Pin Values

Pin Values

This table gives an overview about the function for each pin of the EuroPi.

The Pin No refers to the number from 1 to 40 assigned to each pin on the Pico board on the pinout given.
GP No refers to the General Purpose Input Output number of each pin (if relevant).
Name refers to the name given on the pinout, it can also be a GPIO pin, so they are independent from each other.
PCB code is the code given to each pin as it is routed on the PCB, for example DJ2 is Digital Jack 2, and goes from Pin 27, which is GPIO 21.
The Function column is simply a brief description of the pin's use in the module.

Pin No	GP No	Name	PCB Code	Function
1	0			(Diagnostics Header)
2	1			(Diagnostics Header)
3		GND	GND	Ground
4	2			(Diagnostics Header)
5	3			(Diagnostics Header)
6	4		04: SDA/TX	Expander 1 Pin 1
7	5		05: SCL/RX	Expander 1 Pin 2
8		GND	GND	Ground
9	6
10	10		AJ3	Analogue Jack 4 (Bottom Right)
11	8		08: SDA/TX	Expander 2 Pin 1
12	9		09: SCL/RX	Expander 2 Pin 2
13		GND	GND	Ground
14	7		AJ4	Analogue Jack 3 (Bottom Left)
15	14		AJ2	Analogue Jack 2 (Top Right)
16	12		12: SDA/TX	Expander 3 Pin 1
17	13		13: SCL/RX	Expander 3 Pin 2
18		GND	GND	Ground
19	11		AJ1	Analogue Jack 1 (Top Left)
20	15		B2	Button 1 (Upper)
21	16		16: SDA/TX	Expander 4 Pin 1
22	17		17: SCL/RX	Expander 4 Pin 2
23		GND	GND	Ground
24	18		B1	Button 2 (Lower)
25	19		DJ4	Digital Jack 3 (Bottom Left)
26	20		DJ3	Digital Jack 4 (Bottom Right)
27	21		DJ2	Digital Jack 1 (Top Left)
28		GND	GND	Ground
29	22		DJ1	Digital Jack 2 (Top Right)
30		RUN		(Diagnostics Header)
31	26	ADC0		(Diagnostics Header)
32	27	ADC1	K2	Knob 2 (Right) (ADC Channel 2)
33		GND	GND	Ground
34	28	ADC2	K1	Knob 1 (Left) (ADC Channel 3)
35		ADC_VREF
36		3V3(OUT)	3V3	3.3V output, used for ADC
37		3V3_EN
38		GND	GND	Ground
39		VSYS	VCC	5V into Pico
40		VBUS