The Micon-GHS clock is a very accurate handy clock for mobile observation with some intelligent facilities. `Note that `Micon` is a short form for `Microcomputer` in Japanese. `The clock was operated by referring the GPS (Global Positioning System) signal, so that it can attain the accurate timing near as the atomic clock operates. An onboard exc
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lusive micro chip (PIC16F873) makes it possible to monitor the information of geodesic information (Longitude, Latitude, etc. ) on demand. Real-time display mode of some astronomical times (apparent solar time, Greenwich sidereal time, local sidereal time, hour angle of Polar star) is also available. Onboard devices are operated by 5 V DC charge. However, the "Micon-GHS clock" has a DC-DC converter from 12 V DC to 5 V DC (1. 5 W) for useful power supply, so that we can use it with connection to car battery (cigar lighter). = Detailed specifications of the "Micon-GHS clock" (ver. 2. 1) Voltage of power supply: 10 V DC to 18 V DC Power consumption: 1. 5 W (maximum) Accuracy of timing sync. : within 500 ns *Note that response of LED device has a delay about 40 micro seconds or so, experimentally. Time signal output method: LED beat (flasher), 2 lines 7 segments LED, speaker tone, line output Forenotice of minute signal: LED beat (flasher), speaker tone, line output Display of timing information: Year, Month, Date, Hour, Minute, Second (UTC sync. ) Display of geodesy information: Longitude, Latitude, Height of receiver antenna, Height of Geoid, Acquisition number of GPS satellites, HDOP value, Condition of GPS positioning Accuracy of positioning: within 10 m horizontally, but with a few 10 m error vertically Display of astronomical time: Apparent solar time, Greenwich sidereal time, Local sidereal time, Hour angle of the Polar...
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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