arduinos run at 16 MHz
Comment on TKey: A reasonably secure RISC-V computer in a USB stick
dragontamer@lemmy.world 10 months agoThis thing is like 5x more MHz with 8x more RAM than an Arduino. 18MHz and 128kB is plenty.
Remember: the Apollo flight computer (Moon landing) was accomplished with 2MHz and 4096 bytes of RAM. Even the Arduino is more computationally powerful than the Moon Lander.
vrighter@discuss.tchncs.de 10 months ago
dragontamer@lemmy.world 10 months ago
I stand corrected.
vrighter@discuss.tchncs.de 10 months ago
they actually could be made to run at 20 MHz with some software tweaks. But sram is still much less
dragontamer@lemmy.world 10 months ago
That’s what confused me.
Modern versions of ATMega (ex: the AVR DD) run at 4MHz by default, even if they can go up to 24MHz. Looking back at ATMega328p (which powered the Arduino Uno, aka the one that got popular), the ATMega328p defaults to 1MHz.
Plopp@lemmy.world 10 months ago
So, what? I’m gonna go to Mars with my USB stick RISC-V?
dragontamer@lemmy.world 10 months ago
Any computer application you can think of from the 1970s or earlier can be replicated by a device of approximately the specs listed in this topic.
IE: Airplanes, Space Exploration, Differential Equations, Matrix Multiplications, Simulations, Cruise Missiles, Homing Missiles, Firing Computers (aka: aim-bots), RADAR, SONAR, Radio communications.
To just give you an incomplete idea of what’s possible. So erm… anything you want, really.
Plopp@lemmy.world 10 months ago
Oh, well in that case I’m making a USB connected sonar guided homing missile with an airbag!