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This article describes a stand alone beacon keyer based on the Simple Morse Beacon Keyer on Arduino Nano hardware.
The implementation is a small piece of Veroboard with female header sockets and a 2n7000 keyer FET, and a Nano with male header pins.
Fig 1 shows the Nano side of the assembly which is wrapped in clear heat shrink tube for protecion.
Fig 2 shows the underside of the Veroboard.
The Nano was loaded with a custom Optiboot bootloader that supports EEPROM and does not flash the D13 pin (which is used for the keyer output).
Fig 3 shows the message programming with options. This sends the callsign at QRSS1 then key down to fill out a five minute interval and then repeat.
Version | Date | Description |
1.01 | 18/07/2020 | Initial. |
1.02 | ||
1.03 | ||
1.04 | ||
1.05 |
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