[redfast00]

The author uses an FPGA, which is notoriously hard to program for. In the recent years, microcontrollers have become more and more capable: for example the Raspberry Pi Pico costs about 4 USD and can run at 250MHz and up. Thanks to PIO (programmable IO), which is basically a small programmable state machine running on the IO pins, it's possible to use this for voltage glitching attacks.

[KRAKRISMOTT]

You realize that Intel and AMD and countless electronic engineers learned to program them right? How do you think those "capable" microcontrollers' main microprocessors are designed?

[ofrzeta]

It's worth mentioning that there's the Raspberry Pi Pico W with integrated Wifi support, that makes it an alternative to the ESP32 in many projects (it's about 9 USD, though).