Wifi Vendo Machine

Introduction

Vending machines can dispense chips, chocolates, sodas, water,

coffee, and many more. We even had charging kiosk at malls and

convenient stores plus piso-internet machines for cheap PC rental.

This time around, why don’t we aim higher. All you need is Internet

Connection to start your Wi-Fi Business now! You read it right!

The machine is PLUG and PLAY!

Machine Features

Paperless - No printer needed. Using our new system, you will never have problems associated

with voucher-based systems such as paper jams.

Plug and Play - Our machine is designed as Plug and Play for Easy to installation.

40 Meters WiFi Signal Coverage - Our machine has built-in Tenda Router F3 designed for

heavy concurrent traffic.

Universal Coin Acceptor - It accepts all types of coins using a muticoin acceptor.

Up to 200 Users - The machine can give out approximately 4000+ ip address each day with /20

netmask.

Low Cost Maintenance - 10W power consumption.

Mode of Income

You can earn from the wifi vendo machine by selling your existing internet connection through a

multicoin acceptor. Each coin value corresponds to a specific time limit for the user. For

example, $1 = 5mins, $5 = 30 mins and $10 = 1 hour. You can modify the time limit through the

easy to use web portal. The time limit is unique to each customer/device (mobile phone, laptop,

tablet) and cannot be shared. The time limit can be pause/resume if the user cannot consume

them right away.

https://youtu.be/oNyNl_U1_BI

Another option is to sell vouchers. Users can insert coins and the voucher will be shown to their

phone.

Parts and Materials

12 Volts (1.5 or 2 Ampere) DC power supply

5 Volts single channel relay optocoupler (Brand: Songle or any brand with the below wiring)

1k resistor for the LED

Stranded wire for connections (gauge 18)

Bi-color LED or two separate LEDs (Red and Green)

- Red for “coin acceptor not ready” and Green for “coin acceptor ready”. By design, the vendor

machine will reject all coins if the user hasn't pressed the INSERT COIN button on his mobile

phone.

OR

CH-923 or JY 926 multi coin selector acceptor (can accept up to 6 kinds of coins)

- For more info go to https://www.aliexpress.com/item/CH-CH926-multi-coin-acceptor-for-

6-different-coins/547276307.html

- To calibrate your coin acceptor based on your local country’s coin types, follow this

video tutorial - https://www.youtube.com/watch?v=G_ubo3hjXhI

Raspberry Pi 3 Model B or B+ with official 5V 3A power supply

4GB (or higher) Micro SD Card - class 6 or 10 (important) with Micro SD Card Reader

- The micro SD card must be of high quality. Use Sandisk Ultra or Samsung Evo

Optional Parts

- By default, the raspberry pi has its own built-in wifi with coverage up to 10 meters. If you want

to extend it using an external router, you need to buy the following parts.

USB 3.0 to LAN adapter

-

- The USB will be connected to the raspberry pi while the output will be connected to a LAN

cable going to the extender router.

External router

- Any external router is acceptable. We normally use is Tenda F3 wall killer due to its cheap

price and good performance.

Exhaust fan (120 mm CPU cooling fan - any brand but we use Kingbao)

- In case you are placing your wifi vendo into a non-air conditioned or outdoor places, you can

add an exhaust fan to “blow out” the hot air from the inside of the box.

Assembly

Step 1: Software Installation

Needed softwares:

● Download and install Etcher to your computer.

● Download the wifi image - wifi_image.img

After downloading the needed softwares, we need to flash the installer into the micro SD card

using Etcher. To do so, unzip the contents of the wifi image in zip files.

Insert the micro SD card into the your computer using a card reader.

Open Etcher and click Select Image.

Then select wifi_vendo.img from the zip file.

Make sure to select your micro SD card

Click the Flash! button and wait for the process to finish.

NOTE:

If you encounter prompts about formatting your sd card, just click Cancel.

Step 2: Configure The Machine

IMPORTANT:

Make sure you do the following before turning on the raspberry:

● Insert the SD card into the raspberry sd slot.

● Insert the LAN cable into the LAN port of raspberry pi and make sure it is connected to

the modem/internet.

Turn on the raspberry pi and wait for the WiFi network to appear in the mobile gadget, it may

take a couple of minutes.

Connect to the wifi network using your laptop or smartphone. Once connected, open a browser

and go to http://10.0.0.1/admin

username:admin

Password:admin

Step 3: Connecting All Components

Connect all of the parts based on the below circuit diagram. Make sure to check the positive and

negative terminal of the 12V DC power supply for the coin acceptor to work properly.

Note: For the box enclosure, you can design it on your own based on your preference. We

usually use wooden box for easy installation then covers it with formica or paint it. You can also

put some stickers for the step-by-step user guide or your company name into it. In our case

we’re using the below dimension.

Flow

1. Turn on the wifi vendo machine.

2. The internet received by the raspberry pi through its LAN port will be shared to the USB

to LAN adaptor going to the router extender.

3. Users will then connect to the external router.

4. Once connected, their device (mobile phone, laptop, tablet) will open a web browser

automatically to the login page. User needs to press the INSERT COIN button then drop

the coins to the coin acceptor.

5. The coin acceptor will send the “pulse” signal to the raspberry pi which will save the

user’s device information and time limit. Users can now use the internet.