Wi-Fi and Bluetooth Sensor Node Design

tomitu

tomitu

Make me a temperature and humidity sensor node with Wifi and Bluetooth, powered by USB-C (5V) for consumer use.
It should be a low-power environmental node with a digital T/RH sensor, ultra-low-power MCU with Wi-Fi + Bluetooth (dual-radio) — 2.4 GHz 802.11 b/g/n plus BLE 5.x powered by USB-C (5 V) — USB-C receptacle 5 V default; include reverse/OVP/UVLO/OCP protection and plan for 0.5–3 A sources.

flux

0:12

Thought for a moment

I’ll build the schematic for a USB-C powered Wi‑Fi/BLE temperature-humidity node. I’ll first set up the project/spec, then choose exact parts for the MCU, sensor, USB-C protection/power path, add and wire them, and run review checks before stopping at the schematic→layout checkpoint.

flux

1:42

Thought for 3 sec

Created 6 tasks.

1/6 Rename project and create/update project specification for the sensor node

Thought for 14 sec

Read schematic.

Thought for 9 sec

Thought for 1 sec

2/6 Select Wi-Fi/BLE MCU module, T/RH sensor, USB-C input, protection, and 3.3 V regulator based on power budget

Thought for 9 sec

Found 3 results for ESP32-C6 module with Wi-Fi 4 2.4 GHz 802.11 b/g/n and Bluetooth LE 5.x, low power environmental sensor node MCU module with integrated antenna, castellated SMD, suitable for USB powered consumer IoT device.

Found 3 results for digital temperature humidity sensor I2C low power accurate consumer environmental sensor 3.3 V SMD BME280 SHT4x HDC302x.

Found 3 results for USB Type C receptacle USB 2.0 sink connector 5 V default current SMD for consumer device.

Found 3 results for USB-C 5V input protection eFuse OVP UVLO OCP reverse current 3A load switch consumer electronics 5V power path.

Found 3 results for 3.3 V low quiescent current regulator buck or LDO 5V input 600mA ESP32 WiFi BLE module consumer IoT.

Thought for a moment

Processing was stopped.
Here's a summary of what I was working on: Creating a specification
I'm thinking about how to create a specification for a library focused on a retry mode. It's important to ensure that the retry mechanism is agentic – that is, it should have capabilities that allow for intelligent decision-making during retries. I need to explore the requirements and functionalities that will enable this, putting together a clear outline to guide development. Let’s see how I can structure this specification effectively!
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Automotive 240W USB PD Charger

Automotive 240W USB PD Charger thumbnail
Automotive 12V input USB charger board with 2× USB-C PD source ports rated 100W each and 2× USB-A Quick Charge outputs, designed for charging only with high-current automotive input protection and power conversion.

Properties

Use independent high-power buck-boost PD channels per USB-C port, protected automotive input, and controlled high-current PCB layout with thermal copper.

Automotive consumer electronics

Charging-only USB-C PD source and USB-A Quick Charge outputs; no USB data path

12V automotive input, design for 9-16V continuous and 30A input path margin for 2x100W USB-C PD plus 2x USB-A QC

12

V

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