Arduino Mega2560

• Quick overview
• Notes
  • 1
  • 2
• Connections
  • Buttons
    • Analog inputs
  • Rotary encoders
  • Potentiometers
  • FSRs
  • Single-color LEDs
  • RGB LEDs
  • Displays
  • DIN MIDI
  • Touchscreen

Quick overview

• Power: USB B or Power jack 7-12V [1], Mini USB [2]
• MCU: ATmega16u2 + ATmega2560
• DIN MIDI: Yes [3]
• LED indicators: Yes
• Digital inputs: 32
• Digital outputs: 14
• Analog inputs: 16
• Schematic: Link

If this board is used with Mux Shield v2, the amount of supported IO changes to following (firmware for this specific variant must be used):

• Digital inputs: 32
• Digital outputs: 8
• Analog inputs: 48

Notes

1

Power can be applied to any connector.

2

Only on small Meduino variants.

3

This board doesn't have DIN MIDI connectors and required additional components so those have to be added to board in order to be used. The following schematic should be used:

Pinout is listed in DIN MIDI section.

Connections

Buttons

Button #	Pin 1	Pin 2
0	52	GND
1	50	GND
2	48	GND
3	46	GND
4	44	GND
5	42	GND
6	40	GND
7	38	GND
8	36	GND
9	34	GND
10	32	GND
11	30	GND
12	28	GND
13	26	GND
14	24	GND
15	22	GND
16	53	GND
17	51	GND
18	49	GND
19	47	GND
20	45	GND
21	43	GND
22	41	GND
23	39	GND
24	37	GND
25	35	GND
26	33	GND
27	31	GND
28	29	GND
29	27	GND
30	25	GND
31	23	GND

Analog inputs

Button #	Pin 1	Pin 1	Pin 2
32	A0	GND with 10k resistor	5V
33	A1	GND with 10k resistor	5V
34	A2	GND with 10k resistor	5V
35	A3	GND with 10k resistor	5V
36	A4	GND with 10k resistor	5V
37	A5	GND with 10k resistor	5V
38	A6	GND with 10k resistor	5V
39	A7	GND with 10k resistor	5V
40	A8	GND with 10k resistor	5V
41	A9	GND with 10k resistor	5V
42	A10	GND with 10k resistor	5V
43	A11	GND with 10k resistor	5V
44	A12	GND with 10k resistor	5V
45	A13	GND with 10k resistor	5V
46	A14	GND with 10k resistor	5V
47	A15	GND with 10k resistor	5V

Rotary encoders

Encoder #	Pin 1	Pin 2	Pin 3
0	52	GND	50
1	48	GND	46
2	44	GND	42
3	40	GND	38
4	36	GND	34
5	32	GND	30
6	28	GND	26
7	24	GND	22
8	53	GND	51
9	49	GND	47
10	45	GND	43
11	41	GND	39
12	37	GND	35
13	33	GND	31
14	29	GND	27
15	25	GND	23

Potentiometers

Potentiometer #	Pin 1	Pin 2	Pin 3
0	5V	A0	GND
1	5V	A1	GND
2	5V	A2	GND
3	5V	A3	GND
4	5V	A4	GND
5	5V	A5	GND
6	5V	A6	GND
7	5V	A7	GND
8	5V	A8	GND
9	5V	A9	GND
10	5V	A10	GND
11	5V	A11	GND
12	5V	A12	GND
13	5V	A13	GND
14	5V	A14	GND
15	5V	A15	GND

FSRs

FSR #	Pin 1	Pin 2	Pin 2
0	5V	A0	GND with 1k resistor
1	5V	A1	GND with 1k resistor
2	5V	A2	GND with 1k resistor
3	5V	A3	GND with 1k resistor
4	5V	A4	GND with 1k resistor
5	5V	A5	GND with 1k resistor
6	5V	A6	GND with 1k resistor
7	5V	A7	GND with 1k resistor
8	5V	A8	GND with 1k resistor
9	5V	A9	GND with 1k resistor
10	5V	A10	GND with 1k resistor
11	5V	A11	GND with 1k resistor
12	5V	A12	GND with 1k resistor
13	5V	A13	GND with 1k resistor
14	5V	A14	GND with 1k resistor
15	5V	A15	GND with 1k resistor

Single-color LEDs

Note: current-limiting resistors are required in order to avoid damage to the board.

LED #	Anode	Cathode
0	15	GND
1	14	GND
2	2	GND
3	3	GND
4	4	GND
5	5	GND
6	6	GND
7	7	GND
8	8	GND
9	9	GND
10	10	GND
11	11	GND
12	12	GND
13	13	GND

RGB LEDs

Note: current-limiting resistors are required in order to avoid damage to the board.

RGB LED #	Anode (Red)	Anode (Green)	Anode (Blue)	Cathode
0	17	16	15	GND
1	14	2	3	GND
2	4	5	6	GND
3	7	8	9	GND
4	10	11	12	GND

Displays

Signal	Display	Pin
Vcc	Vcc	+5V
GND	GND	GND
SDA	SDA	20
SCL	SCL	21

DIN MIDI

This board doesn't have DIN MIDI connectors so they have to be added to the board with corresponding circuitry. Schematic is available here.

MIDI In	MIDI out
Pin 19	Pin 18

Touchscreen

Touchscreen isn't supported on this board.