My plan is to get a relay board for my Raspberry Pi, write a little bit of code that I can parameterise such that it will power on/off when there is traffic, giving the 33 time to start before sending characters and then powering down after whatever length of time makes sense. I can insert that into the pipeline of commands given to me on another thread, using curl, lame and minimodem.

Regards

Rob

From: [email protected] <[email protected]> On Behalf Of Eric Moore
Sent: 10 November 2024 15:29
To: [email protected]
Cc: Greenkeys <[email protected]>
Subject: Re: [GreenKeys] Autostart

Spinning a 33 up and down again for each message vs running the motor continuously, I would love to know if there was any guidance on the 33 for best practices.

I imagine if you only have say 30 seconds between messages, spinning up and down does more harm than good, one hour, obviously far better to spin down, where is the line?

-Eric

On Sun, Nov 10, 2024, 9:04 AM Rob Jarratt <[email protected]> wrote:

Well my idea is not to do this 24x7, but just as a demo from time to time, but still without it being powered on all the time.

From: Eric Moore <[email protected]>
Sent: 10 November 2024 14:24
To: [email protected]; Rob Jarratt <[email protected]>
Cc: Greenkeys <[email protected]>
Subject: Re: [GreenKeys] Autostart

You need a relay to bring the teletype up. It all depends on how you are receiving the broadcast as to how to set that up.

I would not suggest having a 33 on autostart. They are not very robust machines, and are best saved for live demos and interactive usage in my humble opinion.

-Eric

On Sun, Nov 10, 2024, 8:09 AM Rob Jarratt via GreenKeys <[email protected]> wrote:

I see on the RTTY page it says “Most users have configured their mechanical teletype machines to power up when receiving a broadcast and the power down after the message is delivered.”

How do people do this? I have a Model 33 ASR and I don’t like to leave it switched on for long periods.

Thanks

Rob

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