hello i need help what is the best router to use in hotspot? because im a 4th year IT student and my project is wifi vendo machine (pay wifi) like piso net can anyone help me what is the best router to use? with thermal printer?

best router for hotspot is based on openwrt/LEDE. As youhave (almost) all possibilities of linux packages available. I.e. you can integrate
full featured caching proxy like squid. Or captive portal like coova-chilli.
miktotiks have similar functionalities, but closed and more limited. But are easier to set up for simple
scenarios.

Well, look this:
https://www.infinitel.es/productos/empr ... ger-web-en

maybe it will help you.

Hello can anyone help me with this project? or any suggestion? for our embedded project?

The concept of our project is based by the infamous “PISO NET” that most of us students used for internet surfing. For our project, you can only insert a Five Peso coin that is good for 20 mins or Ten Peso coin for 45 mins. The machine will give you a printed paper with a unique username and password in it. Then you will have to connect your phone or laptop to the wi-fi connection named “Coin-nect”. Next open your browser. Log in using the unique username and password. Once logged in you can enjoy the fast internet connection.

Mikrotik RB951Ui-2HnD 5 Port SOHO AP Router
Arduino Uno
Multi Coin Slot
LCD display
Thermal Printer
UTP Cable with RJ45 CAT5E