diff --git a/hal.py b/hal.py
index 9c67b89..450d32e 100644
--- a/hal.py
+++ b/hal.py
@@ -1,6 +1,7 @@
 from utime import sleep_us
 from machine import Pin, PWM, ADC, time_pulse_us
 
+# add your WiFi SSID and password
 WIFIS = dict({
 "": ""})