**Serial Coinslot**

Serial coinslot uses Arduino as the controller for coin acceptor credits, (lcd display, and keypad E-loading)*//optional//. The data is transmitted via USB serial. Just connect the usb chord(//shipped with your arduino//) to your main vendo (**Raspberry Pi**, **Orange Pi**, **Newifi D2 with USB Hub**, or **x64 Ubuntu Server**)

====== Installation Guide ======
  - **[[serial_coinslot#flash_arduino| Flash Arduino Firmware]]**
  - **[[serial_coinslot#wiring_diagram| Wiring Diagram]]**
  - **[[serial_coinslot#payment_portal_settings| Payment Portal Settings]]**



===== 1. Flash Arduino =====
** Two ways to flash arduino**
  - **[[arduino_serial_flashing_using_phone| Using Android Phone with OTG support]]**
  - **[[arduino_serial_flashing_using_pc| Using PC]]**




===== 2. Wiring Diagram =====


Materials Needed:
  - Arduino Uno or any arduino with equal or higher memory capacity than uno
  - Universal Coin Acceptor
Optional parts for E-loading (Keypad+lcd) setup:
  - 4×3 Membrane Keypad Module (//Optional, only if E-loading is enabled//)
  - ST7920 128x64 LCD Display Module (//Optional//)
  - Bill Acceptor (//Optional//)


{{ :4.0.0-beta.1:ado-serial.pdf | Download Diagram}}
{{ :4.0.0-beta.1:ado-serial-1.png?direct |}}


**NOTE:** LCD and keypad are just optional. 
===== 3. Payment Portal Settings =====

Go to **Sales** -> **Payment Portals** page.

Add **Built-in / Wired** Coinslot and follow the following settings:

{{:screen_shot_2020-11-29_at_9.47.34_pm.png?nolink|}}