Teensyduino 1.43
A detailed explanation of 1.43's new features was written on the blog.
Changes since 1.42
Support for Arduino 1.8.6
Ethernet updated to 2.0.0
Fix default Ethernet CS pins on Teensy 2.0 & Teensy++ 2.0
Fix USB Keyboard '#' for UK & Irish layouts
Generic UDP class support beginMulticast
Fix USB MIDI hogging transmit buffers
Fix FreqCount for use at high frequencies
Installer automated install, use --dir=
Fix for Arduino 1.8.6 startup (Arduino issue #7917)
Fix SerialPlotter for Ports(Teensy)
USBHost_t36 fix for Gigabyte keyboard (thanks KurtE)
OctoWS2811 update movie2serial.pde
Remove BYTE define, previously for pre-1.0 Arduino compatibility
Update WS2812Serial documentation
Improve installer help dialog on Windows (advise "app" incompatible)
Workaround a USB buffering issue
Add Arduino's fix for slow 1.8.6 menus on Mac
Changes since 1.41
A detailed explanation of 1.42's new features was written on the blog.
Add teensy_ports program and Tools > Ports "Teensy" section
Add teensy_serialmon - used for Serial Monitor when a "Teensy" Port selected
Fix USB Touchscreen
Add USB Touchscreen examples
Fix FlightSimFloat on Teensy 3.5
Fix USB bcdUSB number
Fix KEY_MEDIA_RANDOM_PLAY
Update OneWire, PS2Keyboard, SerialFlash, Time, PS2Keyboard
Unified logging in Teensy Loader's Verbose Info window
Fix teensy_ports crash when/if Teensy Loader closes
major USB device detection code cleanup....
teensy_reboot now uses device location info from Ports menu
teensy_ports quits automatically when Arduino no longer running
Optimize memory usage in Teensy Loader PNG image handling
Fix Teensy Loader Verbose Info menu Log > Clear
Improve elapsed time in teensy_ports, use native monotonic time
Drop support for Arduino 1.8.2 and 1.8.3 and 1.8.4
Fix incorrect serial monitor title bar on Windows
Workaround for 1 second lag when Teensy Loader not running
Fix non-serial reconnect on Windows XP (workaround missing DBT_DEVNODES_CHANGED)
fix teensy_ports and teensy_serialmon on Mac High Sierra
fix serial monitor title bar & online/offline status parsing from teensy_serialmon
fix teensy_serialmon verbose info in serial monitor, now prints to Arduino console
Fix Teensy Loader Help > About stalling verbose info log from other programs
Fix Teensy Loader File error dialog stalling verbose info log from other programs
fix blank lines appears in verbose info log on Windows
teensy_port better handling for large number of devinst on Windows (eg, MIDIx16)
Better messages when retrying serial open on Windows (eg, with USB "Everything")
show teensy_reboot output on Windows as it occurs, fixed wait until teensy_reboot exits
fixed sending reboot request to some com ports
fix teensy_ports incorrect append to devinst list on Windows
fix logging of windows device change events
prevent teensy_serialmon from interfering with HID bootloader access in Teensy Loader
remove #include from wiring.h, allowing faster compile for most C++ code
precompile Arduino.h, allows some speedup of rebuild all
update core library, Wire, Audio, Bounce to use precompile Arduino.h
Reduce startup delay from 400 ms to 300 ms
fix teensy_serialmon asser of DTR on Windows, fixes (bool)Serial
(bool)Serial to use DTR only, fixes Serail remaining true after serial monitor close
fix truncated usbmodem names in Ports menu on Macintosh
Verbose info log now uses high res time on Windows 8 & 10
Verbose info log users 1ms res time on Windows XP & 7 (was 16 ms & 10 ms)
Fix Verbose info random order for same timestamp events - now always chronological
Add numbering of non-loader verbose logging instances
Trim excessive verbose logging of status communication
Updates to audio library documentation
Add Teensy Loader about dialog icon (was generic info icon)
Teensy 3.5 now supports use of 256K RAM
EthernetClient fix for forced connection close
Small speedup to analogWrite for DAC pins
Fix DMAChannel transferSize() on Teensy LC
Fix FTM_CONF register bitfield defs
Update ADC library (Pedro Villanueva)
Audio: Add freeverb mono & stereo
Audio: Granular pitch shift & freeze effects (Bleep Labs)
Audio: envelope status functions
Audio: Fixes to waveform object
Audio: Add variable triangle waveform
Audio: Add modulated waveform, support for freq & phase modulation
Audio: Add simple amp/switch object
Audio: Add PDM input
PS2Keyboard: add UK & Spanish layouts
TimeAlarms: minor fixes
USBHost_t36: Joystick fixes (KurtE)
Macintosh build now uses 64 bits
Fix Teensy 3.5 stack address (thanks Frank)
Better detection of Teensy model in Ports menu
Audio: fix WM8731 input select
Improve multiple instance check in teensy_ports
Add -L option to teensy_ports (intended for PlatformIO)
Treat "narrowing conversion" as compiler warnings, not errors
Fix product ID for Flightsim+Joystick USB type
Audio: allow WAV files with extra/junk sections before "fmt" info
Ethernet: document Ethernet.init(cspin) in all examples
OctoWS2811: Fix timing problem on Teensy 3.5
USBHost_t36: Fix clobbering of pipe config on endpoint size change
USBHost_t36: Improve enumeration of Multi-TT hubs
Handle attempt to reopen serial port, clicking button while Arduino compiles
Windows: teensy_serialmon detect orphaned from Arduino IDE condition
Avoid unnecessary delays when upload can't find any board
Print more informative messages about selecting board in Tools > Ports
Added ARM 64 bit experimental installer (forum only, beta)