I used a PID (proportional–integral–derivative) controller to regulate the temperature of my espresso maker. I wrote about it in my book, Made by Hand: My Adventures in the World of Do-It-Yourself. (You can read an except from the chapter on Gizmodo.)
PIDs are often used in Sous Vide cookers, too. (Here's how to make one). If you are looking for a reasonably priced PID controller, here's a new source: Brett Beauregard's open source PID controller, for $85.
Brett's pal, 3ric Johanson (author of Beam Weapon for Bad Bugs in Make Vol 23), says:
My friend Brett Beauregard has been working on this sweet open source PID controller.. and he’s finally published information online about it here.
A PID (proportional–integral–derivative) controller is a device which use hardware feedback with an algorithm; this allows the operator to maintain a target value (temp). Cruise control in car is the classic example: Set it at 60mph, and it will increase the accelerator until you hit 60. There are all sorts of things which can go wrong with closed-loop control systems – - overshoot, ringing, bias, etc. As this device is all open source, as it will make debugging these devices much easier.
It’s currently on “presale” for $85. I think this is a sweet deal. If you want to make your own Sous-vide cooker, this is the ticket. Go buy one, as I want to make sure this type of hardware is available to the masses. I’m excited to get mine.
Today a future without schools. Instead of gathering students into a room and teaching them, everybody learns on their own time, on tablets and guided by artificial intelligence. Flash Forward: RSS | iTunes | Twitter | Facebook | Web | Patreon | RedditIn this episode we talk to a computer scientist who developed an artificially […]
Where are our petabyte drives? Brian Hayes takes us through the reasons storage is “stuck” in the low terabytes. The tl;dr is that we got such exceptional capacity growth in the late 90s and early 00s we don’t need much more right now, so the focus since then has been on SSDs, networking, interfaces, etc, […]
Amélie Lamont, a former staffer at website-hosting startup Squarespace, writes that she often found herself disregarded and disrespected by her colleagues. One comment in particular, though, set her reeling — and came to exemplify her experiences there.
Having to pack and drag your stuff through security can put quite the damper on your vacation plans. Thankfully, we’ve got your back with one way to make traveling more painless: the Jumper Overnighter Travel Bag.This compact bag is so lightweight that you can effortlessly carry it, and fit it into any overhead compartment. But just […]
Learning is a 24/7/365 proposition, and it never ends. And if you’re truly serious about leveling up your skill sets and career prospects, get a subscription to Stone River Academy’s massive course collection. This offer normally is worth over $1,400, but is now available for just $89 in the Boing Boing Store.A respected name in information technology […]
Home audio has taken some big leaps forward in recent years–not just in terms of sound quality, but also in the style department. The FRESHeBAR Leather Soundbar, now 56% off in the Boing Boing Store, is proof.The FRESHeBAR comes packing almost all the options you’d ever need for a home sound system, including Bluetooth streaming capabilities.The unit’s 90 […]