Bit-banged 10BASE-T Ethernet and Wi-Fi router in Rust on the Pico 2 W
Software 10BASE-T Ethernet (using PIO to bit-bang TX and RX) and wireless router on the Raspberry Pi Pico 2 W. Running cyw43 + an async executor in rust on the RP2350's RISC-V cores. Using cheap and minimal external hardware (just a magjack and ISL3177E RS-485 transceiver). I wanted to see how far I could get with the cheap, MCU-based, Wi-Fi router idea and learn some more about using rust on the RP2350 and RISC-V. Definitely not a good choice for a home router but it could be useful for low-rate IoT traffic.
Bit-banged 10BASE-T Ethernet and Wi-Fi router in Rust on the Pico 2 W launched on June 4, 2026 with 5 votes, #2,466 of 22,647 launches that month and more than 75% of that year's launches.
What it does
Bit-banged 10BASE-T Ethernet + Wi-Fi router in Rust on the Raspberry Pi Pico 2 W - mattdeeds/pico-10base-t-rs
Software 10BASE-T Ethernet (PIO bit-bang TX and RX) and wireless router on the Raspberry Pi Pico 2 W . Uses the dual Hazard3 RISC-V cores with pure Rust ( no_std ). A ~$5 micro talks 10 Mbit Ethernet to a real network with PIO, DMA, a RS-485 transceiver, and magnetics. Rust port of C project , which extended kingyoPiyo/Pico-10BASE-T (the original C/PIO Manchester TX-only design) with a RX path — Manchester decode over an RS-485 transceiver. This Rust rewrite runs on rp235x-hal , exposes the NIC as a smoltcp phy::Device , then grows into a NAPT router with a cyw43 Wi-Fi AP. Full detail + method in docs/performance.md . Headlines (measured on real hardware): It's a fun software-PHY NIC and a…from github.com
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