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Morse code, whereas first developed within the 1800s, stays a viable approach to ship brief textual content messages with a minimal of elements. The problem right here is {that a} comparatively small variety of individuals know learn how to interpret such textual content encoding, which alternatively would additionally make it an effective way to share data between you and one other particular particular person. One may even use it to transmit a candy message for Valentine’s Day — subsequent 12 months. If you happen to’d prefer to get a bounce on issues, Technoblogy’s David Johnson-Davies has an fascinating messaging resolution within the type of his Morse Code Message Pendant.
This little appeal employs an ATtiny10 microcontroller to ship out a blinking gentle message by way of an onboard LED. If you wish to make it much more secret, you possibly can use an infrared LED, which might make the message invisible to the bare eye, however viewable by way of a cell phone’s digicam. Regardless of the ATtiny10’s minuscule 1,024 bytes of flash program reminiscence, the system is ready to retailer and transmit over 100 phrases — hopefully effectively sufficient house to get your level throughout.
Code together with the board design is accessible within the mission’s write-up. As famous there, the code works by wanting up the completely different characters on a program message string, and translating them right into a collection of “dot” and “sprint” LED pulses. The submit additionally goes over the {hardware} setup, in addition to learn how to make a handy pogo pin programmer for it.
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