pico-firmware

Pico Firmware for Environmental Monitoring

This firmware runs on a Raspberry Pi Pico (or compatible board) and collects sensor data from environmental sensors. It transmits this data securely to a remote server (env-monitor-server) over HTTPS.

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🧩 System Overview

• DHT22 Sensor — Temperature & Humidity
• ENS160 Sensor — eCO2 & TVOC
• WiFi STA_IF — Connects to WLAN using WifiManager
• Data Formatter — Converts to JSON/CSV
• HTTP Client — Sends data via urequests POST to:

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📦 Project Structure

File	Description
pico.py	Main loop handling sensor read & transmit
network_client.py	WiFi setup and connection logic
dht22.py	Driver for DHT22 sensor
ens160.py	Driver for ENS160 sensor
_init__.py	Module init
README.md	This file

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🚀 Getting Started

1. Flash MicroPython to your Pico.
2. Clone this repo and upload files using Thonny or rshell.
3. Ensure the following hardware is connected:

• DHT22 (GPIO pin as configured)
• ENS160 (I²C)

4. Configure your WiFi credentials in network_client.py.

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📡 API Endpoint

POST /api/sensor
Payload Example (JSON):

{
"temperature": 24.5,
"humidity": 48.2,
"eco2": 680,
"tvoc": 123
}