1.5.1

OpenShock Firmware 1.5.1

Hotfix release addressing a safety-critical E-Stop bypass.

Bug Fixes

• E-Stop - Fixed shocker commands being transmitted while E-Stop was active. Commands are now rejected at the entry point (CommandHandler::HandleCommand) and discarded in the RF transmit task's receive loop when E-Stop is engaged.

Full Changelog: 1.5.0 -> 1.5.1

Flashing the firmware

Download OpenShock_[board]_[version].bin and flash it to your microcontroller:

esptool write_flash 0x0 OpenShock_[board]_[version].bin

1.5.0

OpenShock Firmware 1.5.0

This release is a major firmware update bringing a fully reworked RF transmitter pipeline for more reliable shocker communication, a new T330 shocker protocol, an RFC 8908-compliant captive portal, a rebuilt frontend (Svelte 5 + shadcn), and significant improvements to E-Stop handling and rate limiting.

Warning: Petrainer users will need to re-pair their shockers once they update their hub due to protocol changes.

Highlights

• Added T330 shocker protocol support
• Completely reworked RF behaviour for more reliable shocker control
• WAY more and responsive stable captive portal (It's a night and day difference)
• Rebuilt Captive Portal UI to match frontend style.
• E-Stop button is now significantly more reliable with a re-arm grace period
• Wi-Fi RSSI telemetry reported by the hub for connection health display in frontend

Major Improvements

• RMT / Radio Transmitter

  • Added T330 shocker protocol support
  • Fixed timing issues for CaiXianlin and improved PET998DR handling
  • Lots of minor optimizations, refactors and guardrails to improve radio reliability

• E-Stop

  • More reliable E-Stop state transitions with change detection, eliminating event spamming
  • Re-arm grace period after clearing prevents re-triggering from switch bounce or noise

• HTTP

  • Rate limiter now tracks requests more efficiently with corrected cleanup timing and more predictable blocking

• Captive Portal

  • Captive portal is now refactored to operate more like RFC 8908 spec with improved responsiveness
  • Migrated from Svelte 4 + Skeleton UI to Svelte 5 + shadcn-svelte with Tailwind CSS v4
  • UI palette synced with OpenShock website; reduced bundle size
  • Added unit testing and Svelte check steps; migrated from npm to pnpm
  • Removed mDNS server from captive portal
  • Removed the "AbsolutelySureButton" UI element, meant as a joke but it got old and obnoxious

• AssignLCG & Gateway

  • AssignLCG uses the new backend endpoint and reports firmware version; legacy LCG override removed
  • Improved HTTP error/status consistency and 401 token recovery

Minor Updates / Optimizations

• Wi-Fi RSSI telemetry now reported by the hub so the OpenShock.app frontend can display connection health
• Replaced all ESP.restart() calls with ESP-IDF native esp_restart()
• Improved OTA update flow and crash-loop resilience
• Safer integer formatting, reduced unnecessary string copying, and cleaner command/serial logic
• CA certificate bundle updated to December 2025 Mozilla extract, this bundle is not used yet but will be once we drop Arduino for ESP-IDF
• CDN migrated from Cloudflare R2 (rclone) to Bunny CDN (SFTP) with cache purge support
• CI/CD updated: Actions bumped (checkout v6, codeql v4, download-artifact v7), timeout limits on all jobs, pnpm adopted, Node.js updated
• Expanded and cleaned up compiler warnings; PlatformIO, espressif32, FlatBuffers, and other dependency updates

Bug Fixes

• Addressed variable initialization and type casting correctness issues
• Fixed timing issues in CaiXianlin and PET998DR shocker protocols

Full Changelog: 1.4.0 -> 1.5.0

Flashing the firmware

Download OpenShock_[board]_[version].bin and flash it to your microcontroller:

esptool write_flash 0x0 OpenShock_[board]_[version].bin

1.5.0-rc.7

OpenShock Firmware 1.5.0-rc.7

Fix stable Semver parsing error, make beta builds more verbose, increase OTA task stack size, implement more guards in OTA code.

Full Changelog: 1.5.0-rc.6 -> 1.5.0-rc.7

Flashing the firmware

Download OpenShock_[board]_[version].bin and flash it to your microcontroller:

esptool write_flash 0x0 OpenShock_[board]_[version].bin

1.5.0-rc.6

OpenShock Firmware 1.5.0-rc.6

Improved Captive-Portal responsiveness, removed mDNS server from Captive-Portal, some code cleanup.

Flashing the firmware

Download OpenShock_[board]_[version].bin and flash it to your microcontroller:

esptool write_flash 0x0 OpenShock_[board]_[version].bin

1.5.0-rc.5

OpenShock Firmware 1.5.0-rc.5

Fixed a bug where password was not being supplied to websocket serialization function, causing WiFi network to try to authenticate with no password.

Flashing the firmware

Download OpenShock_[board]_[version].bin and flash it to your microcontroller:

esptool write_flash 0x0 OpenShock_[board]_[version].bin

1.5.0-rc.4

OpenShock Firmware 1.5.0-rc.4

Fixed a bug where using Captive Portal to connect to a WiFi network would pair the password entered with another the network than selected, removed obnoxious "AbsolutelySureButton"

Flashing the firmware

Download OpenShock_[board]_[version].bin and flash it to your microcontroller:

esptool write_flash 0x0 OpenShock_[board]_[version].bin

1.5.0-rc.3

OpenShock Firmware 1.5.0-rc.3

Fixed a critical bug where the firmware could never connect to LCG, and addressed code correctness issues (variable initialization and type casting) along with compiler warning cleanups.

Flashing the firmware

Download OpenShock_[board]_[version].bin and flash it to your microcontroller:

esptool write_flash 0x0 OpenShock_[board]_[version].bin

1.5.0-rc.2

OpenShock Firmware 1.5.0-rc.2

This release candidate focuses on E-Stop reliability, rate limiting behavior, and general internal cleanup and correctness improvements.

Highlights

• Improved E-Stop handling

  • More reliable state transitions.
  • Removed event spamming by introducing change detection.
  • Added a short re-arm grace period after clearing to prevent immediate re-triggering due to switch bounce or noise.
  • Cleaner handling of external E-Stop triggers.

• Rate limiter improvements

  • More efficient internal tracking of recent requests.
  • Corrected cleanup and timing behavior under sustained load.
  • More predictable blocking behavior when limits are exceeded.

Stability & Internal Cleanup

• Safer handling of integer formatting and digit counting (avoids edge-case overflows).
• Reduced unnecessary string copying by tightening ownership where appropriate.
• Command handling and serial logic cleaned up for clearer control flow.
• General warning cleanups, minor API refinements, and consistency improvements across the codebase.

Build & Tooling

• Minor CI and dependency updates.
• Expanded compiler warnings where possible to catch issues earlier during development.

Flashing the firmware

Download OpenShock_[board]_[version].bin and flash it to your microcontroller:

esptool write_flash 0x0 OpenShock_[board]_[version].bin

1.5.0-rc.1

OpenShock Firmware 1.5.0-rc.1

This release candidate focuses on radio reliability, firmware behavior improvements, and a refreshed frontend.

Highlights (User-Visible Firmware Changes)

• Major RF/RMT transmitter rework for improved timing accuracy and more reliable shocker communication.
• Updated AssignLCG integration using the new backend endpoint (removes the old LCG override setting).
• Hub now reports its Wi-Fi signal strength (RSSI), this will be used to show connection health in UI's.
• Serial output now uses CRLF line endings for improved compatibility with Windows terminals.
• Added T330 shocker protocol support.

Radio & Timing

• Reworked RF pipeline with more consistent timing and fewer internal allocations.
• Fixed timing issues for CaiXianlin and improved PET998DR handling.
• Additional guardrails added to the RF subsystem to prevent stalls/crash loops.

Firmware Behavior / System

• Introduced internal execution time limits to prevent firmware from getting stuck in long-running operations.
• Replaced all ESP.restart() usage with ESP-IDF native esp_restart() calls
• Improved OTA, Wi-Fi initialization, and crash-loop resilience.

HTTP & Gateway

• Clearer/more consistent HTTP error and status behavior.
• Improved 401 handling and token recovery.
• AssignLCG now reports firmware version and uses the updated endpoint.

Frontend & UX

• Migrated to Svelte 5 + shadcn.
• Updated to Tailwind CSS v4 and reduced frontend bundle size.
• UI palette synced with website.

Misc / Internal Changes

• PlatformIO, espressif32, FlatBuffers, Node, pnpm, and other dependency updates.
• Build reproducibility improvements and CI cleanup.
• Various memory fixes, warning cleanups, and improved parsing logic.

---

Breaking Changes

• LCG override removed (new AssignLCG endpoint required).
• Serial output now uses CRLF (update scripts if needed).

Notes

• RF timing changes are substantial; please report shocker-specific regressions.
• Scripts relying on legacy AssignLCG behavior may need updates.

Flashing the firmware

Download OpenShock_[board]_[version].bin and flash it to your microcontroller:

esptool write_flash 0x0 OpenShock_[board]_[version].bin

1.4.0

OpenShock Firmware 1.4.0

This release is packed with bugfixes, optimizations, code cleanup, prepwork for ESP-IDF, and some features!

Highlights

• Add support for configuring hostname of ESP via Serial.
• Add support for configuring Emergency Stop via Captive Portal and Serial.
• Report available GPIO pins to Captive Portal Frontend.
• Massively refactor serial command handler.

Optimizations

• Bump platform-espressif32 to version 6.9.
• Start using C++17 features including std::string_view.
• Clean up platformio.ini file.
• Lots of miscellanious code cleanup.
• Implement custom zero-copy type conversion methods with better error checking.
• Reduce log spam by the arduino library.
• Improve error handling of gpio pin selection.
• Attempt to make more sense out of the 998DR protocol serializer.

Flashing the firmware

Download OpenShock_[board]_[version].bin and flash it to your microcontroller:

esptool write_flash 0x0 OpenShock_[board]_[version].bin