al177

USB 5V power can be equally noisy, even from a powered hub, so that argument doesn't make any sense. PCIe has a high current 12V rail available that has much more margin than USB for filtering with an LDO and run your signal chain well above the noise floor of the components.

Besides, Asus Xonar as in the picture can take 12V from a drive connector to bypass the motherboard PCIe 12V "just in case".

Try running your dryer with the lid propped open a bit. Most Sunlu dryers don't have a way to get rid of the humid air pulled out of the filament.

Most of that cost is modem I'm sure. The ESP32, RP2040, and all the support hardware around both add under $5 to the BOM.

There are a bunch of boards with a combo of RP2040 and ESP32, probably because the RP2040 has the PIO accelerators and the ESP32 is much more rigid with I/O. If anything, I'd ditch the ESP32 on this board if your application doesn't need WiFi or Bluetooth.

Edit: I didn't realize the ESP32 is the -C3. It's no slouch, but your code shares the single risc-v core with the radio stack. So it's better off here as a dedicated radio processor and letting the RP2040 run your application if you need more grunt than polling a sensor every so often.

I mean, if I had the disposable income I'd get a Flipper Zero to mess around with, but it's not on my list of things I need for my hardware hacking go-bag.

What's the need you're trying to fill?

If you want to get into RF, and not just for hacking a few specific protocols, an RTL-SDR is a better choice and much, much cheaper than a Flipper Zero. For $40 on Amazon you can get an RTL-SDR.com kit complete with antennas that will let you capture data from smart meters, aircraft beacons, police radio, and even detect individual cars driving nearby by capturing serial numbers from their TPMS sensors.

Thanks to Alec I have strong opinions about extension cords and gas lanterns.

Next week: Fedora meets a new friend named Lennart while on her way to Multiuser Mountain. Will they be able to cross the init bridge without being caught by Sammy the Systemd Hating Troll?

That's why many modern SoCs have a smaller core for realtime in addition to larger application processors. TI Sitara (Beaglebone) has 2 fast custom arch coprocessors for IO with access to most pins and the ability to DMA into the AP's address space. All Raspberry Pis up through Pi4 run a proprietary ThreadX runtime on a graphics processor (VPU) to handle bootstrapping the ARM APs, housekeeping, and a large part of the IO.

Scratch machine to test Ansible playbooks for maintaining and restoring your other servers.

Also Professor Charles Javier