Minimal Pico 2 Humidity Sensor Design

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

0:12

Thought for 5 sec

Thought for 6 sec

Thought for a moment

I’ll keep this minimal: inspect the Pico 2 shield pins, choose a simple 3.3 V I2C humidity sensor, add only required pull-ups/decoupling, wire it to the Pico 2’s existing 3V3/GND/GPIO pins, then run checks and fix any real issues.

flux

2:45

Thought for 3 sec

Created 5 tasks.

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

Thought for 4 sec

Read schematic.

Thought for 2 sec

2/5 Select a minimal humidity sensor and required support passives from library/datasheet

Thought for 3 sec

Found 3 results for Find a simple digital humidity and temperature sensor IC for a 3.3 V Raspberry Pi Pico 2 shield. It should use I2C, require minimal external components (VDD, GND, SDA, SCL plus a local decoupling capacitor and bus pull-ups), and be available as an SMD part with a Flux library entry.%2C%20and%20be%20available%20as%20an%20SMD%20part%20with%20a%20Flux%20library%20entry.&type=components).

Thought for 8 sec

Read SHTC3-TR-2.5KS datasheet for pin assignment pin description.

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

Read SHTC3-TR-2.5KS datasheet for typical application circuit power supply.

Found 3 results for Generic Resistor.

Found 3 results for Generic Capacitor.

Thought for 9 sec

Thought for 3 sec

3/5 Add sensor, I2C pull-ups, and decoupling capacitor

Thought for 9 sec

Thought for 7 sec

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

Thought for 3 sec

Thought for 5 sec

Completed design checks — found 53 issues.

Read schematic.

Thought for 22 sec

Thought for a moment

The sensor block is wired. Review found the remaining issues are unused Pico 2 shield header pins, so I’m marking unused pins intentional and tying all ground header pins together to keep the minimal schematic clean.

flux

2:04

Thought for 4 sec

Thought for 8 sec

Thought for 13 sec

Completed design checks — found 13 issues.

Thought for 10 sec

Thought for 3 sec

Completed design checks — found 12 issues.

Thought for 5 sec

5/5 tasks completed.

Thought for a moment

Done — I added the minimal SHTC3 humidity/temperature sensor circuit with only the required 100 nF decoupling capacitor and 10 kΩ I2C pull-ups, wired to Pico 2 GPIO4/GPIO5, 3V3, and GND.
ERC is clean with zero unresolved electrical violations. I also created Minimal Pico 2 Humidity Shield Design Notes with the pin map, datasheet rationale, and power budget.
Next step is PCB placement/layout when you’re ready.
Yes, place layout
Use larger passives
Add debug header
Check BOM cost
Add firmware notes

Finished working

Sign up to send
U1
U1 GPIO4 - U2 SDA
U1 GPIO5 - U2 SCL
GND
  • Generic Inductor
    Generic Inductor
    A generic fixed inductor suitable for rapid circuit topology development. The footprint automatically adapts based on the selected package, supporting standard SMD sizes (e.g., 0402, 0603, 0805) as well as well-known inductor packages such as SDR1806, PA4320, SRN6028, and SRR1260. Standard inductor values: 1.0 nH, 10 nH, 100 nH, 1.0 µH, 10 µH, 100 µH, 1.0 mH 1.2 nH, 12 nH, 120 nH, 1.2 µH, 12 µH, 120 µH, 1.2 mH 1.5 nH, 15 nH, 150 nH, 1.5 µH, 15 µH, 150 µH, 1.5 mH 1.8 nH, 18 nH, 180 nH, 1.8 µH, 18 µH, 180 µH, 1.8 mH 2.2 nH, 22 nH, 220 nH, 2.2 µH, 22 µH, 220 µH, 2.2 mH 2.7 nH, 27 nH, 270 nH, 2.7 µH, 27 µH, 270 µH, 2.7 mH 3.3 nH, 33 nH, 330 nH, 3.3 µH, 33 µH, 330 µH, 3.3 mH 3.9 nH, 39 nH, 390 nH, 3.9 µH, 39 µH, 390 µH, 3.9 mH 4.7 nH, 47 nH, 470 nH, 4.7 µH, 47 µH, 470 µH, 4.7 mH 5.6 nH, 56 nH, 560 nH, 5.6 µH, 56 µH, 560 µH, 5.6 mH 6.8 nH, 68 nH, 680 nH, 6.8 µH, 68 µH, 680 µH, 6.8 mH 8.2 nH, 82 nH, 820 nH, 8.2 µH, 82 µH, 820 µH, 8.2 mH #generics #CommonPartsLibrary
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  • Generic Capacitor
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    A generic fixed capacitor ideal for rapid circuit topology development. You can choose between polarized and non-polarized types, its symbol and the footprint will automatically adapt based on your selection. Supported options include standard SMD sizes for ceramic capacitors (e.g., 0402, 0603, 0805), SMD sizes for aluminum electrolytic capacitors, and through-hole footprints for polarized capacitors. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard capacitor values: 1.0pF, 10pF, 100pF, 1000pF, 0.01uF, 0.1uF, 1.0uF, 10uF, 100uF, 1000uF, 10000uF 1.1pF, 11pF, 110pF, 1100pF 1.2pF, 12pF, 120pF, 1200pF 1.3pF, 13pF, 130pF, 1300pF 1.5pF, 15pF, 150pF, 1500pF, 0.015uF, 0.15uF, 1.5uF, 15uF, 150uF, 1500uF 1.6pF, 16pF, 160pF, 1600pF 1.8pF, 18pF, 180pF, 1800pF 2.0pF, 20pF, 200pF, 2000pF 2.2pF, 22pF, 220pF, 2200pF, 0.022uF, 0.22uF, 2.2uF, 22uF, 220uF, 2200uF 2.4pF, 24pF, 240pF, 2400pF 2.7pF, 27pF, 270pF, 2700pF 3.0pF, 30pF, 300pF, 3000pF 3.3pF, 33pF, 330pF, 3300pF, 0.033uF, 0.33uF, 3.3uF, 33uF, 330uF, 3300uF 3.6pF, 36pF, 360pF, 3600pF 3.9pF, 39pF, 390pF, 3900pF 4.3pF, 43pF, 430pF, 4300pF 4.7pF, 47pF, 470pF, 4700pF, 0.047uF, 0.47uF, 4.7uF, 47uF, 470uF, 4700uF 5.1pF, 51pF, 510pF, 5100pF 5.6pF, 56pF, 560pF, 5600pF 6.2pF, 62pF, 620pF, 6200pF 6.8pF, 68pF, 680pF, 6800pF, 0.068uF, 0.68uF, 6.8uF, 68uF, 680uF, 6800uF 7.5pF, 75pF, 750pF, 7500pF 8.2pF, 82pF, 820pF, 8200pF 9.1pF, 91pF, 910pF, 9100pF #generics #CommonPartsLibrary
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  • Generic Resistor
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Raspberry Pi Pico 2 Shield Template hSYu

Raspberry Pi Pico 2 Shield Template hSYu 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.

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