Hi everyone.. Can someone help me

Projects General Guidance
1

I woul like to create a project using arduino uno with 4 relay module. The senario is.
When arduino uno is on lcd display text shows "Light Control System! Delay count 20 seconds then shows anothere Text Promp Pleased Insert 25 Coins. And When inserted 25 coins The lcd screen shows how many coins inserted when25 coins done inserted anothe text promt push button to start task then when pushing the button is press 1st relay will triger upto 2mins while displaying running text "room light on" till the 2 minutes countdown end the 1st relay is off then the second relay is on then another 2 minutes countdown while displaying again running text kitchen light on. up to 4 relay same countdown with running text. Then if all relays done of their task the lcd screen will shows running Text Finished. When Text finish is show in lcd the lcd text is back to Welcom to Control system. can someone help me to build this project thank you in advanced...

2

That's not clear. You don't seem to pay much attention to instructions. For example you posted in a forum section that very clearly says "DO NOT POST IN THIS SECTION!!!"

I'll give you the benefit of the doubt and move your post for you.

You may wonder "why was a forum section created where no-one is allowed to post?". It's there to catch out those who don't pay attention to instructions.

3

Neither of those counts coins or display anything.
You have to add something to your hardware first. Then find power supply(s) that can power them all. Then post your wiring scheme and we can start...

4

That seems to indicate you have all the components on hand. How do you intend to power the project? Do you intend to build it on a breadboard or just wire from point to point? Do you know how to solder wires and do you also have the material to do that?

5

Really? What sort of application expects such patient users? Will the coins be of the same size and weight?

As you’ve already heard, many questions need answering before anyone can confidently give useful help.

6

yes sir i inow how to solder..

7

yes sir i had all the materials and i kbow how to aolder sir..

8

Make and post (here) a wiring diagram of the Arduino, Coin counter, four relays, button, LCD and power supply. Your power supply should supply the required power (volts and current) needed by the coin counter and the relays. You might need a buck converter to supply lower DC power to the Arduino. The LCD will probably use 5vdc from the Arduino.

9

Insert 25 coins please...

10

You need a big pocket!
Remembers me of tuble dryer at a camping that needed to be fed with 8 0.25 dollar coins every 15 minutes...
The camping was so large that you could not walk up and down to your tent site in 15 minutes...

11

yes sir i had already does materials.. i need someone to help how the code look like.
Thank you

12

Here's a start...

    +----------------------------------+
    |   +---|EXT|--------|USB|---+     |
    |   |    PWR          A5/SCL |     | +---------------+
    |   |                 A4/SDA |     | |    5VDC POWER |
    |   |          UNO      AREF |     +-| +      SUPPLY |
    |   |                    GND |---+-|-| -             |===C|= ~MAINS~
    |   | IOREF          SCK/D13 |   | | +---------------+
    |   | RST             DI/D12 |   | |
    |   | 3V3             DO/D11~|   | | +---------------+
    +---| +5V                D10~|   | | | COIN ACCEPTER |
        | GND                 D9~|   |-+-| +             |
        | GND                 D8 |   +---| -       D_OUT |
        | Vin                 D7 |   |   +---------------+
        |                     D6~|   |
        | A0                  D5~|   |        _
        | A1                  D4 |   |   +----|---+
        | A2             INT1/D3 |   +---|        |
        | A3             INT0/D2~|-------| BUTTON |
        | A4/DA  RS CK DI  TX>D1 |       +--------+
        | A5/CL  GD D0 5V  RX<D0 |
        +------------------------+
+---------+ +---------+ +---------+ +---------+ +-----+
| RELAY 1 | | RELAY 2 | | RELAY 3 | | RELAY 4 | | LCD |
| VCC  NC | | VCC  NC | | VCC  NC | | VCC  NC | +-----+
| SIG COM | | SIG COM | | SIG COM | | SIG COM | 
| GND  NO | | GND  NO | | GND  NO | | GND  NO | 
+---------+ +---------+ +---------+ +---------+
13
  • Last time I saw a schematic like that it was 1979 :astonished:
14

This was still common before the Internet era, when circuit diagrams were sent via RTTY.

15

  • The computers I worked on back then had their schematics drawn this way.

  • Spent many hours working on 33s too.

image
image3415×2268 619 KB

16

How do you think the code should be? You will probably write it entirely different from what I would write. What should it do and in what order? Start with the minimal amount and make sure it compiles without errors and then test that minimal code until it does only what you want. Then all some other functions to the code and more testing.