From 13d6b3904954f19cde5e453dc9234bf4cdbb31cd Mon Sep 17 00:00:00 2001
From: "victor.fraile" <victor.fraile@mesavault.es>
Date: Wed, 25 Mar 2026 15:47:49 +0000
Subject: [PATCH] =?UTF-8?q?A=C3=B1adir=20lsn50-v2-xkc-y25-v-drainage/docs/?=
 =?UTF-8?q?wiring.md?=
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+# Wiring
+
+## Componentes
+
+- `Dragino LSN50 v2.x`
+- `XKC-Y25-V`
+- resistencia `47k`
+- diodo `1N4148`
+
+## Conexiones validadas
+
+### Alimentación del sensor
+- `XKC VCC` -> `LSN50 pin 14 (+5V)`
+- `XKC GND` -> `LSN50 pin 15 (GND)`
+
+### Señal
+- `XKC OUT` -> cátodo del diodo
+- ánodo del diodo -> `LSN50 pin 24 (PA12)`
+
+### Pull-up
+- resistencia `47k` entre:
+  - `LSN50 pin 24 (PA12)`
+  - `LSN50 pin 13 (VDD)`
+
+## Pinout relevante fijado
+
+### Regleta derecha
+- pin `14` -> `+5V`
+- pin `15` -> `GND`
+- pin `24` -> `PA12`
+- pin `25` -> `NRST` (no usado)
+
+### Regleta izquierda
+- pin `1` -> `VDD`
+- pin `12` -> `GND`
+- pin `13` -> `VDD`
+
+## Notas
+
+- No conectar `OUT` del XKC directamente a `PA12`.
+- No asumir que el `+5V` es permanente.
+- El rail de `+5V` está gobernado por ventana `5VT`.
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