For simplest functions (flashing indicator and/or beeper) you don`t need a printed circuit board, directly weld onto the legs of the PIC, an end of heat-shrinkable sleeve and that is. Go ahead with softness if you do not want to burn the integrated circuit (do not use an iron of more than 30 W)! Do not rectify the legs of the circuits, that weaken
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s them, you will be likely to break them or worse than they break later in flight. - I put a LED connected on the output flashing indicator 0, 5 seconds. Of course it is not necessary if you do not want the flashing indicator! On the LED the + is the longest leg (side GP2 on the diagram). For a strong luminosity, resistance in series on the LED can be changed by one 220 Ohms (the current output under 5V is then 22mA and remains compatible with specifications ) For PCM radios with fail-safe at the reception, the loss of the transmitting signal is detected by the receiver. The position of the channels is maintained during the loss of the transmitting signal by receiver itself. Thus we can`t detect a loss of the model by turning the radio OFF. With this kind of radio, I thus advise you to fulfill the function " loss model " on leg GP2 " flashing indicator 1/4 Hz ". The black wire of the buzzer will be connected at "minus -", the red wire with GP2. When you lost your model, think of rocking the switch starting the beep sound! After power on reset, the buzzer will sound during 5 seconds. - to program yours starting from HEX file provided here (2 versions are given : one for 12C508 PIC the other for the 12C509), or even compile the C source also provided (but I ask you not to market it). Imagine that, compared to the neutral position of a radio channel (depth example), one has two positions to the top, two positions to the bottom...
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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