GoForSmoke:
Show em how you made the tables. Probly got no clue about PROGMEM.Don't some semi-cheap ARM boards have FPU's and 64K+ RAM?
Yep... The STM32F104 is the low-end of the series with FPU running at 84MHz. A quick search of AliExpress shows the least expensive board I could locate in one search was this one for $21 USD. ..... The specific uC utilized in this board is here.
F4 selection matrix
Ray