Differences

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--- open-earable-exg-factsheet [2026/06/11 16:30] – fabricio
+++ open-earable-exg-factsheet [2026/06/11 16:31] (current) – [Firmware] fabricio
@@ Line 9: / Line 9: @@
 ===== What you need =====
- * Bare **3.3 V microSD breakout** (socket only — //no// 5 V level shifters or regulators; Arduino-style 5 V shields are unsuitable)
+  * Bare **3.3 V microSD breakout** (socket only — //no// 5 V level shifters or regulators; Arduino-style 5 V shields are unsuitable)
- * **JST SH 4-pin cable** for J2 — any Qwiic / STEMMA-QT cable fits mechanically (housing SHR-04V-S-B)
+  * **JST SH 4-pin cable** for J2 — any Qwiic / STEMMA-QT cable fits mechanically (housing SHR-04V-S-B)
- * **JST SH 8-pin cable** for P1 (housing SHR-08V-S-B), only 3–4 wires used
+  * **JST SH 8-pin cable** for P1 (housing SHR-08V-S-B), only 3–4 wires used
- * microSD card, FAT32 formatted
+  * microSD card, FAT32 formatted
 :!: **Pin order on J2 is NOT Qwiic order.** Qwiic cables are wired GND, 3V3, SDA, SCL — J2 is SCL, GND, 3V3, SDA. Always go by **pin position**, never by wire color.
@@ Line 61: / Line 61: @@
 The Zephyr side needs a second SPI controller (SPIM2) mapped to these four  pins with an SD-over-SPI slot on it — the same stack already proven on the
-  internal slot (''bringup/test_sd_cs17''). See the board devicetree and
+internal slot (''bringup/test_sd_cs17''). See the board devicetree and
-  ''HARDWARE.md'' in the firmware repo for the authoritative pin map.
+''HARDWARE.md'' in the firmware repo for the authoritative pin map.
 One thing to double-check against your physical board before crimping: the pin-1 orientation of P1 and J2 (silk dot/triangle) — the netlist gives pin
 numbers but not how the footprint is rotated on your board revision. A multimeter continuity check from J2.2/P1.3 to any GND point (e.g., USB shield)
 confirms you've got the orientation right before anything gets power.