PIN 2 ON ARDUINO MEGA 2560 SERIAL
PIN 2 ON ARDUINO MEGA 2560 CODE

PIN 2 ON ARDUINO MEGA 2560 CODE

We split tasks I give him more 'manual' stuff, and I work on the code and design. And while doping this project, I am teaching electronics to a mate. No wonder it didn't work! A little context here I have not done electronics since I have left college, 5 years ago. There are pin mappings to Atmega8 and Atmega 168/328 as well.

PIN 2 ON ARDUINO MEGA 2560 SERIAL

Below is the pin mapping for the Atmega2560. It includes digital input/output pins-54, where 16 pins are analog inputs, 14 are used like PWM outputs hardware serial ports (UARTs) 4, a crystal oscillator. In doing so, I realized that my MOSI was wired to the ground of the module and the ground to the MOSI pin. A diagram showing the correspondence between the pins on an Arduino board and those of the ATmega2560 microcontroller. When I saw that, I went ahead and started to measure voltages (I have just watched a couple of Dave's video recently, and he says 'thou shall check voltages'). I tried what you told me, and tweaked my oscilloscope to get better results for the picture, and while doing boosting the intensity of my faded out CRT, I saw a bunch of noise on the CS, MOSI and MISO pins on the board that I couldn't see before due to the faint image. Do these HIGH/LOWs show on your oscilloscope - both on the pin and on the ICSP header? Detach your SD reader and try the following code that will just toggle pins 50-53 HIGH and LOW every 100ms. 50 - MISO - Green - Channel 0 51 - MOSI - White - Channel 1 52 - CLOCK - Yellow - Channel 2 53 - ENABLE - Blue - Channel 3 ICSP1 - Pin1 - MISO1 - Green - Channel 4 ICSP1 - Pin5 - MOSI1 - White - Channel 5 I appreciate this is a 'It works on my machine' but the Logic Analyzer shows the same data when connected to MOSI1 and MISO1 pins (middle of the board) It shows nothing when I connect to the MOSI2 and MISO2 pins which are on the second ICSP2 header by the Digital 13 pin. Quote from: Avacee on March 27, 2017, 10:34:03 pm And you are definitely using the ICSP1 header in the middle of the board between the chip and reset button? I have the same micro-SD Card Reader so knocked it up on the breadboard with the Logic Analyzer - See photos The Logic Analyzer shows the start of the SPI communication from SD.begin().

Pin 2 on arduino mega 2560