Postman (or woman) brought envelope containing Chinese Saleae Logic analyzer today. Lets see if fierce 20€ price is justified for this plastic brick. I also tried to reverse engineer one Sony VAIO wireless keyboard which may be more difficult that it first seemed. Continue reading
Front panel awaits to be replaced with aluminum panel, if I ever get it somehow machined.
This gallery contains 11 photos.
Happy first birthday for this blog!
As you might have noticed, I have a thing about VDF displays and old calculators. This time I found old Sharp EL-8118 which is pocket calculator with basic arithmetic operation with some nice additions. It includes features like settable floating/fixed decimal, sqrt’s and powers, percent and delta percent, constant pi, 1/x or x^(-1) and memory.
It had had battery leak in somewhere its lifetime, but nothing was damaged bad enough and cleaning switch & battery contacts fixed it. It has wear and scratches, but is still sturdy and beautiful calculator. Continue reading
I got the Hello World! Finally serial communication part is working, next part is to get display refreshing and sift register writing to work efficiently as it must be constantly multiplexed. Continue reading
I have yet published basic schematics and code for display project. Atmega 16 work as display controller. It will read data from uart serial port, place it to text buffer and simultaneously multiplex display trough segment voltage buffers and huge digit shift register. ASCII text is converted to segment data and font can be created with computer program. Continue reading
GitHub codestuffthing for firmware, now 1.3 version with better alarm light handling and user input needed to reset 88:88 error.
Hello, I’m Ketturi Fox, and I’m addict. Yes, I have VFD addiction, Vacuum Fluorescent Displays, I mean. I have big box of them, waiting for appropriate project (which probably will never come). This time I found big nice displays from old digital scale.
I found an old crystal oscillator from my junk bin, and tough it would make interesting teardown. It is much bigger than new ones, but it works just same way as its little brothers.
Shall we look inside? Continue reading