Consult the README on the project repo for programming and operating instructions.
- U1 socket - DIP-8
- J3 - 0.1 inch right-angle header
- C2, C3, C4, C5 - 100 nF
- C1 - 1 μF
- R3, R6, R8, R9 - 10 kΩ
Jason Milldrum NT7S
NT7S
/ Si5351_JT9.ino
Last active
January 25, 2026 14:34
Simple JT9 beacon for Arduino driving the Si5351
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| // | |
| // Simple JT9 beacon for Arduino, with the Etherkit Si5351A Breakout | |
| // Board, by Jason Milldrum NT7S. | |
| // | |
| // Transmit an abritrary message of up to 13 valid characters | |
| // (a Type 6 message). | |
| // | |
| // Original code based on Feld Hell beacon for Arduino by Mark | |
| // Vandewettering K6HX, adapted for the Si5351A by Robert | |
| // Liesenfeld AK6L <ak6l@ak6l.org>. Timer setup |
NT7S
/ Si5351FSQ.ino
Last active
April 4, 2025 13:04
Simple FSQ Beacon for Arduino driving the Si5351
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| // | |
| // Simple FSQ beacon for Arduino, with the Etherkit Si5351A Breakout | |
| // Board, by Jason Milldrum NT7S. | |
| // | |
| // Original code based on Feld Hell beacon for Arduino by Mark | |
| // Vandewettering K6HX, adapted for the Si5351A by Robert | |
| // Liesenfeld AK6L <ak6l@ak6l.org>. Timer setup | |
| // code by Thomas Knutsen LA3PNA. | |
| // | |
| // Permission is hereby granted, free of charge, to any person obtaining |
NT7S
/ Feld_Hell_Si5351.ino
Last active
January 24, 2025 15:45
Feld Hell beacon for Arduino and Si5351
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| // | |
| // Simple Feld Hell beacon for Arduino, with the Etherkit Si5351a breakout | |
| // board, by Jason Milldrum NT7S. | |
| // | |
| // Original Feld Hell code for Arduino by Mark Vandewettering K6HX, adapted | |
| // for the Si5351A by Robert Liesenfeld AK6L <ak6l@ak6l.org>. Timer setup | |
| // code by Thomas Knutsen LA3PNA. | |
| // | |
| // | |
| // Copyright (c) 2015 Robert Liesenfeld AK6L <ak6l@ak6l.org> |
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| // Si5351_WSPR | |
| // | |
| // Simple WSPR beacon for Arduino Uno, with the Etherkit Si5351A Breakout | |
| // Board, by Jason Milldrum NT7S. | |
| // | |
| // Original code based on Feld Hell beacon for Arduino by Mark | |
| // Vandewettering K6HX, adapted for the Si5351A by Robert | |
| // Liesenfeld AK6L <ak6l@ak6l.org>. Timer setup | |
| // code by Thomas Knutsen LA3PNA. | |
| // |
NT7S
/ EtherKeyerMiniBetaTest.md
Last active
September 16, 2024 17:42
EtherKeyer Mini Beta Test Notes
NT7S
/ Si5351_VFO.ino
Last active
June 1, 2023 00:06
A simple VFO for the Si5351 for either LCD or OLED
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| /* | |
| Si5351 VFO | |
| By LA3PNA 27 March 2015 | |
| Modified by NT7S 25 April 2015 | |
| Modified to be Si5351 Arduino v2 compliant by NT7S 21 Nov 2016 | |
| This version uses the new version of the Si5351 library from NT7S. | |
| see: http://arduino.cc/en/Reference/AttachInterrupt for what pins that have interrupts. |
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| #include <si5351.h> | |
| #include "Wire.h" | |
| Si5351 si5351; | |
| uint16_t varicode[] = | |
| { | |
| 0b1010101011000000, // 0 NUL | |
| 0b1011011011000000, // 1 SOH | |
| 0b1011101101000000, // 2 STX |
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| /** | |
| * \file | |
| * Functions and types for CRC checks. | |
| * | |
| * Generated on Thu Dec 6 17:52:34 2018 | |
| * by pycrc v0.9.1, https://pycrc.org | |
| * using the configuration: | |
| * - Width = 14 | |
| * - Poly = 0x2757 | |
| * - XorIn = Undefined |
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| #include <si5351.h> | |
| #include "Wire.h" | |
| Si5351 si5351; | |
| uint16_t varicode[] = | |
| { | |
| 0b1010101011000000, // 0 NUL | |
| 0b1011011011000000, // 1 SOH | |
| 0b1011101101000000, // 2 STX |
NT7S
/ Si5351_WSPR_2560.ino
Last active
July 5, 2021 19:10
JTEncode example with two different buffers
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| // Si5351_WSPR | |
| // | |
| // Simple WSPR beacon for Arduino Uno, with the Etherkit Si5351A Breakout | |
| // Board by Jason Milldrum NT7S. | |
| // | |
| // Original code based on Feld Hell beacon for Arduino by Mark | |
| // Vandewettering K6HX, adapted for the Si5351A by Robert | |
| // Liesenfeld AK6L <ak6l@ak6l.org>. Timer setup | |
| // code by Thomas Knutsen LA3PNA. | |
| // |
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