Pinout Diagram
Pico
This diagram shows the Pico as if you are looking at it from “above”, so that you can see the WiFi antenna and micro USB port.
┏━━━━┓USB CONNECTION
┌─────┃ ┃─────┐
GP0 | 01│ ┗━━━━┛ │40 | VBUS
GP1 | 02│ │39 | VSYS
GND | 03│ │38 | GND
GP2 | 04│ ╭─╮ │37 | 3V3_EN
GP3 | 05│ │ │ │36 | 3V3OUT - SPLIT TO SCREEN VCC and SENSOR VCC
GP4 | 06│ ╰─╯ │35 | ADC_VREF
GP5 | 07│ │34 | GP28 - SENSOR DAT
FACTORY RESET - GND | 08│ │33 | GND - SENSOR GND
FACTORY RESET + GP6 | 09│ ┌─────┐ │32 | GP27
GP7 | 10│ │ │ │31 | GP26
GP8 | 11│ │ │ │30 | RUN
GP9 | 12│ └─────┘ │29 | GP22
RGB INVERT - GND | 13│ │28 | GND
RGB INVERT + GP10 | 14│ │27 | GP21 - SCREEN LED+
GP11 | 15│ │26 | GP20 - SCREEN RESET
GP12 | 16│ │25 | GP19 - SCREEN SDA
GP13 | 17│ │24 | GP18 - SCREEN SCL
DEBUG JUMPER - GND | 18│ │23 | GND - SCREEN GND
DEBUG JUMPER + GP14 | 19│ │22 | GP17 - SCREEN CS
GP15 | 20│ │21 | GP16 - SCREEN A0/DC
└────────────────┘
TFT Display
Looking at the TFT screen from below, where you can see the SD card slot.
┌──────────────────────────────────────────────────────────┐
│ ┌─────────────────────────────┐ │ LED-
│ │ │ │ LED+ - PICO GP21
│ │ │ │ SD_CS
│ │ │ │ MOSI
│ ╲ │ │ MISO
│ │ │ │ SCK
│ │ │ │ CS - PICO GP17
│ └───────────────────────────┘ │ SCL - PICO GP18
│ │ SDA - PICO GP19
│ │ A0 - PICO GP16
│ │ RESET - PICO GP20
│ │ NC
│ │ NC
│ │ NC
│ │ VCC - SPLITTER FROM PICO 3V3
│ │ GND - PICO GND
└──────────────────────────────────────────────────────────┘
Temperature Sensor Breakout Board
Looking at the breakout board with the screw terminals on the left.
┌─────────────────────────────┐
│ │
│ ┌───────┐ │
SENSOR YELLOW(s) ─── │ DAT │ │ ┌─┐ │
│ │───────│ DAT │ │────┼──── PICO GP20
SENSOR RED(s) ─── │ VCC │ │ VCC │ │────┼──── 3V3OUT SPLITTER
│ │───────│ GND │ │────┼──── PICO GP19
SENSOR BLACK(s) ─── │ GND │ │ └─┘ │
│ └───────┘ │
│ │
└─────────────────────────────┘