[Dprglist] SBC's for Controlling Robot

Murray Altheim murray18 at altheim.com
Tue Nov 23 22:55:18 PST 2021

On 24/11/21 6:45 pm, Rud Merriam via DPRGlist wrote:
> Folks at the meeting mentioned that Pis generally don't pull the
> power that is specified. I looked again at the specs for earlier
> Pis. I'd forgotten the Pi 3B had built in WiFi. Since I have one,
> I powered it up using an SD card that was already in place. It 
> booted fine and power draw is much lower than the 'rating'. Now 
> I just need to remember how to set up doing remote development
> from my PC to the Pi.

Hi Rud,

You can either use a VSCode plugin to remote in to the robot from a
desktop, or do as I do, which is to ssh in and do my work on the
robot itself, pushing my work to github. I'm a command line/vi person
so this is kinda a default anyway.

> Might look at a Pi 4 when they become available in the middle of 2022.

If you don't need the horsepower of the Pi 4, there's also the
Raspberry Pi Zero W (with WiFi) and the new four core version of it,
the Raspberry PI Zero W 2. The former was benchmarked* at about 120mA
with WiFi on, 80mA with it off. The newer model resp. at 120mA/100mA.
I've used the Zero W for a number of robots, and just received my
first Zero W 2 a few days ago. Very tiny board but very useful, and
theres's a lot of accessories available for it, like the PiconZero.
I've had a bunch of them running security cameras around my house 24/7
for years now, entirely reliable.



* https://www.pidramble.com/wiki/benchmarks/power-consumption
Murray Altheim <murray18 at altheim dot com>                       = =  ===
http://www.altheim.com/murray/                                     ===  ===
                                                                    = =  ===
     In the evening
     The rice leaves in the garden
     Rustle in the autumn wind
     That blows through my reed hut.
            -- Minamoto no Tsunenobu

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