This kit is based upon an original design by Jan G0BBL and provides a multi-faceted replacement for the older `Rocky` serial interface kit. The kit includes: The control of the programmable Oscillator on the V6. 3 RXTX (and the older, now retired Lite + Xtrall V8. 3 RX) kits, over a USB cable, using the I2C protocol of two serial streams (the clocki
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ng stream, named "SCL", and the data stream, named "SDA"). With the proper software drivers, this kit removes the 16 frequency constraint of the RX V8. 3 and RXTX V6. 3 kits For more information on the firmware and its capabilities/configuration, refer to Bob G8VOI`s Users Manual and Fred PE0FKO`s configuration manual. You should access and download relevant portions of these guides to assist you with the setup in the final phase of this build. The builder should read each page completely, taking care to compare the "bare board" photos with the completed stage photos, before undertaking actual construction. For the non-expert builders among us, this site takes you through a stage-by-stage build of the kit. Each stage is self-contained and outlines the steps to build and test the stage. This ensures that you will have a much better chance of success once you reach the last step, since you will have successfully built and tested each preceding stage before moving on to the next stage. If you are not experienced at soldering (and even if you are somewhat experienced at soldering), refer to Tom N0SS`s excellent tutorial on basic soldering techniques. For the more adventurous, there is a process using solder paste and an electric oven called the reflow process, which can be used to install all the SMT chips to one side of the PC Board. This is documented by Guenael Jouchet in the following Youtube segment: You will need a...
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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