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Topic: 8x8 LED Matrix und Atmega 168 PA PU extern (Read 1 time) previous topic - next topic

Tholscha

Hi.
Ich habe diese Woche angefangen mich mit dem Thema Multiplexing einer 8x8 LED Matrix auseinander zu setzen.
Soweit habe ich alles vorbereitet und bestellt.
Ich würde jetzt gerne meinen Atmega 168 PA PU nicht auf dem Arduino sitzen lassen sondern mit in die Schaltung einbauen.
Meine Suche über Pläne für die externe Beschaltung vom Atmega blieben erfolglos und deswegen wende ich mich jetzt ans Forum.

Mit freundlichen Grüßen,
Tholscha :-)

CrossRoads

Easy way: MAX7219
http://www.taydaelectronics.com/catalogsearch/result/?q=max7219

Hard way:
Connect 8 pins to anodes with 270 ohm current limit resistors.
Connect 8 Pins to cathodes

1 Anode  High, 1 Cathode Low ONLY for 1 LED on.

Viel Glück in Ihrem Experiment.
Designing & building electrical circuits for over 25 years. Check out the ATMega1284P based Bobuino and other '328P & '1284P creations & offerings at  www.crossroadsfencing.com/BobuinoRev17.
Arduino for Teens available at Amazon.com.

Tholscha

Thanks, but this is not the answer for my problem....
My problem is the Atmega 168 on my Arduino.
I want my Atmega put out from de Arduino and than put in my Matrix.
I need now each components to operate outside my Atmega.
- Quarz
- Resistors
- etc......
my search at the internet was unsuccessful....

fungus

No, I don't answer questions sent in private messages (but I do accept thank-you notes...)

Tholscha

Thx Fungus :-D
Does it matter which type I have?
Are all connected to the same?

CrossRoads

168,328, connect the same way

Connection to MAX7219 varies if you SPI.transfer() commands to drive it, or LED library that is based on slower shiftout() t ype commands.
Designing & building electrical circuits for over 25 years. Check out the ATMega1284P based Bobuino and other '328P & '1284P creations & offerings at  www.crossroadsfencing.com/BobuinoRev17.
Arduino for Teens available at Amazon.com.

fungus

No, I don't answer questions sent in private messages (but I do accept thank-you notes...)

Tholscha




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