Comments for 5Volt

Comment on A simple light to sound converter – with video ! by admin

admin — Mon, 01 Mar 2010 11:05:01 +0000

@Derek and Andrew,
try removing C3 (the capacitor between pin 1 and 8 of the LM386). This lowers the gain of the amplifier to 20 against 200 as with the cap mounted.
For now I can’t add anything else…
Please let me know.
Best regards, for now.
Alex

Comment on A simple light to sound converter – with video ! by Derek Holzer/TONEWHEELS

Derek Holzer/TONEWHEELS — Sun, 28 Feb 2010 09:36:35 +0000

PS… I have made a PCB for this circuit here:

http://www.umatic.nl/tonewheels_technical.html

If there are improvements please let me know and I will update it.

Best from Berlin,
Derek

Comment on A simple light to sound converter – with video ! by Derek Holzer/TONEWHEELS

Derek Holzer/TONEWHEELS — Sun, 28 Feb 2010 08:21:52 +0000

@Andrew,

I’ve used this circuit for a workshop now, and I can definitely say that there are some problems with the LM386 self-oscillating! One thing to look at is whether there are any ground loops in your circuit. If the ground of the LM386 has more than one path to the – of the battery, that is a ground loop and will cause the amp to oscillate by itself.

HTH,
Derek

Comment on Infrared remote control receiver for Arduino by admin

admin — Fri, 19 Feb 2010 09:21:19 +0000

Thanks for sharing, Tom.
I’m Happy this could help.
Best regards
A.

Comment on Infrared remote control receiver for Arduino by tom

tom — Thu, 18 Feb 2010 16:57:21 +0000

THANKS! I’ve been smashing my head against a desk for 3 days trying to get an ATTiny13 to understand any remote codes at all, I’ve modified this one to work!

Again thanks!

Comment on Infrared remote control receiver for Arduino by admin

admin — Wed, 17 Feb 2010 13:24:40 +0000

You’re welcome. Thanks for sharing !
Best regards
A.

Comment on Infrared remote control receiver for Arduino by Veli

Veli — Sun, 14 Feb 2010 20:26:25 +0000

As a beginner I spent a lot of time with the rc5 stack from mikrocontroller.net triying to get it to work as an arduino sketch for a “quick” testing the TSOP4138 on Arduino Diecimila
With your script, at first no LED went on, no serial output, “It cannot be that easy”, I thought, the highlight came with the oldest of my three remote controls (for some generic TV). It works! Thanks a lot.

Comment on Infrared remote control receiver for Arduino by admin

admin — Sun, 14 Feb 2010 18:57:55 +0000

The IR receiver should be fine: to the datasheet your receiver is active low, not high. I mean : when 38kHz IR is received the output goes low. The same logic applies to the IR receivers I tried.
Please read the comments and check if any of them helps you, otherwise please return. At this stage I can’ t help.
Best regards

Comment on Infrared remote control receiver for Arduino by on4tux

on4tux — Sat, 13 Feb 2010 17:11:59 +0000

I’m a real newbie (got my board yesterday ) but already playing with RC5 on my mega board. The code is not working, but I’m not sure if it is due to my IR controller (IRM38bl) which is active high? Only if it receives IR, the pulses make it go low.

Comment on Waveform display on a VGA monitor by admin

admin — Fri, 29 Jan 2010 08:12:06 +0000

Caio Joaquim,
I typically use an old limited functions demo of Orcad for drawing the parts of the schematics, then the pieces are exported (within Orcad) in DXF vector format. DXFs are then imported in Illustrator, which I have occasionally access to, to be glued together and sort of beautified.
Ciao e grazie

Best regards
A.