You will be able to experience the best results at night or with low ambient light. Attempting to design one was an opportunity to learn about detecting data patterns, try out some case build ideas I had as well as learn a bit more about Morse Code. It covers radio history, codes, electronics and programming. If your device's frame rate is too slow, decoding will most certainly be impossible since at least 7 fps are required for the lowest available transmission frequency in the app.Īs the blinking light gets farther away from the phone, the decoding process gets inaccurate. A Morse code decoder has a lot of elements that interest me. Cyrillic (Russian, Serbian, Bulgarian, Ukrainian, etc) Latin alphabets (English, Spanish, Italian, Portuguese, etc.) Supported languages for transmission, decoding and translation: Supported languages (not for transmitting) Choose any of the available camera resolutions in your device. Set Day/Night mode for decoder sensibility to light. Increase sensibility to light when decoding (useful when light source is far). Includes a Morse Code International Telecommunication Union (ITU) alphabet for reference. Translate from text to Morse and vice versaĪllows translation from plain text into Morse code and translation from Morse Code to text. That is, using either the flash or the speakers. Transmit Morse code using camera flash and speaker (beeps)įor an entered message, the user can select whether to transmit the morse signal in the form of light or sound. This new setting will be saved for as long as you stay in the app. If the light blinks at a frequency that is too fast or too slow (using the default transmission settings as a comparison) expect to lose the first 2 characters, but after that, the decoding algorithm will adapt itself to the new frequency and you will lose NO more characters. It may take several initial characters containing both dots and dashes before the WPM speed estimation acquires the actual Wpm and decodes the characters correctly.Simply point the camera to the blinking light and make sure the light stays in the redĬircle. Even though Morse Decoder uses a 200Hz wide AFC (automatic frequency control) it is recommended to move the slider always on top of the vertical line. If there is a tone present the waterfall will display a blue or white vertical line (As stronger the signal as brighter the line) Slide the red rectangular on top of the vertical line. Place your Android phone against the speaker of the radio or the device which transmit the Morse code. How to decode morse with a Android phone: Speeds of less than 4 Wpm (Words per Minute) to more than 50 Wpm can be decoded. The detected signal will be shown as a graph and several algorithms will then detect the speed of the Morse code and convert them into readable text. The DSP filter is followed by an automatic gain control (AGC) to compensate for changing signal strengths. A narrow band DSP filter can be set for the frequency of the Morse code tones by tapping the waterfall. Morse Decoder includes a “waterfall” to show a frequency spectrum of about 50Hz to 2300Hz. Morse Decoder can be used by Ham Radio operators or anyone else interested in decoding Morse code from a Radio or any other device. Morse Decoder is an Android phone apps to decodes Morse code characters through the built-in microphone of your Android phone.
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