This page provides links to software and hardware designs contributed by Handy Board users. If you would like to contribute some work of your own to the Handy Board community, please contact Fred Martin. Thanks! George Musser contributed an adaptation of Motorola`s FFT (fast fourier transform) routines to Interactive C. Available are a ASM file a
Click here to download the full size of the above Circuit.
nd ICB file. (updated Mon Oct 22 18:56:44 2001) Doug Rinckes provided a PDF manual for using the Vector 2x, an associated C file, and a program for getting long-range sonar readings. (Fri Feb 9 09:39:08 2001) Dirk Stueker created a page with information on how to use the Sharp GP2D12 sensor with the Handy Board. (Mon May 22 06:51:36 2000, updated Tue Feb 26 21:16:57 2002, updated Mon Aug 4 10:43:06 2003) Gary Livick contributed a servo driver that works on the Port A, bit 3 pin (the beeper pin). He says it works even if you leave the beeper connected (and don`t mind a little clicking). See his message including source code. (Thu Nov 18 12:58:15 1999) Curt Mills, WE7U has been working on Handy Board libraries for the gcc/hc11 compiler. Download the patches to make gcc work with the 68HC11 and also the Handy Board libraries at his FTP site. See also Curt`s home page. (Tue May 11 06:55:45 1999) Barry Brouillette developed a tutorial and software drivers for using the fantastic Sharp GP2D02 optical distance sensor with the Handy Board. The Expansion Board is required. (Wed Mar 3 12:16:50 1999; links updated Tue Nov 6 08:12:58 2001) Kam Leang contributed a low-cost, high power motor driver design compatible with the Handy Board. See his notes and a PDF schematic. (Sun Dec 13 00:12:57 1998) 16-Channel IR Proximity Sensor. Keith Soldavin contributed a schematic and a description of a 16-channel IR modulation and detecting circuit,...
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: