![]() ![]() ![]() I have plenty of room for both the Uno and Mega. GET STARTED DATASHEET Main Features The Arduino Mega 2560 is a microcontroller board based on the ATmega2560. I'm running a 16x2 LCD for display on that project, and I had a thought that maybe I could send info from the MEGA to the UNO that will run the LCD. Overview Mega 2560 Rev3 The 8-bit board with 54 digital pins, 16 analog inputs, and 4 serial ports. The diode limits the voltage to one diode drop above Vcc. When DTR goes from low to high it will push the /RESET voltage upwards to Vcc + DTR voltage. This can happen on the rising edge of DTR. Hello, I use pin 28 on an arduino Mega to control a transistor (aside of other I/O) I realised the board reset when state of pin 28 changes I tried another pin. The value of the internal pull-up resistor will be in the range of 20K to 50K. Firstly, it protects the /RESET pin from overvoltage on the /RESET signal. This topic was automatically closed 120 days after the last reply. An additional feature of the Digital IO pins is the availability of internal pull-up resistor (which is not connected by default). I have an Arduino mega, and it's got plenty of pins - but I'm getting a little concerned about the power draw that I'm going to be using for a project (I've posted about it a couple time here and here, but trying to keep separate issues. All these Digital IO pins are capable of sourcing or sinking 20mA of current (maximum 40mA is allowed). ![]()
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