Die Suche ergab 42 Treffer

von Hougaarden
Freitag 31. März 2023, 11:57
Forum: Kundenprojekte
Thema: TonUINO
Antworten: 0
Zugriffe: 1564

TonUINO

Nice gift for the little ones (with children's music and fairy tales) or for the elderly (a jukebox with music from the past).
You can also play your favorite music yourself.
TonUINO-blue.jpg
TonUINO-blue.jpg (828.71 KiB) 1560 mal betrachtet
von Hougaarden
Freitag 18. November 2022, 12:07
Forum: Kundenprojekte
Thema: 555 Timer with Relay (for model railroad and...)
Antworten: 1
Zugriffe: 795

555 Timer with Relay (for model railroad and...)

This circuit can be used to extend signals in time.
A small relay can thus switch lighting or other things that operate on low voltage on or off for a certain period of time.
I think this is useful in model railroading, but other applications are also possible.
von Hougaarden
Freitag 9. September 2022, 10:45
Forum: Kundenprojekte
Thema: Harry Porter's Relay Computer Clock
Antworten: 0
Zugriffe: 1060

Harry Porter's Relay Computer Clock

I was fascinated by Professor Harry Porter's relay computer: http://web.cecs.pdx.edu/~harry/Relay/

Since the whole computer is too complex and expensive, I started with a simplified version of the computer clock.
von Hougaarden
Montag 24. Januar 2022, 12:10
Forum: Kundenprojekte
Thema: DIY 555 Timer
Antworten: 0
Zugriffe: 1500

DIY 555 Timer

DIY 555 timer IC (no schematic).LM4
(680.08 KiB) 129-mal heruntergeladen
Read this first please: https://www.instructables.com/Build-Your-Own-555-Timer/
This is where I got the schematic.
Looks really nice with the colored transistors (I use nailpolish: it's cheap and there is no need to wash the brush)
von Hougaarden
Montag 22. November 2021, 10:19
Forum: Anregungen
Thema: F4 and CTRL-Z
Antworten: 0
Zugriffe: 1365

F4 and CTRL-Z

Wouldn't it be nice to add the office function F4 (repeat the last operation) in a next update? It takes 5 mouse clicks, for example, to change the color of a connection. When many connections have to be changed of color and/or thickness , it takes a while. Multiple selection works too, but you alwa...
von Hougaarden
Montag 9. August 2021, 08:45
Forum: Kundenprojekte
Thema: 4-BIT Binary Counter
Antworten: 0
Zugriffe: 1653

4-BIT Binary Counter

A very simple and small digital binary counter with internal and external clock.
4-BIT Binary Counter.LM4
(609.32 KiB) 152-mal heruntergeladen
All the files are here: https://1drv.ms/u/s!AuX-mO-T-I8rjNE4C2y ... Q?e=w7RqBY
von Hougaarden
Dienstag 23. März 2021, 15:26
Forum: Kundenprojekte
Thema: 0.5 - 2048Hz 5VDC Pulse Generator
Antworten: 0
Zugriffe: 1730

0.5 - 2048Hz 5VDC Pulse Generator

A digital pulse generator for testing digital circuits, especially digital clocks. Very useful combined with a 5VDC power supply. Update: Discarded "D3" from output while it gave interference at testing CMOS IC's, the output could pick up noise while it was low. A resistor (10k) to ground wil also s...
von Hougaarden
Montag 1. März 2021, 09:00
Forum: Einsteigerfragen / FAQ
Thema: Split does not "split" potential
Antworten: 3
Zugriffe: 1974

Re: Split does not "split" potential

I 'm sorry, it was my mistake. :oops:
The board I designed consisted of tracks and pads. I redesigned it with only pads at the ends and tracks with holes between them.
Everything is OK now. Even the smallest split will split the potentials now.

Regards, Wilfried Vermeire.
von Hougaarden
Donnerstag 18. Februar 2021, 11:00
Forum: Einsteigerfragen / FAQ
Thema: Split does not "split" potential
Antworten: 3
Zugriffe: 1974

Split does not "split" potential

I just noticed that using split has no effect on the potential of a copper-strip.
Making the standard split a bit wider on one side does the trick.
To split or not to split.jpg
To split or not to split.jpg (78.99 KiB) 1974 mal betrachtet
Regards, Wilfried Vermeire
von Hougaarden
Sonntag 27. Dezember 2020, 13:42
Forum: Kundenprojekte
Thema: KA2284 - Electret Microphone Level Meter
Antworten: 1
Zugriffe: 1551

KA2284 - Electret Microphone Level Meter

A gadget to put on the table when one receives noisy guests :D
KA2284 - Electret Microphone.LM4
(743.08 KiB) 150-mal heruntergeladen
von Hougaarden
Donnerstag 3. September 2020, 09:21
Forum: Kundenprojekte
Thema: SG90 Micro Servo 9g controller with NE555
Antworten: 0
Zugriffe: 2503

SG90 Micro Servo 9g controller with NE555

I found the original schematic here: https://model-railroad-hobbyist.com/node/26088?page=2
It works very well with the small SG90 servomotor, I suppose it works with any 5V servomotor.
The servomotor can move to two adjustable positions with a max. angle of rotation of approx. 90 °
von Hougaarden
Donnerstag 14. Mai 2020, 14:09
Forum: Kundenprojekte
Thema: Morse Code Tone Generator
Antworten: 0
Zugriffe: 2516

Morse Code Tone Generator

Found on Youtube: https://www.youtube.com/watch?v=j1TMmyhzqCk&t
Except SOS I don't know any morse code but it was very educational to build the sine generator.
von Hougaarden
Donnerstag 26. März 2020, 16:21
Forum: Kundenprojekte
Thema: IR-remote tester
Antworten: 0
Zugriffe: 2720

IR-remote tester

Small, cheap and easy to build. Everybody should have one ;) (If you have a dozen or so remote controles, like me) The photo transistor is connected the wrong way, according to the original schematic, but it does not work connected the "right" way. Perhaps the Chinese put the notch in the wrong plac...
von Hougaarden
Dienstag 24. März 2020, 10:29
Forum: Kundenprojekte
Thema: Magnet Polarity Tester
Antworten: 4
Zugriffe: 2856

Re: Magnet Polarity Tester

Bernd, You are absolutely right about the latching outputs. You can avoid this by using two 3141 Hall sensors next to each other, one with the text in front and the other with the other side in front (the front detects one pole, the back the other). If you are in a hurry to get a APX9141, I can send...
von Hougaarden
Sonntag 22. März 2020, 10:04
Forum: Kundenprojekte
Thema: Magnet Polarity Tester
Antworten: 4
Zugriffe: 2856

Magnet Polarity Tester

A very simple but very useful magnet tester.
A North-pole in front of the APX9141 makes the red LED light up
A South-pole makes the green LED light up.
I bought the APX9141 very cheap on ebay (about 4€ for 10 pieces).
von Hougaarden
Sonntag 1. März 2020, 13:14
Forum: Kundenprojekte
Thema: Signal Tracer/Injector (Velleman)
Antworten: 0
Zugriffe: 2627

Signal Tracer/Injector (Velleman)

A simple, but useful, signal tracer/injector you can buy from "Velleman".
Of course it's more fun to make it yourself ;)
von Hougaarden
Samstag 11. Januar 2020, 16:00
Forum: Kundenprojekte
Thema: Ron Hoffman's Model Train Speed Controller (Rev.3)
Antworten: 0
Zugriffe: 3018

Ron Hoffman's Model Train Speed Controller (Rev.3)

The best controller I have made (up to now). It's based on the schematic from Ron Hoffman: https://www.gadgetronicx.com/diy-model-train-controller-project/ I implemented the rotary/guitar-switch as used in an other controller to get a more realistic feel. 14-01-2020: Schematic is revised for 12VDC o...
von Hougaarden
Mittwoch 6. November 2019, 10:58
Forum: Sonstiges
Thema: Not possible to add attachments
Antworten: 4
Zugriffe: 3998

Re: Not possible to add attachments

I've been trying for a week now... still not able to upload files. :?:
von Hougaarden
Freitag 25. Oktober 2019, 16:31
Forum: Sonstiges
Thema: Not possible to add attachments
Antworten: 4
Zugriffe: 3998

Not possible to add attachments

I had some troubles before, but now it is not possible for me to add attachments :?:
This error message appears:
ERROR
Could not upload attachment to ./files/18678_573be73d3108000853f8414b84652f89.
Regards, Wilfried.
von Hougaarden
Donnerstag 24. Oktober 2019, 13:20
Forum: Kundenprojekte
Thema: AtTiny85 Running Light
Antworten: 0
Zugriffe: 3343

AtTiny85 Running Light

This is a very simple running light based upon the AtTiny85.
The code is badely written but it is very easy to understand and to change to your own desire.
Files can be downloaded here: https://1drv.ms/u/s!AuX-mO-T-I8rh4sJueB ... w?e=gHFuSh
Running Light - Frontaanzicht.jpg
Running Light - Frontaanzicht.jpg (249.09 KiB) 3289 mal betrachtet

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