High Speed DIY M&M Sorting Machine Uses iPhone Brain

HughPickens.com writes: Canoe Tech reports that M&M sorting machines are a popular project for people who like combining electronics, programming and machine building. Most of them send a single M&M down a chute to a simple color sensor where the color sensor will then take a second or two to figure out the color. A servo motor will then rotate a chute that will direct the M&M into the correct pot. But a new project created by the nameless blogger behind the reviewmylife blog that uses an iPhone 5s as its brain is capable of sensing different colors and so can "sort" the M&Ms as they fall past. The iPhone communicates the information via Bluetooth to an Arduino board, which in turn fires off the correct electro magnet controlled gate. One practical application of the sorter could be creating a bowl of M&Ms — with all the brown ones removed.

Comments

Perler Bead Sorting?

[Jason Levine]

This makes me wonder if it would be possible to build a machine to sort perler beads. For those who don't know, these are small (under 5mm) plastic beads. You place them on a tray to make a design (Doctor Who, One-up mushroom from Super Mario Brothers, etc), then iron the beads so they melt and fuse. It's an inexpensive (relatively speaking) craft that can be really fun because of the wide range of design possibilities.

The major problem is that the cheapest way to get beads is by the tub. This is - as you might expect - a tub of various colors of beads... all mixed together. Want a black bead? You need to hunt through the tub to find one. Or you can do what we do and manually sort through thousands of beads and group similar colors together in another container.

The M&M sorting machine makes me wonder if you could make a machine that would sort the beads. You could even simplify it and only match a specific color bead. Incoming beads would either be sent to the "matching" tray or would go to the "doesn't match" pile. (The latter could be resorted to match another color, repeating until no beads were left.)

Anyone into robotics know how much a DIY project like this would cost and what level of expertise this would require? This might be an interesting project to tackle with my older son who is in his middle school Lego Robotics team.