a simple logic analyzer that visualizes remote control signals. The 28pin PIC 18F2550 with USB is back in IR Toy v2. This chip is used in lots of hobby projects that need USB, but it`s starting to show its age. 5volt parts like the 18F2550 are increasing in price, while the 3. 3volt versions with more features (18F25J50) keep getting cheaper. The PIC18F2550 has gone up about $1 since we started v1, it accounts for about 50% of the price increase in v2. Everything runs at 5volts, so power is taken directly from the USB port without regulation. A single power supply pin gets a 0. 1uF decoupling capacitor (C1). The USB features require a 20MHz external oscillator (Q1, C5, C6). The chip is initially programmed thorough a 5pin ICSP header. A 10K pull-up resistor (R1) and a diode (D1) on the MCLR pin protect the rest of the circuit from the 13volt signal used during programming. The USB transceiver has an internal 3. 3volt regulator that requires a 220nF (0. 22uF) external capacitor (C2). The extra capacitor footprint to use with 0. 1uF capacitors was removed. An infrared demodulator (RX1) decodes infrared remote control transmissions. The demodulator looks for a signal on a carrier wave and...
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to....
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This....
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,....
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the....
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
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