I always enjoy visiting other people's electronic project sites, so I thought
why not make my own project site? Besides showing to others the things I have made,
these pages also serve as documentation for myself. The projects you find here are all
fully functional and are extensively documented including the software. You may copy it
distribute it or sell it as far as I am concerned, but never hold me responsible
for possible accidents, injuries or any other disasters.
A Talking NIXIE Alarm Clock! This Nixie Alarm clock will wake you up with
a personal wake-up message or sound. A "wav" file stored in EPROM is played
using only a few counters and a DA converter.
Numitron Clock with battery back-up.
A nice small Numitron clock with a battery back-up that keeps it running
when the clock is disconnected from the mains. It uses a 12F675 PIC controller
with a 32.768 kHz crystal connected to Timer1.
A E1T Decade Scaler Tube raised from the dead.
The E1T Decade Scaler Tube is very elegant counting tube
used in the fiftees before the digital revolution. In my current project I have
brought an old E1T tube back to life and have it counting
If you have one of these tubes and you have no use for them, please send me an e-mail,
I would love to make a clock out of them!
Decatron Clock Project.
Instead of first finishing a project and than writing a web page on it, this page
reports on the progress on my current project in a web-log style!
One Digit E1T Clock
A simple clock with a remarkable tube. In this clock the E1T is controlled by a moderns PIC
microcontroller using a very simple interface. Be careful, the anode voltage of the
E1T is derived directly derived from the mains!
A simple, minimal component count, single digit Nixie clock that fits into a glass test-tube.
Now with PCB!
Ring Counter Variations
Everything you always wanted to know about (neon) Ring Counters. A must for every neon enthousiast!
A Meter Clock for Eugene.
A simple clock that uses a set of analog meters to display the time, with ambilight!
A nice and small project to do something useful with your old meters on a rainy Sunday afternoon.
The uTracer, my tube curve-tracer project sequel:
The µTracer, a miniature tube curve tracer
This miniature tube curve tracer uses pulsed measurements to measure the I-V curves of radio tubes.
Due to this special construction the high voltages can be generated with a tiny boost converters, eliminating the need for "heavy" power supplies.
The project is presented in the form of a "web-log"
The µTracer V3, a sequel to the µTracer V2 weblog
After building the original µTracer, it is my plan to introduce new features and improvements. In this new weblog page
the progress is recorded for my own reference and documentation and for anybody else who is interested.
µSCOPE Dutch version
Ongetwijfeld s'werelds kleinste en simpelste oscilloscoop! Een 8 pins PIC processor
sampled de analoge ingang en genereert een video signaal dat de golfvorm op een
normale televisie laat zien.
µSCOPE English version
Undoubtedly s'worlds smallest and simplest oscilloscope! An 8 pins PIC processor
samples the analog input signal and generates a (PAL) video signal which shows the
waveform on a normal television set.
Play the classic Pong game again on your TV using only one 8 pin PIC processor!
Nostalgia from the seventies! For everybody who has an old SC/MP (INS8060)
processor lying around, why not re-live your first steps in micro-computers
and build this retronic SC/MP computer running the NIBL Tiny-BASIC interpreter?
Colored LEDs for Jan Verhoeven's farewell present!
A simple PIC program that produces a series a slowly fading and changing random
colors in a three color LED. It can be used as a stand alone gadget, or you can run
it in the back-ground to liven up your PIC application.
A Tiny 80(C)31 Basic Board
A tiny but powerful stand-alone Basic Computer based on the 8031/8051/8052 processor. Includes an extensive
overview of all MCS BAsic-52 dialects for this processor.
An “elegant” circuit that can switch between two lamps without the need to add a new mains wire.
A page primarily written for myself for sentimental reasons.
Restauration of a P87BQ receiver
During a Holiday to the South Coast of Britain I found a fantastic Pye P87BQ battery receiver.
I bought it a a souvenir of the delightful village of (Old) Hastings.
an account of the restauration, and a study of the development of battery-tubes at Mullard/Philips.
An Electronic 90V Anode/Plate Battery
A "power"-inverter which emulates a 90V plate battery for vintage battery tube receivers.
Special attention has been paid to elliminate any RF interference normally associated with DC/DC converters.
The project is presented in the form of a "web-log"
History of Electronics Projects:
The making of the E1T
The E1T scaler tube, who were the people who invented it, where was it developed and produced?
A search into the history of a fascinating tube.
The EF50, The Tube that Helped to Win the War.
The history of a pioneering tube that was developed by Philips Research and that, hours before Holland
was invaded, made its escape to Britain where it played an important role in Radar.
A story of: History, People and Technology.