diff --git a/README.md b/README.md
index be3479a..0c52307 100644
--- a/README.md
+++ b/README.md
@@ -2,5 +2,7 @@ Service File can be found at /lib/systemd/system on Pi
 
 DHT11 temp Sensor guide: https://www.freva.com/dht11-temperature-and-humidity-sensor-on-raspberry-pi/
 
+Find an accurate broadcom pinout here
+https://www.etechnophiles.com/raspberry-pi-3-b-pinout-with-gpio-functions-schematic-and-specs-in-detail/