Scheduled Wake on LAN (WoL) via crontab on Mango router

I wanted my pc to boot up each workday at 08:50, so decided to use my Mango router as it's already on the network and runs OpenWRT.

1. Install etherwake via: http://<mango-IP>/cgi-bin/luci/admin/system/opkg
   
   
2. Use: https://crontab.guru/#50_8_*_*_1-5 to find the crontab timing.
   
   
3. SSH to the Mango router and run the following command to find the name of your LAN interface that can see the target PC.
   IP a
   
   
4. In http://<mango-IP>/cgi-bin/luci/admin/system/crontab add the following line.
   50 8 * * 1-5 etherwake -b -i br-lan <MAC address of target PC>