The local club needed another scoring box, and the things cost a fortune. So naturally I thought, "Hey, I can totally build one of those!". And I did, sort of.First attempt was way too elaborate. it was a whole enclosure with EL panels...
For my GPSDO project I’ve opted for a Piezo 2940210 VCOCXO at 10 Mhz. There is a dearth of information on this particular module available online.(A notation notation: I utilize “E” notation to indicate orders of magnitude; thus 1.5E-6...
After gutting a car for the engine in an auto shop class, I found myself with a trove of interesting spare parts. I recycled the car's RPM gauge into a clock that sweeps out the seconds from 1 to 60 and displays a digital time readout. A Basic Stamp...
Think of this tablet as not as some toy, but as a computer in whole. This Tablet is designed to be Modular by using USB as the main communications line. Though it is a modified version of USB so that way any one attachable card can be a power source,...
Using an old Fairplay Scoreboard LED matrix to display scrolling messages (one of which was also for the kiddos birthday, scrolling "HAPPY BIRTHDAY")A PIC 16F870 was used for the controller. The factory controller was ditched as I was unsure how...
The battery in my Lenovo laptop were slowly losing part of it's capacity. The remaining capacity was 69% (good score after 2,5 years) but I need the really long battery time while travelling. The battery statistics according to Lenovo power utility:So,...
From an exhibition in 2007 in Canada: --- from testing in my home studio in 2006: --- as shown at a mall in Estonia in 2004: --- as shown in a segment on Sekai Gyoten News in 2006:
Preview: What the system diagram illustrates is that you can use our prebuilt web app to recognize, monitor, remote control & program your robot. Alternatively, you can build your own app (or use someone else's) that is customized for your application....
Nakano, K., et.al.(refs below) describe two versions of a small stack machine suitable for implementation on an FPGA and they give the Verilog source code on their web site. The design was ported to the DE2 board and extended to have a richer set of...
For a bimolecular reaction involving two molecules A and B, with concentrations [A] and [B] and a rate constant K, the probability of the reaction occuring (from mass action) will be K[A][B] . Assuming a time step which is short enough to make the probability...
To synthesize nice sounding musical notes you need to control spectral content of the note, the rise time (attack), fall time (decay), and the change in spectral content during attack and decay. Also it is nice to have at least two independent musical...
The general approach using DDAs will be to simulate a system of first-order differential equations, which can be nonlinear. Analog computers use operational amplifiers to do mathematical integration. We will use digital summers and registers. For any...
We can use the FPGA to do fast numerical integration to solve differential equation models of neurons. This page describes a couple of neuron models and their solution by DDA techniques. Eugene Izhikevich developed a simple, semiempirical, model of cortical...
DPCM (2-bit samples)A version of the DPCM algorithm can be implemented using very little processing time. A 2-bit/sample compressor/decompressor was written in Matlab to encode and to make a packed C header file, and then to do a test-decode. Note that...