![]() There are pin mappings to Atmega8 and Atmega 168/328 as well. Below is the pin mapping for the Atmega2560. Therefore I include SPI.H and Ucglib.h using UcglibILI934118x240x320HWSPI ucg(/cd/ 26, /cs/ 24, /reset/ 22) It works really quick and fine. ![]() I already work with an Arduino DUE using hardware SPI Hardware SPI with sclk76, data75 for the communication to an QVGA Display. Mega’s PIN 50 is connected to Uno’s PIN 12, Mega’s PIN 52 is connected to PIN. In both boards we connect the GNDs to achieve common ground, and also Pin 10’s together. May I know what pin connections you have from the TFT to the mega? Also what software you used to make the schematic? I'd like to make one too for mine to make the connections clearer for all in this forum. A diagram showing the correspondence between the pins on an Arduino board and those of the ATmega2560 microcontroller. Hellow together There is a Problem with hardware SPI with on Arduino Mega and I need some help. In the following example code provided, an Arduino Mega(2560) as a master transfer message to an Arduino Uno who is the slave of the SPI communication. But the Arduino Mega has only pin 53 as spi. I've read this article: Article and it's telling me I need to use two different spi-pins to communicate between my rfid shield and my sd-card shield. The Mega 2560 is based on AVR RISC Architecture. Now both devices use the same spi pin (53). The Pinout of Arduino Mega is shown below: The description of pins present on the Arduino board are listed below: ATmega2560 Microcontroller - The Atmega2560 is a CMOS (Complementary Metal Oxide Semiconductor) low powered 8-bit microcontroller. But I will attempt to make a shield for the display soon after the project. Now I want to combine it with a rfid-sensor chip like this one: rfid-shield. I will post a photo of the casing when it is printed(This will be in 9hrs). I also need 10 other pins for 3 sensors + sd card module that will be added to the project. The screen is to fit tightly inside a casing (this is also why I am using the mega pro instead of the usual one). Thank you so much for the instructions on how to make the shield but I'm hoping to keep my project as compact as possible. 50 (MISO), 51 (MOSI), 52 (SCK), 53 (SS) are used for SPI communication. If I'm not mistaken that should reduce the 5v to 3.3v? For the other pins, I used the TXB0104 that I got from I made the voltage divider only for the CS and DC pins in junction between 1 1k resistor and another 2 1k resistors.
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