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Blockly Changelog

CoDrone EDU Blockly Changelog​

Version 4.2.2​

November 3, 2025​

Improvements ⬆️

  • Added a warning notifying user that drone is connected in another tab or window when attempting connect. To resolve this warning, disconnect the drone from the other tab or window or simply close the other tab or window.
  • Includes minor bug fixes and feature improvements.

Version 4.2.1​

October 22, 2025​

Improvements ⬆️

  • Disabled false disconnection detection logic

Bug Fixes 🐛

  • Fixed buggy automatic drone reconnection behavior
  • Fixed connection box covering the last item in category for CDEJ users

Version 4.2.0​

October 20, 2025​

Improvements ⬆️

  • Blockly category colors modified for accessibility.
  • Improved "Menu" options for tab management:
    • "Open...": Creates a new tab with filename and xml file
    • "New": Creates a new tab with entered file name
    • "Clear Workspace": Removes all blocks in current tab
    • "Open in Blockly": Opens a new tab with example file name and xml file
  • Blockly prompts user on closing unsaved work
  • Fixed false disconnections and provides warning for lost connection.
  • Blockly now notifies user and disables Blockly if device is too small or not compatible to use Blockly.

Bug Fixes 🐛

  • Fixed code being overwritten by last opened tab

Version 4.1.0​

September 9, 2025​

Improvements ⬆️

  • Provided clearer messaging for color category when there's no loaded color data set.
  • "Run", "Land", and "Stop" buttons now visually indicate if they being clicked on and hovered over.
  • Korean and Japanese translations included for new blocks.

Version 4.0.2​

August 28, 2025​

Bug Fixes 🐛

  • Resolved drone disconnection issue

Version 4.0.1​

August 18, 2025​

Bug Fixes 🐛

  • Resolved disconnection issue when leaving tab

Version 4.0.0​

August 13, 2025​

New Features ✨

  • Blockly has a new look!

    • Color training tool (formerly known as color calibration) is no longer inside the "Colors" category. It is now a button on the right side of the Blockly window.
    • Console will appear on the right side of the Blockly window. To open the console, there will be a Console button on the right side of the Blockly window.
    • Sensor Dashboard will appear on the bottom-left side of the Blockly window with a button that says "View Sensor Data".
    • You can create multiple tabs to run different code more conveniently.

  • New Flight Commands blocks:

    • A block that allows the drone to move a given distance.
    • A block that allows the drone to move to a given position/coordinate relative to its 1st takeoff of the run.

  • New Flight Sequences blocks:

    • A block that moves the drone in a circle.
    • A block that moves the drone in a triangle.
    • A block that moves the drone in a square.
    • A block that sways the drone side to side.

  • New Controller blocks:

    • The former Screen category blocks are now in the Controller category.
    • A block that retrieves a True/False value if a controller button was or was not pressed.
    • A block that retrieves the x- or y-value of the left or right controller joystick.

Bug Fixes 🐛

  • Fixed error-handling for "go for duration" block.

Version 3.2.1​

May 30, 2025​

Bug Fixes 🐛

  • Fixed "go" block error-handling causing improper error message.

Version 3.2.0​

April 28, 2025​

New Features ✨

  • Updated Python generated code for the "go" block to match the new go() function released in the Python library

Improvements ⬆️

  • The connection box no longer automatically opens when code is run so that the programming categories are easily visible.
  • Updated functions to match Python library v2.3 (latest)

Bug Fixes 🐛

  • Fixed list indexing and Python code generation that was preventing code from running as expected.
  • The "Current time" Timing block now correctly returns the time based on the selected parameter.
  • Fixed a bug where setting roll and pitch would incorrectly update the trim values in the connection box.

Version 3.1.2​

March 25, 2025​

Improvements ⬆️

  • Eliminated the need for the page to reload when removing a “when start” block

Bug fixes 🐛

  • Fixed an infinite loading issue caused by accessing Blockly from alternative links

Version 3.1.1​

March 10, 2025​

Improvements ⬆️

  • Updated functions to match Python library v2.2 (latest)

Bug fixes 🐛

  • Fixed bug with color classifier

Version 3.1.0​

February 19, 2025​

Bug Fixes 🐛

  • Fixed the bug when using "when key pressed" by changing its functionality to match Python for Robolink behavior. Any old code that was implemented with no longer supported keys (arrows, spacebar, and backspace) have been replaced with a '0' key press. Please see this Robolink Learn lesson to learn the new behavior of the block.
  • Resolved incorrect Python-generated code for controller_draw_rectangle() and controller_draw_square() blocks that caused an error.
  • Fixed the issue with the flip functions that was caused by a battery requesting issue.
  • Addressed an issue when loading color data after running once that would cause the rest of the program to fail on subsequent runs. Don't forget to load your color data folder whenever you are running color data code!

Improvements ⬆️

  • The console now only opens automatically if the user uses a "print" or "input" block in the program.

Version 3.0.3​

January 30, 2025​

Bug fixes 🐛

  • Resolved issue where the coding workspace would clear when reloading the page.

Version 3.0.2​

January 24, 2025​

Bug fixes 🐛

  • Resolved infinite loading of Blockly affecting some users

Version 3.0.1​

January 23, 2025​

Bug fixes 🐛

  • Improved performance to reduce loading time when opening Blockly
  • Fixed an issue where the battery was returning 0%

Improvements ⬆️

  • The sensor dashboard now always displays the predicted color based on the default calibration even when using a custom dataset
  • The “clear console” button dynamically adjusts its position when the side tabs open so it remains visible
  • Enhanced performance for better user experience and improved program responsiveness

Version 2.2.5​

December 18, 2024​

New Features ✨

  • Updated Python generated code for controller screen functions to reflect latest Python library changes (v2.0)
  • Implemented custom 404 page

Improvements ⬆️

  • Improved firmware detection and messaging in the connection window when offline

Bug Fixes 🐛

  • Fixed error in elevation conversion from meters (m) to kilometers (km)
  • Corrected Python-generated code for Junior Turn block

Version 2.2.4​

November 7, 2024​

New Features ✨

  • Updated block names and generated code to match the latest Python library (v2.0)

Improvements ⬆️

  • Improved UI and messaging when drone battery is removed while Blockly is connected

Bug Fixes 🐛

  • Fixed bug when opening get_color() Senior block example

Version 2.2.3​

October 10, 2024​

New Features ✨

  • Added the ability to open Blockly code as a Python program in Python for Robolink
  • Updated tab colors to be consistent with category selection
  • Updated Python auto-generated code to match current library version

Improvements ⬆️

  • Adjusted menu sizing for smaller screens

Bug Fixes 🐛

  • Resolved uncaught errors
  • Corrected issue where the “disable block” function was not working properly.

Version 2.2.2​

September 18, 2024​

New Features ✨

  • Added a release version number to the menu to easily check for updates and improvements.
  • Included a link to our Privacy Policy in the menu for quick access.

Bug Fixes 🐛

  • Resolved an issue where clicking the emergency stop too quickly after running code could cause an error on the site.

Version 2.2.1​

September 4, 2024​

New Features ✨

  • Updated default "count with" parameters in loops to start at 0 instead of 1
  • Enabled "Open in Blockly" from documentation, automatically populating the workspace with an example from our our documentation site.

Improvements ⬆️

  • Improved user interface by changing when the start flag removal warning appears to a more noticeable modal window.
  • Re-ordered RUN, LAND, STOP buttons on the Blockly interface to encourage using "Land" over "Stop" whenever possible.

Bug Fixes 🐛

  • Fixed a bug where the console did not consistently print the correct number of outputs, ensuring reliable feedback during coding sessions.

Version 2.2.0​

August 21, 2024​

New Features ✨

  • Added the text "Get" in front of the variable block to distinguish it from the "Set" variable block.

Improvements ⬆️

  • Improved the comments in Python code generation when blocks in the workspace are disabled.
  • Improved the menu design for easier navigation

Bug Fixes 🐛

  • Fixed a bug in "avoid_wall" where the drone would not fly forward when range sensor was below a threshold value.

Version 2.1.9​

August 1, 2024​

New Features ✨

  • Added "List" blocks to enhance coding capabilities.
  • The console log now shows the version of the CoDrone JavaScript Library being used.
  • Integrated the "start/stop" buzzer feature from Python into Blockly.
  • Added the capability to download workspace code as a PNG file for easier sharing and documentation.
  • Added a "Return to Docs" button for better navigation back to the documentation in the side tab

Improvements ⬆️

  • Improved UI to display all icons when opening the side tabs
  • Improved battery request messages in the console to reflect getting the drone state data instead

Bug Fixes 🐛

  • Fixed an issue where Blockly miscounted the number of 'start_flag' blocks, allowing users to drag more than one 'start_flag' block if the dragging event was too fast
  • Corrected a buzzer functionality issue
  • Corrected the URL in the release notes menu option to point to the correct resource.
  • Fixed an issue where incorrect URLs displayed Apache and OS version details.
  • Resolved a problem where Blockly could load any URL after the default URL was accessed.

Version 2.1.8​

June 12, 2024​

New Features ✨

  • Implemented an alert when the user forgets to load a colorset
  • Updated Japanese translations
  • Reset the "Run code" button interface when "land" is pressed

Improvements ⬆️

  • Changed "color classifiers" to "color data sets"
  • Disabled "code_is_running" block
  • Enhanced "when start" feature that only allows one block at a time in the workspace

Bug Fixes 🐛

  • Resolved bug where not all labels were loaded from a colorset
  • Resolved bug where right-click delete did not delete the generated code in the Python tab

Version 2.1.7​

May 21, 2024​

New Features ✨

  • Enhanced takeoff command by adding checks for the drone flight state after takeoff
  • Implemented feature that only allows one "when start" block at a time
  • Added multi-language support for the "How to Connect" popup

Improvements ⬆️

  • Disabled the asynchronous "when keyboard press" block to improve stability

Bug Fixes 🐛

  • Fixed bug causing crashes when color sensor returns "unknown"
  • Resolved bug where some blocks don't disable when using the "when start" block
  • Corrected drone model display issue in the connection window without needing a refresh

Version 2.1.6​

April 18, 2024​

New Features ✨

  • New pop-up window when drone or controller disconnects from Blockly
  • Added a notice for JROTC edition users to first calibrate their color sensor before adding a color set
  • Back-end changes to ensure Blockly is checking for the latest versions

Improvements ⬆️

  • Updated wording from "Pair with Blockly" to "Connect to Blockly"
  • Updated messaging for adding or loading a colorset with clearer instructions
  • Back-end changes to improve timing logs
  • "Open" menu option only allows .XML as options

Bug Fixes 🐛

  • Fixed bug with generated Python code for avoid_wall()

Version 2.1.5​

February 26, 2024​

New Features ✨

  • Implemented an error-logging system so users can report an error from the menu
  • Implemented analytics

Improvements ⬆️

  • Updated firmware notifications to match latest firmware releases
  • Updated Korean-language translations

Bug Fixes 🐛

  • Disabled battery requests during takeoff

Version 2.1.4​

February 14, 2024​

Improvements ⬆️

  • Updated drone visuals to match CoDrone EDU (JROTC ed.) when connected
  • Temporarily disabled "Screen" category for JROTC ed.
  • Improvements to firmware notifications in the connection box

Version 2.1.3​

January 23, 2024​

New Features ✨

  • Updated pairing window to reflect messaging about AA batteries

Improvements ⬆️

  • Changed parameters on "flip" functions to match Python function parameters
  • Improved trim slider functionality
  • Improved functionality of the drone LED feature in the connection window

Bug Fixes 🐛

  • Fixed Senior turn_degree() block
  • Fixed Senior get_pressure() block
  • Addressed backend errors to improve performance

Version 2.1.2​

December 21, 2023​

New Features ✨

  • Added ability to change the drone LED color from the connection window
  • Created a new senior block for turn_left() and turn_right() Python functions
  • Added a link to the release notes in the Blockly menu

Improvements ⬆️

  • More small changes in Python generated code output and block parameters to reflect Python library

Bug Fixes 🐛

  • Corrected the generated RGB values for the Junior controller LED block
  • Updated missing blocks for Japanese-language Blockly

Version 2.1.1​

November 8, 2023​

Improvements ⬆️

  • Renamed get_gyro() Senior blocks to get_angular_speed()
  • Completed backend refactoring to update Blockly infrastructure. These changes will not affect your user experience, but they will help deliver a smoother update process in the future.
  • Small changes in the Python generated code output to reflect the latest library