IoT-Postbox v1.1

🚀 Overview

This release brings major improvements to both hardware and firmware for the IoT-PostBox v1 platform. It introduces support for 16MB flash, a significant refactor of the power management and sensing logic, expanded telemetry, and updated documentation and configuration for the new hardware revision.

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🛠️ Hardware

• ESP32 16MB Flash Support

  • Added a new partition table for ESP32 boards with 16MB flash:
    board_partitions/esp32/iotpostboxv1_16MB.csv

• Schematics & PCB Updates

  • All main schematics updated to revision v1.1, with improved organization, references, and annotations after testing findings.
  • Added explanatory notes for ADC measurement (VBAT/VBUS) on ESP32-S2.
  • Improved component placement, labels, and wiring for clarity.
  • Updated bottom PCB image and added a temporary pinout diagram:
    pcb_desings/iot-postbox_v1/docs/iot-postbox_v1.0_bot.png
pcb_desings/iot-postbox_v1/docs/iot-postbox_v1.0_pinout_temp.png

• BOM & Documentation

  • Updated interactive BOM:
    pcb_desings/iot-postbox_v1/bom/ibom.html
  • Removed temporary and autosave files.

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💾 Firmware

• Power Management Refactor

  • Introduced new PowerManagement and ADCSense classes for centralized power and ADC handling.
  • Improved ADC calibration, averaging, and reporting for battery and VBUS.
  • Enhanced detection of power and charging states.

• Expanded MQTT Payload

  • Now includes vBat, vBus, PowerStatus, ChargingStatus, and event counter.

• Code Modularization

  • Added new PostBox and PostBoxSwitch classes to modularize mailbox logic and switch handling.
  • Refactored main firmware to use these new classes for better maintainability.

• Configuration Updates

  • Updated SSID, hostname, device name, and repository URL in config files.
  • Adjusted sleep and NTP settings for improved operation.

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See the full commit history for all details.