I have long been preaching to the walls about how much processor do you really need on a GoPiGo3. While the Pi3B gives the best play time vs processing power for most users, the upgrade to Pi3B+ of the current GoPiGo3 stock configuration added 5GHz WiFi with a slight bump in processing power, without severely impacting the playtime due to the increase in battery capacity of the stock Li-Ion pack.
The GoPiGo3 - Raspberry Pi stack supports a limited height heatsink so even with the Pi3B or Pi3B+ the processing power is actually not the major limiting factor - heat is. While it is possible to use all four processor cores for about a minute or two, only two cores can be steadily taxed fully to remain under the 70degC processor self-protection throttling temperature limit.
Of course as soon as someone mentions OpenCV or TensorFlow(Lite) on the GoPiGo3, I start wondering how a “SuperCharged Raspberry Pi4 GoPiGo3” (with 2 to 4GB memory), could be built to allow the processing advantage of the Pi4.
While reading that a Pi400 (which does not have a fan) could be overclocked to 2GHz for over 30 minutes without nearing the throttling limit, I had to find out what is different that my lowly Pi3B+ cannot even sustain “pedal to the metal” more than two minutes.
Turns out the Pi400 has a honkin’ heatsink to allow unaspirated excellence!
That looks pretty hot under the “J, K, L” keys. If that dark blue is +26°, what’s the white under the right-hand home row? Do I smell plastic melting? [sound bite from The Wizard of Oz “Melllting. . . melllting. . .”]
I’d be interested in seeing a citation for the article.
Oh, and don’t forget that that’s a LOT of metal covering a LOT of surface area. If your robot was named “Sally Fields”, you could put big metal wings on it and call it “The Flying Robot”.
Actually, a couple fans could materialize one of my childhood dreams. In the early 60’s there was an air-cushion bumper car ride at Disneyland, and the Army was trying out air-cushion amphibious assault vehicles. I had a flat dish shaped disk toy with a balloon that floated about on a cushion of air.
I could take the wheels off Carl, mount fans on the motors, add a rubber skirt and voila! The Pi4 cooler can levitate and motivate Carl. I must be tired… I’m starting to believe my day dreams.
Carl with a skirt might be the first non-binary robot?
The Kermits who are of Scotts decent, (supposedly)
The Prouty’s who (I think), were German
– and –
The Powers who were of (I think) Irish decent.
(Not sure, maybe I got the last two backwards?)
(Side note: Francis Gary Powers, the guy that got shot down over Russia, was a cousin of mine on my mom’s side. One of the people who helped shoot him down was Svetlana’s uncle Tolya - and if that’s not a coincidence, I don’t know what is.)
All my ancestors were either preachers or professors, (An old relative, Thomas Kermit, helped found Harvard, and the Harris’s who settled in North Carolina, founding a town named “Harris” were all Methodist ministers. I think the Prouty’s and the Powers were also educators.)
A souped up GoPiGo4 would be great. Although in my case I’m wondering if some of my issues are more the lidar than processing. But then again, I’m doing most of the navigation processing on a laptop, so more on-robot processing would be good.
I’m settling in to my new job, so I’ve broken Finmark out of storage have started working on it again. Yay.