ATLANTIC CITY, N.J. — Slot machines, the bread and butter of the casino industry, long ago lost their nicknames as “one-armed bandits” when manufacturers did away with the lever gamblers had. Arduino boards running GRBL software have long been used for CNC machine control, but usually you need to choose between having a router or laser cutter. This project, however, is specifically designed to accommodate both with a modular carriage system. Internet Arduino Controlled T-Slot XY Table: This is a ridiculously easy (in terms of power tool use - see below) way to make a lower precision XY Table. With the wide availability of T-Slot extrusions on Amazon and Ebay, and using simple home improvement store hardware, this is a great way t. Control and Monitoring. The secret of flood and drain is in starting and stopping the irrigation pump. The advice I received was 'On for 2 hours, Off for 15 minutes, and repeat'. Most mains timers don't have either the granularity, or the number of program slots we would need so I created my own.

One of the most common complaints fielded by the agents of Big Candy regards the non-homogenous nature of their products. Skittles and M&Ms are two egregious offenders in this area, and it’s left up to the determined consumer to handle sorting these candies themselves. Of course, you can always do it by hand, but as we all know – machines will do the work.

This Skittle sorter is the creation of [Lewis] of [DIY Machines], and it’s a build targeted at the beginner level. Constructed out of cardboard, it uses a pair of servos to handle the transport of the candies into their requisite colored bins, via a rotating disc and chute. Skittles are scanned with a TCS34725 color scanner hooked up to an Arduino Nano, which changes the angle of the output chute to dump the candy in the proper location. The hopper is able to handle a standard 180 gram bag of Skittles without problems.

[Lewis] does a great job explaining each stage of the build, from the mechanical and electronic side of things, to the required calibrations to make everything play together nicely. The project teaches builders a multiude of useful lessons, like how to use limit switches and other concepts of automation. We’ve featured [Lewis] on these pages before, too; his stylish shelf clock is a particular delight. Video after the break.

Arduino Controlled Slot Machines

Arduino boards running GRBL software have long been used for CNC machine control, but usually you need to choose between having a router or laser cutter. This project, however, is specifically designed to accommodate both with a modular carriage system.

Build-wise, it’s a fairly standard XYZ gantry CNC — with a frame made out of V-slot aluminum extrusions from OpenBuilds cut to length by a circular saw. The X and Y axes are controlled via NEMA 17 stepper motor and belt drive assemblies, while height adjustment is accomplished with a NEMA 23 motor and screw drive.

The electronics are all hidden away in a separate enclosure, including the Arduino Uno/CNC shield that serves as the brains of the operation and a cooling fan to keep the temperature inside in check.

Arduino Controlled Slot Machine Troubleshooting

If you’ve been considering doing this type of build, this looks like a great place to start, and you can see a demos of it in laser and spindle modes in the videos below.

Arduino Controlled Slot Machine Schematics

Arduino Controlled Slot Machine Jackpots