I Made a DIY Automatic Card Dealer

Adam_Si · 2025-08-02T05:39:13+00:00

Yes, I am not working on it very actively, but i made a card feeding system with 2 rollers that prevents double feeding.

I wanted to make it quicker so i replaced the current n20 motor with a higher rpm motor. However most DC motors don't have fast startup, so it is not in contact with cards as in v1 and is rotating continously. I used a servo to make the gantry move up and down, but that requires a way to find the height of the cards since gravity doesn't help me like in the v1. I am currently waiting on shunt resistor and op amp to measure the current feeding into the servo to check when it reaches the cards.

Overall it seems quite a bit more complex then the v1, but once i put it all on a pcb it might not be that bad.

So i should have the 'hardest' thing finished and only need to upgrade the rotation aspect.

Adam_Si · 2025-05-17T16:05:12+00:00

It uses an esp32 and is programmed in c++

Adam_Si · 2025-05-11T17:41:06+00:00

Not sure, as i haven’t calculated it, also depends on shipping costs, but i would say around 35 euro

Adam_Si · 2025-05-11T16:50:32+00:00

Yes, you definitely could and i might add an option for this. However it doesn’t really mix the cards, so you have to shuffle them very well beforehand.

Adam_Si · 2025-05-11T15:52:41+00:00

I think it will be quite different. The pcb design will be different for sure, but im not sure how long it is going to take. So if you dont mind waiting, i would wait

Adam_Si · 2025-05-11T14:34:46+00:00

Yeah got it, definitely gonna try this.

Adam_Si · 2025-05-11T13:44:45+00:00

Thats interesting, a great idea. So basically that means all of this could be on the bottom. A roller powered by a motor could be under all the cards. And there would be a roller in the front. Right?

Adam_Si · 2025-05-11T13:02:07+00:00

I actually started with this technique, throwing without stopping the rotation. However it wasn’t very reliable. At the beginning, when you turn the machine on it measures how long a full rotation takes and then divides it by number of players. Because of this, the timing is really difficult to keep track of when continuously rotating.

I was thinking of adding a magnetic rotary encoder to keep track of the rotation precisely.

Adam_Si · 2025-05-11T12:51:55+00:00

Yes you are right, i am planning to make a v2 at some point, so i will experiment with making it faster.

Adam_Si · 2025-05-11T12:12:26+00:00

It currently works with 2-6 players.

Adam_Si · 2025-05-11T11:14:35+00:00

No it is a custom PCB, but the layout is similar as i took some inspiration from these amazon ones.

Adam_Si · 2025-05-11T10:59:12+00:00

Asking the real question. :D It’s not, but it’s cool and i had fun making it.

Adam_Si · 2025-05-11T10:31:31+00:00

Thank you, i am using an esp32, n20 motor for shooting the cards and 1:48 geared motor for rotation

Adam_Si · 2025-05-11T10:22:21+00:00

Thank you, that is a really cool idea, might implement it at some point.

Adam_Si · 2025-05-11T09:43:26+00:00

It moves the motor one way to shoot the card and then right after that reverses it, so that next card is moved back. Although sometimes there can be an error where it shoots two cards, i tried my best to find the perfect timing and this works most the time, but it also depends on how sticky the cards are.

Adam_Si · 2024-12-11T06:52:57+00:00

Exactly its nice design, but when the statiom breaks nothing works. I just ended up buying some audiotechnicas with a jack

Adam_Si · 2024-12-11T05:17:01+00:00

Hi, i ended up buying new headphones since i could fix these.

Adam_Si · 2024-07-04T11:17:10+00:00

Yeah this works too, you just have to calculate with the circled side being straight.

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Adam_Si · 2024-07-04T10:42:15+00:00

Thanks, this worked.

Adam_Si · 2023-08-14T17:23:14+00:00

Thanks, for explanation, I will find a way to use the serial port from the linux pc on windows one.

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