v0.5.0 San Valentino Release

Quiet Hours + Circuit Breaker + Adaptive TX Power

Three new features leveraging the existing SNR/RSSI infrastructure to improve reliability, power savings, and mesh network resilience.

• Quiet Hours — Configurable night-time rate limiting (e.g. 22:00-06:00) reduces forwarding from 100 to 30 packets/min. Saves battery during low-traffic periods. Requires TimeSync.

• Circuit Breaker — Automatically blocks DIRECT forwarding to neighbours with degraded links (SNR < -10dB). Transitions to half-open after 5 minutes for a test packet. Good SNR closes the breaker. FLOOD traffic is never blocked.

• Adaptive TX Power — Dynamically adjusts transmit power (5-14 dBm EU) based on average neighbour SNR. Reduces power when signal is strong, increases when weak.

v0.4.0 - Battery Fix, Remote CLI & Flash Optimization

What's New in v0.4.0

Bug Fixes

• Battery ADC fixed - Resolved 0V battery reading caused by
  CubeCell framework 1.6.0 bug (ch3 SAR calibration not initialized).
  New workaround uses analogRead() + ch0 calibration + VBAT_ADC_CTL
  circuit control
• Airtime tracking - RX/TX airtime now properly calculated
  per-packet using LoRa formula
• Noise floor estimation - EMA-smoothed noise floor from
  RSSI-SNR, no longer stuck at 0dB
• Remote CLI commands - Fixed "Err:Unknown" for commands only
  available on local serial

New Features

• radiostats command - Noise floor, last RSSI/SNR, airtime
  TX/RX (serial + remote)
• packetstats command - Packet breakdown: flood/direct RX/TX
  (serial + remote)
• lifetime command - Now available via remote CLI (was
  serial-only)
• tempradio command - Temporary radio parameter changes without
  saving to EEPROM

Optimizations

• Flash savings: 2,904 bytes - String abbreviation in LOG/LOG_RAW
  macros (98.3% → 96.0%)
• Startup banner simplified (removed unicode box-drawing characters)

Documentation

• Complete command reference tables in README
• Corrected radio parameters (frequency, TX power, sync word)

Build Info

• Flash: 96.5% (126,492 / 131,072 bytes)
• RAM: 51.3% (8,408 / 16,384 bytes)
• Board: Heltec CubeCell HTCC-AB01
• Region: EU868

CubeCellMeshCore v0.3.3

Features

• MeshCore Protocol Compatible - Works with MeshCore Android/iOS apps
• Ed25519 Authentication - Secure login with encrypted sessions
• Rate Limiting - Protection against brute-force and flood attacks
• Persistent Statistics - Lifetime stats survive reboots (EEPROM)
• Neighbour Tracking - Direct repeater discovery via 0-hop ADVERTs
• Remote CLI - Encrypted command access via mesh network
• Deep Sleep - Low power mode support

What's New in v0.3.3

• Added persistent statistics stored in EEPROM
• Tracks lifetime: RX/TX/FWD packets, unique nodes, logins, uptime
• Auto-save every 5 minutes with CRC16 integrity
• New commands: lifetime, savestats
• Boot counter for reliability monitoring

Installation

Download CubeCellMeshCore-v0.3.3.zip and flash using CubeCellTool or PlatformIO.

See INSTALL.md for detailed instructions.

Hardware

• Heltec CubeCell HTCC-AB01
• Flash: 95.8% used
• RAM: 51.1% used