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Upgrading a Mini Slot Machine with an LCD & Microcontroller
I decided to take a mini keychain slot machine and give it a modern twist! In this project, I replaced the original mechanical internals with an LCD screen and a microcontroller, transforming it into a tech-enhanced version of itself.
In this video, I’ll walk you through the process of modifying the slot machine, including the components used, the challenges faced, and the final result. Whether you're into electronics, retro gadgets, or just enjoy creative mods, this is one you won’t want to miss!
Let me know what you think in the comments, and if you’ve ever done a similar project yourself!
00:00 Project summary and intro
00:51 Disassembly of original mini slot machine keychain
01:15 Replacement parts
02:59 Building breadboard circuit
04:50 Getting components to work with XIAO module in Arduino code
08:03 Showing slot machine symbols on LCD screen
12:05 Placing all components into the enclosure
18:20 Drilling holes
18:52 Showcase of finished project
Links in the video:
GitHub repository project:
https://github.com/marekl123/MiniSlotMachine
Seeed Studio XIAO wiki:
https://wiki.seeedstudio.com/getting_started_xiao_ra4m1/
Slot machine keychain:
https://www.aliexpress.com/item/1005006989916728.html
RA4M1 schematics:
https://files.seeedstudio.com/wiki/XIAO-R4AM1/res/XIAO-RA4M1_SCH_PDF_v1.0_240719.pdf
Battery charging circuit inside RA4M1
https://www.sg-micro.com/rect/assets/e95e555a-a8a2-4761-b86a-6554dff2d8ed/SGM40567.pdf
RGB-565 format:
https://en.wikipedia.org/wiki/List_of_monochrome_and_RGB_color_formats
RGB-565 color picker:
https://www.tricolors.org/rgb565/
Attribution icons:
https://www.flaticon.com/free-icons/slot-machine
Attribution music:
https://www.no-copyright-music.com/cinematic/
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By I decided to take a mini keychain slot machine and give it a modern twist! In this project, I replaced the original mechanical internals with an LCD screen and a microcontroller, transforming it into a tech-enhanced version of itself.
In this video, I’ll walk you through the process of modifying the slot machine, including the components used, the challenges faced, and the final result. Whether you're into electronics, retro gadgets, or just enjoy creative mods, this is one you won’t want to miss!
Let me know what you think in the comments, and if you’ve ever done a similar project yourself!
00:00 Project summary and intro
00:51 Disassembly of original mini slot machine keychain
01:15 Replacement parts
02:59 Building breadboard circuit
04:50 Getting components to work with XIAO module in Arduino code
08:03 Showing slot machine symbols on LCD screen
12:05 Placing all components into the enclosure
18:20 Drilling holes
18:52 Showcase of finished project
Links in the video:
GitHub repository project:
https://github.com/marekl123/MiniSlotMachine
Seeed Studio XIAO wiki:
https://wiki.seeedstudio.com/getting_started_xiao_ra4m1/
Slot machine keychain:
https://www.aliexpress.com/item/1005006989916728.html
RA4M1 schematics:
https://files.seeedstudio.com/wiki/XIAO-R4AM1/res/XIAO-RA4M1_SCH_PDF_v1.0_240719.pdf
Battery charging circuit inside RA4M1
https://www.sg-micro.com/rect/assets/e95e555a-a8a2-4761-b86a-6554dff2d8ed/SGM40567.pdf
RGB-565 format:
https://en.wikipedia.org/wiki/List_of_monochrome_and_RGB_color_formats
RGB-565 color picker:
https://www.tricolors.org/rgb565/
Attribution icons:
https://www.flaticon.com/free-icons/slot-machine
Attribution music:
https://www.no-copyright-music.com/cinematic/