A fresh new Website has been setup exclusively for my DIY projects, Electronics experiments , Analog Synthesizer repair and Modular Synthesizer design. Vintage IC' s shop has moved as well .
After fussing around with installs and updates on the Ubuntu 8.10 Kernel 2.6.7.11 . I realized my Network card Realtek 8102 would no longer work afte the updates 2.6.7.11 . But on a fresh install with Kernel 2.6.7.7 it sure would . Looking at the to be installed components I couldn't find anything that would overwrite my Realtek drivers. But indeed it must have been the Kernel itself.
So the fix for UBUNTU 8.10 if your card works in the fresh install and it don't after the update then this is what you need to do:
Edit your GRUB boot loader in Grub Editor and revert the Kernel back to 2.6.7.7 also add " noapci no acpi " in your init string.
With this project I wanted to save chemicals and with it the enviroment. Plus it was a good lesson on metal working and basic robotics lessons. I must say it turned out pretty well. The only thing that I am having trouble with is the motors are kind of small and therefore slow. Second the weight of the Dremel mill that I use is to heave and construction isn't that steardy. Today I would use bigger motors and a different Z-Axis. Still this thing works wonders and it works great. I am actually amazed I did this all by myself .
This is my second CNC and CNC controller . I am very proud of the Controller it is totally reliable and doesn't need fans that make a bunch of noise like I did in the previous PROXXON project.
This is my version of Eric Brombaughs dsPICFun board. The original gerber files and schematics can be downloaded at his site here . This board can generate four Control Voltages with a 12-bit DAC7554 for outputs and has four inputs hooked up to the ADC port. It also has 4 potentiometers hooked up to the ADC board two buttons and a rotary Encoder for values and settings. It has a LCD port, DCI port , UART and SPI/I2C . Now this is where it gets interesting : the flexibility of the board is imense as it be configured for MIDI, RS-232 or USB. DCI port can take any Audio CODEC and I assume some memory handling might be possible with another µCU via the SPI port. Giving us a great and flexible dsPIC based Audio development sytem.
My Idea is to have some wavetables that leave the digital domain and are feed into a SSM2044 VCF that then is controlled by the CV of this powerful µCU dsPIC33FJ128GP708 running @7.37MHz.
But there are plenty other prjects that can be made with this thing like a MIDI to CV converter which is almost a waste and processor overkill.
I must say that I didn't have any trouble building this thing and can only recommend it to everyone in the SDIY community.
This is my version of the XILINX parallel download cable programmer for CPLDs and FPGAs.
The whole project can be downloaded in the download section for free.
Last Updated ( Wednesday, 14 January 2009 )
Variable clock generator 4MHz -50MHz
Written by Administrator
Friday, 12 December 2008
This interesting and very useful circuit I have found on this site here . It is a variable clock generator ranging from 4MHz up to 56MHz. The ranging can be set with the 4-Dip switches and a 500Ω potentiometer. It really comes handy when you are trying to experiment with with different clocks for you Microcontroller, Microprocessor. It even can generate higher clock speeds for your FPGA and CPLD projects.
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