Die Suche ergab 33 Treffer

von Hougaarden
Sonntag 27. Dezember 2020, 13:42
Forum: Kundenprojekte
Thema: KA2284 - Electret Microphone Level Meter
Antworten: 0
Zugriffe: 206

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) 10-mal heruntergeladen
von Hougaarden
Donnerstag 3. September 2020, 09:21
Forum: Kundenprojekte
Thema: SG90 Micro Servo 9g controller with NE555
Antworten: 0
Zugriffe: 720

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: 940

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: 1176

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: 851

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: 851

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: 1133

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
Antworten: 0
Zugriffe: 1412

Ron Hoffman's Model Train Speed Controller

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: 1683

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: 1683

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: 1761

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) 1707 mal betrachtet
von Hougaarden
Mittwoch 23. Oktober 2019, 10:42
Forum: Kundenprojekte
Thema: AtTiny13 FireFly
Antworten: 0
Zugriffe: 1458

AtTiny13 FireFly

The fireflies have no practical use but are great fun to watch, and are very decorative. FireFly - Front.jpg Many thanks to Alexander Weber for the design and software: https://tinkerlog.com/howto/synchronizing-firefly-how-to/ It also appeared in ELEKTOR: https://www.elektormagazine.com/magazine/ele...
von Hougaarden
Mittwoch 2. Oktober 2019, 11:06
Forum: Kundenprojekte
Thema: Model Railroad Capacitor Discharge Unit
Antworten: 2
Zugriffe: 1047

Re: Model Railroad Capacitor Discharge Unit

Thank you for adding the link, it explains exactly why I built this CDU.
The risk of a burnt solenoid is hereby greatly reduced.

PS The schematic in the link is precicely like the one I have found.
PPS Added two more pictures.
von Hougaarden
Dienstag 24. September 2019, 15:44
Forum: Kundenprojekte
Thema: Model Railroad Capacitor Discharge Unit
Antworten: 2
Zugriffe: 1047

Model Railroad Capacitor Discharge Unit

Very efficient, fast charging CDU for model rail point motors.
von Hougaarden
Montag 23. September 2019, 18:10
Forum: Kundenprojekte
Thema: 555 & 741 Tester
Antworten: 0
Zugriffe: 1557

555 & 741 Tester

20190924_083915.jpg 20190924_084304.jpg A very simple GO-NO-GO tester for two of the most popular IC's. I found it here: http://www.radioradar.net/en/measurements_technics/tester_555_timer_741_op_amp_ics.html, here: http://www.theorycircuit.com/ic-555ic-741-tester/, and here: https://expertcircuits...
von Hougaarden
Dienstag 17. September 2019, 16:28
Forum: Kundenprojekte
Thema: Model Train - Steam Engine Sound Module
Antworten: 0
Zugriffe: 1717

Model Train - Steam Engine Sound Module

This is a copy of the "Soundmodul Dampflok Bausatz" of Conrad (order nr. 190713 - 62 EAN: 4016138190717)
Not exelent, but a good illusion.
Stoomlocomotief - Geluidsgenerator (a).jpg
Stoomlocomotief - Geluidsgenerator (a).jpg (226.35 KiB) 1547 mal betrachtet
von Hougaarden
Donnerstag 25. Juli 2019, 07:02
Forum: Kundenprojekte
Thema: Model Train Speed Controller
Antworten: 0
Zugriffe: 1619

Model Train Speed Controller

An analog model train speed controller for automatic (analog) train traffic and as a stand-alone speed controller.
The schematic is taken from the book: "Elektronische modelbaanbesturing" by P. De Bra (publisher Elektuur/Elektor).
To use this controller you need the "Triangle wave generator".
von Hougaarden
Freitag 12. Juli 2019, 06:59
Forum: Kundenprojekte
Thema: 75Hz Triangle generator for model train speed controller
Antworten: 2
Zugriffe: 1011

Re: 75Hz Triangle generator for model train speed controller

There are two good reasons why I draw my diagrams with LochMaster: 1) I don't have the sPlan program. 2) In this way I keep all relevant drawings together. With sPlan, of course, it would look much better and it would probably be much easier to draw. But as my former boss sometimes said: A good tail...
von Hougaarden
Dienstag 9. Juli 2019, 20:36
Forum: Kundenprojekte
Thema: 75Hz Triangle generator for model train speed controller
Antworten: 2
Zugriffe: 1011

75Hz Triangle generator for model train speed controller

This module can generate a triangle wave for several speedcontrollers (to be pubished soon).
It is a copy from the 1985 Elector book (in Dutch) "Elektronische modelbaansturing".
My model trains have been laying around on the attic for over 30 years, it's time to get them going again ;)
von Hougaarden
Donnerstag 7. März 2019, 10:19
Forum: LOCHMASTER SOFTWARE Support
Thema: WIN10 - Decimal and thousand separators must differ!
Antworten: 2
Zugriffe: 1219

Re: Windows 10

Thank you very much. The settings were indeed wrong.
The problems that I experienced in Excell have now also been resolved.

Best regards. Wilfried Vermeire

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