Paired seven-channel sampled digital-I/O radio endpoints with explicitly configured channel directions.
Baseline documentation snapshot: 2026-10-11, before the requested connector/protection/usability revision program. New revision features require their own reviewed source and qualification evidence.
This page documents an unqualified engineering study, not a released or tested product. Saved CAD, renders and automated checks do not establish a safe assembly, compatible cable, firmware support or a usable current rating.
Board-specific qualification limits: Retained ERC/DRC/opens/parity and assembly-shape checks zero;83 checklist items unsigned. Firmware/link-loss, RF, host budget, exact stock and physical qualification open.
The retained v12 uses an MDBT42Q module with integrated nRF52832 for sampled seven-channel digital I/O. Channel directions are configured explicitly; no external nRF24 radio or expander is required by this selected architecture.
Power off before changing connections. Use the selected schematic and a continuity check to verify connector orientation and pin numbering before first power.
Gadgeteer GPIO is 3.3 V logic. Radio supply peaks, bias states, direction contention, pairing, firmware and link-loss safe states require qualification. It is not a transparent analogue, PWM, SPI, I²C, STEP/DIR or safety-interlock replacement.
See current review. Retain v12 integrated MDBT42Q nRF52832 sampled seven-channel architecture; no external radio/expander needed. Conditional V1 C2 bypass reuse; final bias/LED values preserved. No successor. Current selected v12; retained native/stock/physical qualification limits remain explicit.
Use the configuration and firmware contract for the exact selected revision. Do not copy another module’s socket assignments or assume that an unused pin is available. First-article work must verify source selection, reset/unplug behavior, cable orientation and the actual load or sensor interface before normal operation.
The following are requirements for the next design iterations; this page does not claim they are already fitted:
Documentation route: smoothieware.org/extensions/wireless-gadgeteer-extender.
The 2026-10-11 upgrade program has saved additional candidates v13, v14, v15. These studies preserve the historical design described above. Their connector, LED, mechanical and protection changes are revision-specific and remain unqualified.
See the per-board changes, failures and remaining work and mandatory family specification. Use the source hash and native check for the exact candidate being reviewed; do not infer hardware ratings from a rendered population.
The three additional revisions are v13, v14, v15. They are engineering studies; saved CAD and renders do not release the hardware. The latest candidate is described below. Older baseline notes above remain historical.
249643da6d382ded8c911c67e3f2365d68f2e58c7ccccf1c3ca56da00553a888.Applicable protection, current-path, thermal, pinout, cable access and physical tests remain open wherever the linked board record has not verified them. A zero native-error count does not close those gates.
Protected source v18; current PCB SHA-256 7cc492849c362ed2d2a481624ab3cf8c247aac8725129ad46560462c733fecf3. Fresh checks: zero enabled PCB errors/opens/parity and ERC errors; 18 PCB warnings. Electrical geometry, project rules and 61 historical files unchanged. Verified 29 model entries, 17 exports and 6 current population views, all inspected. Full documentation URL readable. Inherited rear instruction and reference overlaps remain; antenna keepout and voltage restrictions preserved Inherited native warnings and enabled-rule exclusions remain explicit Physical/thermal/current/connector-fit qualification open No priced or area savings established by annotation candidate.