From f8d3d097169ee1afe94253601805e3ebe32b2940 Mon Sep 17 00:00:00 2001
From: Martin Preuss <martin@aquamaniac.de>
Date: Sat, 17 May 2025 10:51:21 +0200
Subject: [PATCH] n21: fixed README.

---
 avr/devices/n21/README | 1 +
 1 file changed, 1 insertion(+)

diff --git a/avr/devices/n21/README b/avr/devices/n21/README
index 98c2591..55a3d2c 100644
--- a/avr/devices/n21/README
+++ b/avr/devices/n21/README
@@ -5,6 +5,7 @@ N21
 - Role: Door sensor with temp and motion detection
 - MCU: AtTiny84
 - Connection: RJ45
+- Predecessor: N16
 - Periphery:
   - PIR sensor (AMN31112)
   - door sensor (TCRT1000)