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Smallest RISC OS portable?

Subscribe to Smallest RISC OS portable? 7 posts, 3 voices

 
Jun 16, 2017 2:32pm
Avatar Chris Hall (132) 3227 posts

Is this the smallest RISC OS portable computer? Measuring just 4″ by 3″ x 2″ and weighing 10 oz. this computer based on a Raspberry Pi model A+ has a 2000mAh battery, an OLED and PaPiRus display, GPS module (providing real time clock) and its battery life of around 8 hours (it uses about 170mA) can be supplemented by adding an external power supply or battery to float charge the Li-Po internal battery.

The electronic ink display is updated every 15s or so (in bright sunlight it fades quickly) and the OLED display shows speed (in mph) plus (at low speed) detail showing number of satellites, grid reference etc. As you move around, an Anquet AEF file is created logging the locations visited – this can be loaded into mapping software to replay the route.

See http://www.svrsig.org/images/JB096.jpg for a picture and http://www.svrsig.org/PiGPS.htm for a description of the project.

 
Jun 16, 2017 9:17pm
Avatar Raik (463) 1948 posts

Nice, very very nice project. I am impressed.

Is this the smallest RISC OS portable computer?

Mmm, how you define “RISC OS portable computer”? Is not usable like a RISC OS computer. More a RISC OS GPS tracking device ;-)

Maybe my HandPi could be a smaller one but I’m to stupid to make RISC OS work with this touchdisplay.
For me, my Pandora is the smallest RISC OS portable with GPS inside (Have made a shorter battery and take the GPS to the free space).

 
Jun 17, 2017 8:31am
Avatar Chris Hall (132) 3227 posts
Mmm, how you define “RISC OS portable computer”? Is not usable like a RISC OS computer. More a RISC OS GPS tracking device ;-)

Well you can plug in an HDMI monitor and a USB keyboard/mouse if you want. Adding a touchscreen makes it quite a bit bigger.

 
Jun 19, 2017 9:15am
Avatar Raik (463) 1948 posts

Well you can plug in an HDMI monitor and a USB keyboard/mouse if you want.

Than you lost small and portable ;-)

In my eyes this is not the question. Small, portable… not really important at first. Is it usable for the things you “need”. Is it so and additional it is small and portable … perfect.

 
Jun 23, 2017 4:11pm
Avatar Chris Hall (132) 3227 posts

Keeping with small and portable, I have taken it on a trip to the shops and captured the images here. The OLED display is actually updated every 2s but I have only captured an image each time the electronic ink display is updated – about every 15s.

 
Jun 23, 2017 8:06pm
Avatar Rick Murray (539) 11793 posts

What’s the big number on the OLED? Trying to work out what - 3 6 5 7 15 20 20 22 13 29 27 11 - - - - - - - - - 5 - 27 25 26 10 18 20 18 9 9 2 1 - - could mean.

 
Jun 24, 2017 8:46am
Avatar Chris Hall (132) 3227 posts

It’s miles per hour (obtained from the GPS data, converting from knots to miles per hour). Easy when you know…

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