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Practical reference materials condensed from years of field work. Download immediately, use indefinitely.
Digital Guides & References
The Complete OBD2 Diagnostics Guide
A 50+ page field-tested guide covering OBD2 fundamentals, code interpretation, diagnostic procedure, scanner selection, and manufacturer-specific quirks. Written from actual scan tool experience.
Laptop Upgrade Compatibility Database
Spreadsheet covering 200+ laptop models with verified RAM maximums, M.2 slot types, Wi-Fi card form factors, and upgrade recommendations. Searchable, sortable, regularly updated.
Home Network Setup Blueprint
Network diagram templates, equipment selection guides, VLAN setup instructions, and Wi-Fi placement strategies for home and small office setups. Includes a gear checklist.
The Subaru Fault Code Reference
Complete reference for Subaru OBD2 codes including manufacturer-specific B, C, and U codes that generic scanners miss. Includes P1604 diagnostic flowchart and common Subaru-specific causes.
Zebra Scanner Quick Config Cheat Sheet
123Scan ADF rule templates, common symbology configurations, and barcode scanner setup procedures for distribution and retail environments. Print-ready reference card.
Merch
Print-on-demand gear for people who read the error message. Printed and shipped by Printful — no inventory, no guessing on sizes.
External link — Printful-powered print-on-demand store.