Minimal Pico 2 Setup

amirkat

amirkat

Add the minimum required components needed for this Pi Pico 2 to function properly. Keep the design as simple and minimal as possible.
You may include a single humidity sensor as the primary peripheral, along with any essential supporting components such as power regulation, pull-up resistors, decoupling capacitors, or required connectors.

flux

0:09

Thought for 6 sec

Thought for a moment

I’ll keep this minimal: inspect the Pico 2 shield pins, select one low-power I2C humidity sensor, add only the required pull-ups/decoupling, wire it to the Pico 2 3V3/GND/I2C pins, then run checks and fix real issues.

flux

9:15

Thought for 3 sec

Created 5 tasks.

1/5 Inspect existing Pico 2 shield schematic pins and current nets

Thought for 2 sec

Read schematic.

Thought for 7 sec

2/5 Select a minimal I2C humidity sensor and required support parts

Thought for 4 sec

Found 3 results for Find a readily available simple I2C humidity and temperature sensor IC suitable for 3.3V Raspberry Pi Pico 2 shield. Prefer Sensirion SHTC3/SHT31 or TI HDC series with minimal external components. Need part UID/library URL and key pins VDD GND SDA SCL, package, datasheet availability..

Thought for 3 sec

Read SHTC3-TR-2.5KS datasheet for recommended operating conditions supply .

Thought for 6 sec

3/5 Add sensor, pull-ups, and decoupling components

Thought for 5 sec

Thought for 9 sec

4/5 Wire power, ground, and I2C connections to the Pico 2 shield

Thought for 4 sec

Thought for 4 sec

5/5 Run ERC/design review and fix real schematic issues

Thought for 3 sec

Completed 6 design checks — found 46 issues.

Read schematic.

Thought for 27 sec

Thought for 20 sec

Thought for a moment

Thought for 3 sec

Thought for 1 sec

Completed 6 design checks — found 14 issues.

Thought for 12 sec

Thought for 9 sec

Thought for 6 sec

Completed 6 design checks — found 13 issues.

Thought for 6 sec

Completed design checks — found 13 issues.

Read schematic.

Thought for 11 sec

Found 2 results for Find common in-stock 0603 SMD 10 kΩ 1% resistor suitable as I2C pull-up. Need manufacturer part number and manufacturer for generic resistor BOM assignment..

Found 2 results for Find common in-stock 0603 SMD 100 nF 16 V X7R ceramic capacitor suitable for SHTC3 decoupling. Need manufacturer part number and manufacturer for generic capacitor BOM assignment..

Thought for 9 sec

Thought for 25 sec

Thought for 6 sec

Completed design checks — found 9 issues.

Thought for 5 sec

5/5 tasks completed.

Thought for a moment

Done — I added a minimal SHTC3 humidity/temperature sensor block: U2 SHTC3, C1 100 nF decoupling, and R1/R2 10 kΩ I2C pull-ups on Pico GPIO4/GPIO5, powered from the Pico 2 3V3 rail.
Focused schematic ERC is clean. The only remaining full-review errors are PCB airwires because the new parts have not been placed/routed yet; that’s expected until you approve moving into layout.
I also created Minimal Pico 2 Humidity Sensor Design Notes with the datasheet rationale, connections, BOM choices, and validation status.
Proceed to layout
Use different pins
Add connector
Review BOM
Make beginner-friendly

Finished working

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Minimal Pico 2 Humidity Sensor Design Notes
Scope
Add the minimum schematic components needed for a Raspberry Pi Pico 2 shield to use one humidity sensor while keeping the design simple.
Architecture
  • Host/module: Raspberry Pi Pico 2 shield header symbol U1.
  • Primary peripheral: Sensirion SHTC3-TR-2.5KS digital humidity and temperature sensor U2.
  • Interface: I2C on Pico GPIO4/GPIO5.
  • Power: sensor is powered from the Pico 2 3V3 pin; no extra regulator is required for this minimal shield because the Pico module provides the 3.3 V rail.
Datasheet-grounded SHTC3 requirements
From the SHTC3 datasheet:
  • Supply voltage range: 1.62 V to 3.6 V; 3.3 V operation is valid.
  • I2C Fast Mode Plus supported up to 1 MHz.
  • Required decoupling: 100 nF capacitor between VDD and VSS, placed close to the sensor.
  • I2C lines are open-drain and require external pull-up resistors; datasheet example uses 10 kΩ.
  • Center pad is internally connected to VSS and may be connected to GND.

Implemented connections

NetConnections
3V3U1 3V3, U2 VDD, C1 P1, R1 P2, R2 P2
GNDU1 GND pins, U1 AGND, U2 VSS, U2 EPAD, C1 P2
I2C0_SDAU1 GPIO4, U2 SDA, R1 P1
I2C0_SCLU1 GPIO5, U2 SCL, R2 P1
VBUSU1 VBUS power-domain label for the Pico module USB VBUS rail

Added BOM items

DesignatorPartValue / MPNPurpose
U2Sensirion SHTC3-TR-2.5KSSHTC3-TR-2.5KSI2C humidity/temperature sensor
C1Generic capacitor100 nF, 16 V, 0603, Yageo CC0603KRX7R7BB104Sensor supply decoupling
R1Generic resistor10 kΩ, 1%, 0603, VO C2889366I2C SDA pull-up
R2Generic resistor10 kΩ, 1%, 0603, VO C2889366I2C SCL pull-up
Validation status
  • Focused ERC for floating pins, missing power, no-connect, single-pin nets, undriven nets, and pin-to-pin issues passed with no open errors or warnings after wiring and no-connect marking.
  • Full project review still reports PCB airwires because the new components have not been placed/routed on the PCB. This is expected before layout work and should be resolved during the layout phase after user confirmation.

    Scope

    Architecture

    Datasheet-grounded SHTC3 requirements

    Implemented connections

    Added BOM items

    Validation status

Documents

    Minimal Pico 2 Humidity Sensor Design Notes

Assets

pico-template.png

pico-template.png

pico-templateThumbnail

Raspberry Pi Pico 2 Shield Template sewE

Raspberry Pi Pico 2 Shield Template sewE thumbnail
This is the project template for the Raspberry Pi Pico 2, the latest addition and update to Pi Pico line up.
Raspberry pi pico 2 is equipped with the RP2350, a cutting-edge, high-performance microcontroller designed with enhanced security and versatility in mind. Every element of its design has been upgraded, from the advanced CPU cores to the innovative PIO (Programmable I/O) interfacing subsystem.
The Raspberry Pi Foundation has integrated a robust security architecture centered around Arm TrustZone for Cortex-M, ensuring data protection and integrity. Additionally, new low-power states and expanded package options broaden the range of applications, making the Pico 2 an ideal choice for diverse, power-sensitive projects.
To learn more about what's the key differences between the original Pi Pico and the new Pi Pico 2, read our blog https://www.flux.ai/p/blog/whats-new-in-the-raspberry-pi-pico-2-a-showdown-with-the-original-raspberry-pi-pico
#project-template #template #raspberry #pi #pico2 #newpico

Properties

Properties describe core aspects of the project.

Pricing & Availability

Distributor

Qty 1

Arrow

$1.71–$1.76

Digi-Key

$1.17

HQonline

$0.00

LCSC

$0.01

Mouser

$0.10

TME

$6.17

Verical

$1.64–$1.94

Controls