This project article was originally written in 2004 when most computers had parallel ports. This is no longer the case, so much of this information is now outdated. The Mini RC Car Project has been one of my favorites to do. If you haven`t checked that project out, please read through that one before starting on your own. I`ve gotten a few e-mails
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requesting a guide and since the software is done, all that is required is to construct the hardware. This is the second time I`ve done this project, using totally two completely different cars. The remote PCBs (electronics) were almost identical in both, so I`m assuming most all mini rc remotes are very similar, so this guide should be able to apply to all makes and models. In order to get a cable that goes from the back of the remote`s PCB to the computer, we need to make a hole in the remote`s plastic case for the wires to go through. Any size hole will do, as long as it`s big enough for your wires to fit through. Drill the hole closer to the back of the remote, if possible. That just makes it so the cable won`t have to bend as much. Turn over the PCB (printed circuit board). Under each button there are four solder joints. These are actually (2) sets of (2) joints. These are highlighted in the picture on the right. Identify the wire that the negative side of the battery was connected to (see wire indicated in the picture). This will connect to one of the large green areas on the board. For each switch, two of the solder joints will be located in this green region. Leave those joints alone. What we are concerned with, is the positive "side" of the switch. For each switch, you need to identify which side is negative and which is positive. Solder a wire onto each positive side and one wire to a negative terminal (there are...
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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