Try to learn something about everything, and everything about somethingThomas Huxley “Darwin's bulldog” (1824-1895)

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public:radio:topics:arduino_sketches [10/07/26 23:12 BST] – [Arduino Sketches] johnpublic:radio:topics:arduino_sketches [10/07/26 23:14 BST] (current) – removed john
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-====== Arduino Sketches ====== 
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-I dabbled with Arduino to build some small projects back in 2021, mostly using the SI5351 PLL chip. A lot was learned from the You Tube channel, and blog, of Charlie Morris ZL2CTM[[https://www.youtube.com/c/CharlieMorrisZL2CTM]] and  [[https://zl2ctm.blogspot.com/]]. 
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-I built a 60m QRP SSB/CW/Digimode transceiver which started as a Direct Conversion DSB radio and then morphed into a superhet SSB rig with 9MHz IF and crystal filter. I was also was in the process of building a phasing RX and CW TX to make an HF CW transceiver - band TBC but it //was// working on 17m when I drifted off the path and abandoned radio for a while. 
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-I've dug out the 60m rig and it's still working. I've got it in my new shack as a 60m monitor RX. One of its features is a "scanner" - just cycling around a selection of channels pausing for a second and moving on which is handy for spotting activity popping up on one or other channel. 
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-Today I also went searching for the Arduino sketches for all my little experiments at the time, and found them on the old laptop I used in the shed-shack at the time. This laptop is physically decrepit - screen broken etc. - but can still be accessed over the LAN. I've retrieved all the sketches and they are linked at the bottom of the page. 
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-It's been a while (5 years!) since I played with Arduino and the 5351 PLL, so I'm a little rusty, but I'm considering making a QRSS TX to run on 60m, if I can find somewhere to put a small base-loaded vertical (perhaps a helical linear-loaded vertical?). The first step will be to write the Arduino sketch to make the 5351 make pretty patterns on a waterfall. Then a simple 500mW PA strip shouldn't be too difficult. 
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-I still have some un-used Seeduino Nano boards and some 5351s, so I think I'll rig up a development board and start writing code. Small baby steps.... 
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-===== Further Information ===== 
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-Page created  : 10/07/26 22:55 BST 
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-Page updated : ~~LASTMOD~~ 
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-{{tag>radio arduino qrss homebrew}} 
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