| BuzzerPIO_RP2040 | Ultrasonic PWM tone generation for passive buzzers using the RP2040 PIO coprocessor. |
| DHT22PIO_RP2040 | Hardware-accelerated DHT22 library using the RP2040 PIO coprocessor. |
| OneWirePIO_RP2040 | Hardware-accelerated 1-Wire and DS18B20 library using the RP2040 PIO coprocessor. |
| USBSnifferPIO_RP2040 | Passive USB 1.1 packet sniffer using the RP2040 PIO coprocessor. |