3 ms·
Crazy what you can buy nowadays like the Teensy 4.0 with 600MHz base clock Granted that's $20 not $1
by ge96 9mo ago
Crazy what you can buy nowadays like the Teensy 4.0 with 600MHz base clock
Granted that's $20 not $1
- fortran77 9mo agoThe key here is the "PIO" which you won't find on a Teensy. It lets you do extreme "bit banging" tricks including generating video. People have even implemented Ethernet on it. I've used it for some custom serial protocols ("Weigand") used by alarm panels.
- ge96 9mo agoReally I guess I don't know what that is then as I buy the Teensy since it has so much IO, multiple UART, multiple I2C busses, sd card reading, etc... edit: interesting (Teensy | Pico) Special Features: CAN Bus (3x), SDIO, S/PDIF | PIO (Programmable I/O) (8 SMs)
- fortran77 9mo agoThe Pico PIO has an instruction set and can be programmed. You write PIO assembly that runs autonomously on a state machine, with explicit timing (e.g., out, in, set, mov, jmp, wait) and cycle‑accurate interfaces. The CPU communicates via small FIFOs, and interrupts are optional; the PIO can be “fire‑and‑forget” for many protocols.
- ge96 9mo agoThat's cool, I'm not at that level right now, side note I bought an FPGA like 5 years ago and still haven't used it.
- MPSimmons 9mo agoMy sweet spot of choice between power and price is the ESP32 S3 (2x core @ 240mhz) at ~$6 per board, but yeah, the power to dollar ratio is crazy these days, across the board. And they are absolutely tiny and sip power if you write the code well.