Pip-Boy 3000 Geiger/GNSS Mod Board product portraitREFERENCE ENVELOPE · FW-PB3K-GM-RB
Pip-Boy 3000 sensor mod · FW-PB3K-GM-RB

Pip-Boy 3000 Geiger/GNSS Mod Board

A 60 × 30 mm internal mod PCB that adds hardware-counted Geiger events and GNSS-tagged telemetry to a Pip-Boy 3000.

Prototype pricing TBDWORK IN PROGRESS
Not available for sale
Discuss this development

Work in progress. Contact Ferox Works to discuss the development direction or a related custom requirement.

Design intent

Designed as working equipment.

This Rev B concept packages an SBM-21 tube, regulated high-voltage section, hardware pulse counting, ESP32-S3, and GNSS onto a 60 × 30 mm board intended for internal Pip-Boy 3000 installation. A low-profile harness connector carries power and telemetry to the host while edge-accessible USB-C supports bring-up and service. It remains an engineering and educational modification—not a calibrated or certified safety dosimeter. Mechanical fit, host pinout, high-voltage clearances, calibration, RF coexistence, and enclosure insulation all remain validation work.

Concept rendering of a completed 60 by 30 millimeter Pip-Boy 3000 Geiger and GNSS mod PCB
60 × 30 mm internal mod board · concept rendering
Close concept view of the SBM-21 tube, ESP32-S3, GNSS antenna, high-voltage section, and Pip-Boy connector
Tube + GNSS + Pip-Boy interconnect · concept
Specification

Technical details.

Development targets only. Electrical, mechanical, firmware, safety, compliance, and performance claims remain subject to prototype validation.

Development state
Rev B design review · prototype and calibration pending
Board target
60 × 30 mm · internal Pip-Boy 3000 mod PCB
Detector
SBM-21 miniature Geiger-Müller tube · nominal 390–420 V
Compute
Seeed XIAO ESP32-S3 · hardware PCNT pulse counting
Position + time
MAX-M10S-class GNSS · NMEA UART + 1PPS
Host integration
Low-profile locking harness connector; power and telemetry pinout pending host-fit validation
Service + output
USB-C service · geo-tagged $GM stream over 3.3 V UART, Wi-Fi, or BLE
Safety boundary
Hobby and engineering use only · not a safety dosimeter
OrderingNo finished units are currently offered for sale.
DocumentationEngineering records evolve with the prototype and validation work.
FulfillmentWork in progress. Prototype availability depends on high-voltage validation, tube sourcing, calibration, insulation, and host-fit review. This is an unofficial community modification; Pip-Boy is referenced only to identify device compatibility.
FW-PB3K-GM-RB

Discuss the development or a related custom system.

Contact Ferox Works