This project is a GPS based clock, which also displays the present date, automatically compensates for daylight savings time, displays current speed, and maximum speed, along with your present heading in degrees with respect to true north. The original firmware and concept came from Ken, VK7KRJ, who was kind enough to grant me permission to use hi
Click here to download the full size of the above Circuit.
s source code and his original circuit idea in this project. I have modified the source code to work with the 16x4 display module that I have used, as well as the EM 406A GPS engine that I have built into the box. I have discovered that from one GPS engine to another, the NMEA sentences can vary slightly, depending on which chipset is used in the GPS engine. The EM 406A is a SiRf III based GPS, and Kens source code was written in 2004, so it is compatible with older GPS`s, but required modification to work with my SiRf III GPS. I basically had to stop the code from loading the $GPVTG sentences from the GPS module, as this is where the original firmware got stuck. I also added the code for the unit to log the maximum speed achieved, and keep it on the display indefinately, which makes this unit useful for logging the maximum speed achieved by a model car, or a dirt bike, or any other vehicle not already equipped with a speedo.
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.....
characters left: