Bibliothek nötigįor(byte i = 0 i < mfrc522.uid. #include //Ist schon vorhanden -> keine zus. Here my code: //Steckkonfig auf dem Arduino Mega: When I've connected my rfid-module and my sd-card module to the arduino mega no module is working. (Example nano's mosi pin pairs with LCD's miso pin or nano's miso pin pairs with LCD's mosi pin etc.) And at last can I use the both the LCD and the SD card with just with one and only arduino nano (What I am really trying to learn is how to use an arduino nano to load photos from the SD card to the TFT screen. I worked a bit on it and now I can use any digital Pin as SPI for my sd-card module. PS: All comments needed are translated in egnlish Serial.println("Playing: Nat King Cole - Orange Colored Sky") Ĭase 'b': tmrpcm.pause() digitalWrite(SD_ChipSelectPin, HIGH) break Serial.println("Playing: Michael Jackson - Smooth Criminal") Serial.println("Playing: Childish Gambino - This is America") Serial.println("Playing: Beach Boys - Woudlnt It Be Nice") Serial.println("Playing: Pokemon - Battle Theme 8-Bit") Serial.println("Playing: Monkey Island - Main Theme 8-Bit") Serial.println("Si wurden als VIP-Benutzer registriert!") Ĭase '1': digitalWrite(SD_ChipSelectPin, LOW) //for testing Serial.println("Sie wurden als Standardbenutzer registriert!") *if (!mfrc522.PICC_IsNewCardPresent()) //Überprüfen, ob Karte vor Lesegerätįor (byte i = 0 i < i++) Einfach nach "TMRpcm" suchen und Bibliothek einbinden If it helps here is my code: #include //Zus. But when I connected my SD-Card Module, it couldn't be played. I tried that in my code and wired my cable to pin 47 and made it and output. So that I understand correctly: I can choose any digital Pin I like to be the CS (SS) if I make it an output? Now I know that it isn't a shield thank you. Sorry for that I wasn't sure how to call it. This is not recommended because you bypass the LD1117S50CTR 5V voltage regulator and have to make sure that the voltage level is stable.PS to previous: looking at your links, neither your SD nor RFID is actually a shield You can also power power the Arduino microcontroller from the 5V pin. You cannot power the board with the barrel jack and VIN GPIO at the same time, because there is a polarity protection diode, connecting between the positive of the barrel jack to the VIN pin, rated at 1A. Therefore you are able to power the Uno with an external 9 Volt battery. The voltage has to be between 7V and 12V. VIN Pin: If you use an external power supply like a battery, you can use the VIN pin.If you buy a DC power jack, make sure the power adapter of the plug supplies a voltage between 7V and 12V. DC Power Jack: It is possible to use the DC power Jack as power supply.The standard USB connection delivers 5V and allows you to draw 500mA in total. USB cable: The most popular and also the easiest way to power the microcontroller is via USB cable.Like the Arduino Uno, you can power your Arduino Mega in three save ways because a voltage regulator provides a regulated and stable voltage for the ATmega2560 microprocessor: In my opinion you should be save to draw a current up to 100mA. The LP2985-33DBVR has a maximum output current of 150mA but on the official Arduino website, the maximum current is limited to 50mA. The maximum current draw from the USB connection is therefore reduced to 500mA.īecause the Arduino Mega has 3.3V pins to supply external electrical devices, there is a second voltage regulator build in, that reduces the voltage from 5V to 3.3V. There is no need for a voltage regulator because the USB connection is already regulated by the USB output from your PC or laptop. The Arduino Mega can also be powered via the USB port. The maximum output current of the LD1117S50CTR is 800mA. Besides a higher input voltage than 12V has no advantage. But an input voltage between 7V and 12V is recommended to use the Arduino Mega over an extended period of time because otherwise the voltage regulator produces a lot of heat that can damage the microcontroller. The LD1117S50CTR provides a stable 5V output for the ATmega2560 and has a maximum input voltage of 15V.
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