Arduino by Davis: “Re: Réalisation d'un afficheur de vitesse pour voiture” plus 19 more

Re: Réalisation d'un afficheur de vitesse pour voiture
Re: uso particolare 7805
Re: storing ir remote codes in non-volatile memory
Re: Auto Tuner for CB Radio
Re: Clock-Shield (RTC und DCF77 auf einem Shield) *Entwicklung*
Re: Trouble using keypad coding
Re: Colour changing LED?
Re: Test 1.5v battery mAh with analogread.
Re: 74HC595 decouple - correct?
Re: Sensore di temperatura collegato con 10m di filo
Re: Réalisation d'un afficheur de vitesse pour voiture
Re: Programm / Funktion einmal beim Start ausführen
Re: GUI to define variables
Re: storing ir remote codes in non-volatile memory
Trouble using keypad coding
Re: 74HC595 decouple - correct?
Re: storing ir remote codes in non-volatile memory
Re: calculating error, quickest way
Re: How to get to configuration files on a Mac
Re: Arduino UNO @ 20MHz

Re: Réalisation d'un afficheur de vitesse pour voiture

Posted: 23 Dec 2012 01:40 AM PST

Pour répondre à Cristian_R:
Le convertisseur fréquence/tension est une bonne piste pour le futur de mon projet, pour l'instant je veux comprendre ce qui ne fonctionne pas dans le prototype.
Par ailleurs, l'arduino ne fait que deux choses, de façon rép...

Re: uso particolare 7805

Posted: 23 Dec 2012 01:40 AM PST

ok allora farò come dici, grazie mille :-)
quello che voglio ottenere nel mio primo progetto è mostrare su un lcd e salvare in un txt nella sd card i seguenti dati:
-nr di giri
-valore lambda
-temperatura gas scarico

La mia idea è poi di importare il ...

Re: storing ir remote codes in non-volatile memory

Posted: 23 Dec 2012 01:37 AM PST

Quote from: drhoff on Today at 02:48:16 AM

The thing I wanted to do differently was to be able to save codes and play them back without having to know the protocol.

In that case, other than altering the quanta ...

Re: Auto Tuner for CB Radio

Posted: 23 Dec 2012 01:37 AM PST

Quote

I need to adjust the "low power" to be the most efficient for my antenna

No, that does not make sense.

Quote

it adjusts the qrp capacitor

The term low power capacitor is totally meaningless here.

What you want to adjust the the...

Re: Clock-Shield (RTC und DCF77 auf einem Shield) *Entwicklung*

Posted: 23 Dec 2012 01:36 AM PST

Hallo zusammen,
ich bin jetzt soweit das der uC des "Shields"
1. Die DCF77 auswertet
2. die RTC beschreibt und wieder ausließt
3. in Power Down geht (wacht alle 8 Sekunden auf)
4. Mit Jumper einstellbar jede Stunde oder ein mal am Tag neu synct.
5. Das...

Re: Trouble using keypad coding

Posted: 23 Dec 2012 12:58 AM PST

Turn on verbose output during compilation and post what you get.

Re: Colour changing LED?

Posted: 23 Dec 2012 12:58 AM PST

Astonishing really (and that's from someone writing this on an iPhone)

Re: Test 1.5v battery mAh with analogread.

Posted: 23 Dec 2012 12:58 AM PST

While this would definitely suit my needs, I was hoping to get the actual current. That way every few seconds I could see what the current was then at the end I could get an actual mAh reading rather than just a voltage/time number. Could I still do that?

Re: 74HC595 decouple - correct?

Posted: 23 Dec 2012 12:54 AM PST

You're right.
It will work as is, in the original layout.

BUT it looks like OP will have the boards manufactured (being double-sided)... and since there's no cost penalty in making your boards look pretty, better designed and more robust... why not? ...

Re: Sensore di temperatura collegato con 10m di filo

Posted: 23 Dec 2012 12:52 AM PST

Quote from: Michele Menniti on December 22, 2012, 06:23:00 PM

Ora quello che io non capisco è come tu arrivi a leggere quella temperatura, vedo che Poolo ti suggeriscono interventi di correzione e probabilmente è giusto, ma for...

Re: Réalisation d'un afficheur de vitesse pour voiture

Posted: 23 Dec 2012 12:30 AM PST

Le principe du capteur est le bon, Fréquence = k x Vitesse.

Mais il est possible que tu loupes un cycle de temps en temps, si l'arduino est en train de faire "autre chose" (calculs dans un autre bout du programme) que de surveiller la broche au bon mom...

Re: Programm / Funktion einmal beim Start ausführen

Posted: 23 Dec 2012 12:30 AM PST

Quote from: Udo Klein on December 22, 2012, 10:37:46 AM

Ich versteh immer noch nicht warum Code der nur einmal laufen soll nicht in setup() laufen sollte.

Das müsste doch gehen.

Re: GUI to define variables

Posted: 23 Dec 2012 12:27 AM PST

Thanks, EEPROM looks promising, any help getting the Searial.read to work? I tried to put together my own version of the blink light if searial.read =='H' sketch, and it seemed like it was not working, but Ill try again tomorrow and see what I can figu...

Re: storing ir remote codes in non-volatile memory

Posted: 23 Dec 2012 12:27 AM PST

It's also nice having something you can make more of and/or modify/fix.

Quote from: drhoff on Today at 01:21:50 AM

Thanks for the reply. I was thinking that if the bootloader can write to flash, then so could I. Howev...

Trouble using keypad coding

Posted: 23 Dec 2012 12:25 AM PST

im having trouble in compiling this coding, 'Keypad does not a name type'. im already download and placed the keypad library.. anyone can help me?? thank you in advanced...
[code]#include <Keypad.h>

const byte ROWS = 4; // Four rows
const byte COLS = 3...

Re: 74HC595 decouple - correct?

Posted: 22 Dec 2012 11:50 PM PST

If you look closely at the application and parts used there is nothing wrong with the original layout. for several reasons. I do hope I don't make the PCB experts unhappy BUT there isn't enough current capacity per package to warrant bigger or more Pow...

Re: storing ir remote codes in non-volatile memory

Posted: 22 Dec 2012 11:48 PM PST

Yes, I've looked at that. The thing I wanted to do differently was to be able to save codes and play them back without having to know the protocol. His code has the raw mode if it can't id the protocol, which is similar to what I'm doing, but he is usi...

Re: calculating error, quickest way

Posted: 22 Dec 2012 11:36 PM PST

How much did that board cost? Lol I already spent 70$ on this, and I'm finally just in the final proggramming phase working on the gui,
but unless someone can figure out that formula perhaps after a certain frequency I will just have it directly chang...