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Fully assembled Wi-Fi to RS-232 transparent serial bridge with custom firmware, USB-C power, and a rugged 3D-printed enclosure.
ESP32
WiFi
RS232/RS485

GhostBridge GB-01.1 is a fully assembled and tested Wi-Fi to RS-232 transparent serial bridge designed to replace a traditional wired serial connection with a wireless TCP connection. Built around an ESP32 with custom GhostBridge firmware, it creates its own Wi-Fi access point and transparently transfers serial data between the DB-9 RS-232 interface and a connected TCP client. Because GhostBridge operates as a transparent communications bridge, it is not limited to a specific ECU, software application, or serial protocol. It can be used with compatible automotive electronics, embedded systems, industrial equipment, diagnostics, testing equipment, and other RS-232 applications. Features include: USB-C power, DB-9 RS-232 connection, unique device Wi-Fi identification, custom firmware, protective 3D-printed enclosure, and individual functional testing before shipment. GhostBridge was originally developed by Crux Resolve LLC for use with the GhostTune automotive tuning application, but its transparent architecture supports many other compatible serial applications. Custom firmware and OEM configurations are also available for specialized applications. Contact Crux Resolve LLC before ordering to discuss custom requirements. Designed, assembled, programmed, and tested by Crux Resolve LLC in the USA.

Links to code and documentation

Documentation (cruxresolve.com)

Shipping policy

Orders typically ship within 1–2 business days from Illinois, USA. Tracking information is provided when available. Delivery times vary by destination and carrier. Custom firmware or OEM orders may require additional processing time.

GhostBridge GB-01.1 Wi-Fi to RS-232 Bridge

Sold by Crux Resolve LLC

$89.00

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Original Design
This product was designed by Crux Resolve LLC. By buying this product you support original hardware creators.

The seller

Crux Resolve LLC

Crux Resolve LLC logo

Highland, Illinois, United States
0 orders since Sep 3, 2026
Crux Resolve LLC develops practical electronics and software for automotive diagnostics, tuning, and communications. Our products are designed for enthusiasts, technicians, and builders who want reliable tools without unnecessary complexity.
Home of GhostBridge, our Wi-Fi-to-serial hardware platform designed to provide wireless communication between compatible engine management systems and applications such as GhostTune.
Veteran-owned small business. Designed, assembled, tested, and supported in the USA.