Start with the exact hardware
HaleHound kit assemblies, their QDtech display boards and individual Elechouse modules have separate records. Search HaleHound, E32R28T, E32R35T, Elechouse or a complete module code. The original non-SPI CYD differs from the SPI-exposed CYD. An assembly wiring diagram is not a complete board pinout.
Read the saved guide with its revision notes
Build Guide v1.4.1 is retained with its original pages, source hash and credits. The galleries include wiring, radio-carrier connections, PN532 connections and partial GPIO labels. Its 3.5-inch instructions are marked work in progress in places. Conflicting CS assignments and ambiguous GPS TX/RX labels require exact-board clarification. Its regulator terminology and power claims were not added as verified Power Desk ratings.
Connector families are not interchangeable
PN532 V3, V4, Evolution, external-antenna, USB and MINI are separate records. PN7160 MINI I2C uses a different connector from the standard PN7160/PN7161 I2C boards, and PN7161 MINI SPI has its own wiring reference. The full-size and MINI ST25R3916B boards remain separate. Selected manufacturer connector tables include searchable per-pin purposes beside their source images.
Known source differences and remaining gaps
The serial RFID V5 product links a legacy V3 manual. PN5321 MINI web and PDF specifications disagree on supply range and protocol support; both the conflict and the saved PDF revision are recorded. Manufacturer current measurements are not Black Wire bench tests. Some products still have only labels, tables or photos. Exact Ebyte E07 and Cinder Ferret carrier revisions need further review.
Credits and reuse
HaleHound, Bkbroiler, Elechouse, LCDwiki / QDtech and the original diagram and hardware contributors retain their artwork rights. Black Wire provides the organization, metadata and review notes. Asset-specific redistribution and print permissions are not established by our editorial license. First Edition / 2026 remains unchanged; the book draft is not part of this update.