MorseReader

Read Morse and ITA2 LEDs

Only for iPhone

39,00 kr · Designed for iPhone. Not verified for macOS.

iPhone

Turn your camera into an optical diagnostic receiver for short status messages A microcontroller does not need a display to tell you what it is doing. Sometimes one LED is enough. MorseReader treats the camera as an optical receiver. Point it at a flashing status LED and read the message as text. Without a display, serial cable, network connection or additional receiver hardware. The raw camera stream is around 4 Gbit/s. Your status message may be 10 bit/s. Sip the useful bits from the camera firehose. Finding the mushy waveform in that torrent of pixels is MorseReader's problem. TWO RELATED COMMUNICATION MODES Classic Morse Decode traditional Morse containing letters, digits and spaces. MorseReader estimates the dot duration automatically, with an optional manual timing override for difficult signals. High-Speed Teletype Decode Manchester-encoded ITA2, the historical five-bit teleprinter successor to Morse. This mode supports the conventional ITA2 LTRS and FIGS alphabets, including their letters, numbers and punctuation. A few characters are enough to answer useful questions. A pump could report its current flow or warn that it is running dry. A solar charge controller could show generated power and battery level. A remote sensor could report temperature, humidity or a threshold alarm. A motor controller could expose speed, load or a fault code. Even a device stuck during startup could identify the boot stage or sensor that failed. MorseReader displays these short messages in real time. It is not a replacement for a serial console, but it is considerably more informative than “the LED is blinking.” FEATURES • Decode flashing LEDs using the camera • Classic Morse and Manchester-encoded ITA2 modes • Automatically detect and track a flashing LED • Tap an LED to select it manually when needed • Display decoded text and raw symbols in real time • Automatically estimate signal timing • Apply a manual timing override for difficult signals • Review, save and share received diagnostic messages • Process camera data entirely on-device • No account, cloud service or additional receiver hardware required BUILT FOR HARDWARE DEVELOPERS MorseReader is useful for: • Arduino, ESP32, RP2040 and other microcontroller projects • Embedded Linux devices, single-board computers and Raspberry Pi systems • Boot diagnostics and power-on self-tests • Operating modes, sensor readings and controller state • Error codes and firmware status • Field diagnostics • Devices without displays or accessible debug ports A single LED can provide a modest but useful diagnostic channel while continuing to function as an ordinary status indicator. MorseReader does not connect directly to your equipment. Its firmware must flash an LED using supported Morse or Manchester-encoded ITA2 timing. Optical decoding still involves physics. Results depend on LED brightness, ambient light, focus, exposure, camera stability, transmission speed and distance. Animated screens are useful for demonstrations, but physical LEDs are generally more reliable because display refresh and camera exposure can distort timing and colour. MorseReader is a diagnostic aid and should not be the sole channel for safety-critical controls or alarms. EXAMPLE Example LED sequence for test: https://morsereader.and-rs.dk/test-morse.html

Ratings & Reviews

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Improved automatic LED detection, tracking, and timing estimation for more reliable decoding. More efficient signal processing

Version 1.1

The developer, Anders Mørk-Pedersen, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary based, for example, on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Size
    • 1.9 MB
    Category
    • Developer Tools
    Compatibility
    Requires iOS 16.6 or later.
    • iPhone
      Requires iOS 16.6 or later.
    • Mac
      Requires macOS 13.5 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    • English
    Age Rating
    4+
    Provider
    Anders Mørk-Pedersen
    • Anders Mørk-Pedersen has identified itself as a trader for this app and confirmed that this product or service complies with European Union law.
    • Address
      Gladsaxe Møllevej 107, 1tv
      2860 Søborg
      Denmark
    • Phone Number
      +45 93999772
    • Email
      anders+morsereader@and-rs.dk
    Copyright
    • © 2026 Anders Mørk-Pedersen
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.