Re: New for pi-day, the Rasberry Pi 3 B+
The 8 bit Atmel processors are 20 or 30 years out of date, but a big community of users to get help from.toggle quoted messageShow quoted text
The $2 Blue Pill ARM STM32F103's seems the current best bang/buck.
But something small and stupid is a very good place to start if you really want to know what a computer is.
As I mentioned in my previous post, the AVR Core section of the ATMega640 datasheet is about 6 pages long.
Figuring out an ARM would be somewhat more difficult.
The Asus Tinkerboard could be interesting to folks here as an alternative to the RPi's for standalone digital.
Though most of my projects don't need that much processing power.
And many are just fine with an 8 bit ATMega.
The RPi-zero might be a good choice for a standalone rig with digital modes.
A brief google search suggests it can be throttled back to well under 100ma,
making it less than the uBitx receiver and thus perhaps good enough.
That supply current will rise considerably when you give it a job doing FFT's.
Far less processing power than a Tinkerboard, but less battery power too.
Oh, and $5.
Good time to be a geek.
I remember back in the late 70's, trying to build a Z80 system from scratch.
Never got completed.
Minimalist kits were $1k+ in 1978 dollars, and considerably less powerful than these ATMega's.
On Thu, Mar 15, 2018 at 09:07 am, ajparent1 wrote:
For performance the Asus Tinkerboard has it seriously beat. Not only faster 1800mhz but twice the ram 2gb.