An opened plastic project box with electronics inside

Smoking Meat Finds Natural Home In The Cloud

Did you know that backyard barbecues now come with WiFi? It should be no surprise, given the pervasiveness of cloud-enabled appliances throughout the home. However [Carl] wasn’t ready to part with his reliable but oh-so-analog BBQ smoker, so instead he created an affordable WiFi-based temperature monitor that rivals its commercial counterparts.

Accurate temperature measurement is essential to smoking meat from both a taste and safety standpoint. In this project, two Maverick ET-732/733 thermistor probes take care of the actual temperature monitoring. One probe is skewered into meat itself, and the other measures the ambient ‘pit’ temperature. Combined, these two gauges ensure that the meat is smoked for exactly the right length of time. [Carl] mentions that adding an extra temperature sensor is trivial for larger setups, but he’s getting by just fine with two data points.

Naturally an ESP8266 does most of the heavy lifting in bridging the gap between smoke and cloud. At the core of this project is utility and practicality – temperature statistics can be viewed on any device with a web browser. Being able to study the temperature trends in this way also makes it easier to predict cooking times. Electronic alerts are also used to notify the chef if the temperature is too hot or cold (among other things). The entire contraption is housed in a smart looking project box that contains an LCD and rotary encoder for configuration.

If this has piqued your culinary interest, check out the extensive documentation recipe over on GitHub and the project Wiki.  We also recommend checking out this project that takes automated meat smoking to the next level.

Unorthodox Toolbox Switcheroo: Barbecue!

Despite all the progress in cooking methods over the past millennia, nothing can ever replace the primeval sensation of staring into the embers as your food slowly gets ready. Barbecues are the obvious choice to satisfy this cave nostalgia, and while size might matter in some cases, sometimes you just want the convenience of being able to take your grilling device to the beach, park, or just really anywhere but home. Other times you’re [Laura Kampf] and don’t want to use an old toolbox for storing tools.

It all started with one of those typical three-layer folded cantilever toolboxes that [Laura] really likes for their mechanical construction, but not so much from a usability point of view. Being someone with a knack for turning random stuff into barbecues, this was an intriguing enough device to take apart. After plenty of time spent grinding bolts and paint off, she cut out the tray bottoms to weld metal mesh pieces as grill grates in their place — but you can watch the whole progress in the video below then.

The folding mechanics play out really nicely here. Not only can you access the grill goods by moving them away from the burning coals that are placed in the center bottom part of the box, it also provides you with two different heat layers. The individual lids on each side add even more variety, and this might even work as portable little smoker.

We’ve seen [Laura]’s work a few times before already, and in case you haven’t, go check out her beer keg motorcycle side car, wheelbarrow bicycle trailer, or Zippo lighter turned drill bit storage box.

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Finally, A Piano BBQ Grill That You Can Drive Around The Workshop

It’s a truth universally acknowledged that sometimes a little music can add much to a nice afternoon picnic. It’s also well-known that meat cooked over hot coals should be turned regularly to allow for even cooking. This barbecue grille project from [Handy Geng] delivers on both counts.

The project uses a full 88 motors, activated by pressing keys on an electronic piano. The technique used is simple; rather than interface with the keyboard electronically or over MIDI, instead, a microswitch is installed under each individual key.

Thus, when the piano keys are pressed, the corresponding motors are switched on. Each motor turns a skewer loaded with meat, sitting above a box of hot coals. Thus, playing the piano turns the meat, allowing it to be cooked on all sides without burning.

As a further bonus, the entire piano barbecue grille is also motorized, allowing [Handy Geng] to do laps around his workshop while playing the piano and cooking up lunch. It’s a great way to cook up some grilled kebabs while simultaneously entertaining one’s guests.

We’ve seen some other fun grill hacks too – even robotic ones! Video after the break.

Continue reading “Finally, A Piano BBQ Grill That You Can Drive Around The Workshop”

Hackaday Prize Entry: The Internet Of Meat

We’ve only just begun to see the proliferation of smart kitchen gadgets. Dumb crock pots with the intelligence of a bimetallic strip, are being replaced by smart sous vide controllers. The next obvious step is barbecue. For his Hackaday Prize entry, [armin] is building a smart, eight-channel BBQ controller for real barbecue, with smoke and fans, vents and metal boxes.

This BBQ controller has been in the works for years now, starting with a thread in a German barbeque forum. The original build featured an original Raspberry Pi, and could relay temperatures from inside a slab of meat to anywhere with range of a WiFi network.

For his Hackaday Prize entry, [armin] is working on a vastly improved version. The new version supports eight temperature probes, temperature logging and plotting, a webcam, setting alarms, a web interface, 433MHz radio, and PWM and fan control. Yes, if you’re very, very clever you can use this project to build a barbeque that will cycle a fan, and open and close a damper while monitoring the temperature of a brisket and email you when it’s done. It’s the Internet of Meat, and it’s the most glorious thing we’ve seen yet.

BBQ Thermometers Get Serious

You can write with a fifty cent disposable pen. Or you can write with a $350 Montblanc. The words are the same, but many people will tell you there is something different about the Montblanc. Maybe that’s how [armin] feels about meat thermometers. His version uses a Raspberry Pi and has a lengthy feature list:

  • 8 Channel data logging
  • Plotting
  • Webcam (USB or Raspicam)
  • Alarms via a local beeper, Web, WhatsApp, or e-mail
  • Temperature and fan control using a PID
  • LCD display

You can even use a Pi Zero for a light version. There’s plenty of information on Hackaday.io, although the full details are only in German for the moment. As you can see in the video below, this isn’t your dollar store meat thermometer.

Even though a disposable pen does the same job as a Montblanc, most of us would rather have a Montblanc (although Hackday would have to hand out some pretty steep raises before we start using the Meisterstück Solitaire Blue Hour Skeleton 149).

We might have done more with an ESP8266 and then done more work on the client, but we have to admit, this is one feature-packed thermometer. We’ve seen simpler ones that use Bluetooth before, along with some hacks of commercial units.

Continue reading “BBQ Thermometers Get Serious”

Reverse-Engineering A Wireless BBQ Thermometer

[Bob] has his own smoker and loves to barbecue, but doesn’t like spending all day checking on his smoker’s temperature. He thought about building his own wireless thermometer setup, which would have been pretty awesome, but then he had a better idea: why not hack an existing wireless barbecue thermometer? [Bob] purchased an off-the-shelf wireless BBQ thermometer and reverse-engineered its wireless protocol to make his own wireless thermometer setup.

The first problem [Bob] encountered was figuring out the frequency of the transmitter. Thankfully [Bob] had access to a spectrum analyzer, where he discovered the transmitter was running at 433.92MHz (a cheap RTL-SDR dongle would also get the job done). Next, [Bob] started digging into the manufacturer’s FCC filings and found that it actually called out the transmit frequency, which matched the transmit frequency he measured. He also found a ton of other helpful information in the filing, like a block diagram and full transmitter schematic.

[Bob] used a Radiometrix RF module to receive the thermometer’s signal. He hooked up the output to his logic analyzer to start decoding the protocol. After a quick visual analysis, [Bob] found that the signal was a preamble followed 13 bytes of Manchester-encoded data being transmitted at 2kbps. He started collecting data with known temperatures, created a table of the data, and began looking for patterns. After quite a bit of searching [Bob] was successfully able to find and parse the temperature values out of the data stream. [Bob] did a great job of documenting his process and results, so check out his writeup if you want to try it out yourself.

Custom Heaters For A DIY BBQ Smoker

Spring is in the air, and with that comes savory meals cooked over the course of dozens of hours. While preparing for your yearly allotment of pork and beef, check out [Brett Beauregard]’s custom heater elements he built for a DIY wood smoker.

This build follows the very successful smoker [Brett] built last year. This year, he’s using the same toaster oven heating elements, only cut down to make the heater smaller and more efficient. Basically, [Brett] is making a small cartridge heater out of the equipment he already has.

After cutting the toaster oven heating elements to length, [Brett] reamed out the ends to expose the nichrome wire. A short hit with a TIG welder bonded the lead to the heating element. Insulated with furnace cement, [Brett] had a custom heater perfect for charring chunks of mesquite or hickory.

Meat smokers aren’t very complicated – they can be built with a flowerpot and a hotplate, and will still cook up a delicious dinner. We might have to borrow [Brett]’s technique when we build this year’s smoker.