CYKPYK-RS232

Dual-channel RS-232 over Ethernet bridge built on RP2040 with hardwired W5500 Ethernet — no Wi-Fi reliability issues, deterministic low-latency forwarding. Each RS-232 channel (RS0 / RS1) opens as a transparent TCP socket on ports 5001 / 5002, accepting up to two simultaneous clients that both see the same serial traffic in real time.

Configure baud rate (300–921600), parity, stop bits and data mode independently per channel. HEX mode forwards bytes as space-delimited hex strings; ASCII mode passes text transparently. All serial settings apply instantly without interrupting active TCP connections.

Tag system: store up to 32 named serial command sequences per channel in onboard flash. Fire them by name with a single TCP command — ideal for RTI Control, Crestron and Extron macros without encoding binary payloads in controller programming.

Configured via TCP port 5000 or USB-CDC backup. DHCP or static IP. UDP broadcast discovery on port 5004 — the CYKPYK Tool finds every device on your L2 segment automatically. All settings survive power cycles and UF2 firmware updates.