SelfOrdering Machine for Canteen (SELFO) In this paper, we proposed a selfordering machine for canteen named SELFO. Nowadays, the ordering system in canteen requires a lot of cash for change money, a tiresome daily manual recapitulation, and order forms that require sellers to spend extra money. Therefore, we proposed a machine as a solution to those problems. This machine can eliminate the need of change money, do automatic recapitulation and reduce the cost of order forms. Customers can order menu using an interactive menu in this machine, pay using a contact card, and wait for the order to be delivered, while recapitulation data is stored directly in the database. The hardware Machine designed using Raspberry Pi 3B, touchscreen LCD 10.1xe2x80x9d, thermal printer, and the card reader that we made based on ATMEGA 328P. While the software program is based on python.

Hardware Design of Transaction Device based on Contact and Contactless Smart Card In this paper, we design and implement the transaction device based on two operation methods, i.e., with contact and without contact with smart cards. The system can be divided into three parts: hardware (transaction device), software (transaction application), and server. In this work, we focus on the hardware design that comprises smart card reader hardware, LCD display  touch panel, and battery charger circuit. ATMEGA 328P was chosen as a data exchange controller between the smart card and smart card reader. In contrast, the Raspberry Pi 3 Model B (singleboard computer) was utilized as an application processor due to several features offered, such as IO, graph processing unit, and enough memory. Our electronic transaction device can be connected to the thermal printer. Therefore, the transactions report (e.g., Topup, balance check, payment activity, and so on) can be printed out. The developed device has a tiny dimension and lightweight to carry, hence it can be categorized as a portable device (easily moved everywhere).