Radio Shack used to sell 0.5 volt solar cells. It was mentioned in "Portable
100" that if you connected 14 of them in series, they would power an M100. I
put it together and it works. 0.5 X 14 would be 7 volts but the computer draws
the voltage down a bit.
-------- Original message --------From: B9 <[email protected]> Date: 10/28/25
1:20 PM (GMT-08:00) To: [email protected] Subject: Re: [M100] PS I tried my
5W, 5V solar panel with a Tandy 200 and it didn't work. It would show activity
on the LCD but never made it to the menu before freezing up. Could be because
it was a cloudy day and through a glass window. Could be because it doesn't
output anywhere close to "5W".It's too bad, since the panel is only a little
larger than the Tandy 200 and could easily have been mounted on the lid.--b9On
October 23, 2025 6:45:27 PM PDT, B9 <[email protected]> wrote:
Very cool! I remember hearing about that guy but didn't know he had a Model T.
The article mentions he had "a 12V battery, and a five-watt solar panel."I'm
presuming he used the solar panel to charge the battery and then used the
battery to run the Model T. "Direct solar" as AbortRetryFail mentioned might be
possible, but I'm not sure what the advantage of that would be. I think I've
got a 5W panel, so maybe I'll give it a shot just to see. --B9On October 23,
2025 3:48:40 PM PDT, Mike Stein <[email protected]> wrote:
A solar powered
M100...https://bikepacking.com/plog/steve-roberts-computing-across-america/On
Wed, Oct 22, 2025 at 2:53 PM [email protected]
<[email protected]> wrote:
What are the limits/parameters of the 100's power supply circuit anyway. Has
anyone dug into it?Direct solar power for example would be cool, but I'd be
reluctant to experiment on the 40 year old hardware... On October 21, 2025
4:20:27 PM EDT, Scott McDonnell <[email protected]> wrote:
This shouldn't be a problem.
On 10/21/2025 10:24 AM, VANDEN BOSSCHE
JAN wrote:
I
found some stabilized power supplies, discarded but new.
They are not compatible with the models T, but I suppose I
can always adapt the pin. I’ve done it with USB-cables too.
But these are 7,5 V, 650 mA. Isn’t that too much ? AFAIK, a
standard Tandy wall-wart is 6V, but not stabilized.
Jan-80
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