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I was using the computer to trigger the keyer, so the memory function comes from the computer not the ATMEL 328PU. But a small outboard chip might be a more elegant solution and they are only a few bucks.
Chas - NK8O
The Hilltopper microcontroller IC runs ~ $1.80 in quantities of 100. That's the 'raw' IC, and I installed the Arduino bootloader to keep the cost down.
That said, 'project fatigue' had set in by the time I wrapped up the Hilltopper firmware. Getting iambic mode B right cost me a few grew hairs, and I'd had enough. As a practical matter, it's possible that adding a message memory would require an additional pushbutton input to trigger a message playback. Certainly do-able, but with impacts to both the PCB and enclosure layouts.
73- Dave, K1SWL
On Thu, Aug 22, 2019 at 11:04 PM Leland L. Bahr <w5drc@...
OK, Curt, you convinced me at our today's eyeball meeting. I
just ordered a Hilltopper 20. Won't start it until I get my 40
meter Organic W8DIZ (Kits and Parts rig up and running.) I still
wish the Hilltopper keyer had a memory. For me, it seems almost
useless without it. Most likely will use an outboard keyer with a
memory so the internal one won't be used. Why call CQ over and
over again when a memory keyer with the CQ stored in it will do it
for you. Don't understand the reasoning for no memory when a chip
costs around $5 with a memory. Will also take your advice and use
Vishey bypass caps. (I threw the green ones away in the Organic
40 and used good quality Vishey there too.) Other then that, I am
looking forward to getting a Hilltopper 20 on the air.
Lee, w0vt, w5drc
On 8/18/2019 12:27 PM, Curt via
Just want to thank whoever packs these kits with bagged assembly
groups keyed to the instructions and the bom. It makes assembly a
real pleasure. Someone spent a lot of time, effort, sweat
thinking through and packaging this kit. I am only on group 3,
but the journey has been fun. Any misnakes will be my fault :-o