Stealing Joules From An Aluminium-Air Battery

While batteries are cheap and readily obtainable today, sometimes it’s still fun to mess around with their less-common manifestations. Experimenting with a few configurations, user [will.stevens] has assembled an aluminium-air battery and combined it with a joule thief to light an LED.

To build the air battery, soak an activated charcoal puck — from a water filter, for example — in salt-saturated water while you cut the base off an aluminium can. A circle of tissue paper — also saturated with the salt water — is pressed between the bare charcoal disk and the can, taking care not to rip the paper, and topped off with a penny and a bit of wire. Once clamped together, the reaction is able to power an LED via a simple joule thief.

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Intel’s Vision for Single Board Computers is to Have Better Vision

At the Bay Area Maker Faire last weekend, Intel was showing off a couple of sexy newcomers in the Single Board Computer (SBC) market. It’s easy to get trapped into thinking that SBCs are all about simple boards with a double-digit price tag like the Raspberry Pi. How can you compete with a $35 computer that has a huge market share and a gigantic community? You compete by appealing to a crowd not satisfied with these entry-level SBCs, and for that Intel appears to be targeting a much higher-end audience that needs computer vision along with the speed and horsepower to do something meaningful with it.

I caught up with Intel’s “Maker Czar”, Jay Melican, at Maker Faire Bay Area last weekend. A year ago, it was a Nintendo Power Glove controlled quadcopter that caught my eye. This year I only had eyes for the two new computing modules on offer, the Joule and the Euclid. They both focus on connecting powerful processors to high-resolution cameras and using a full-blown Linux operating system for the image processing. But it feels like the Joule is meant more for your average hardware hacker, and the Euclid for software engineers who are pointing their skills at robots but don’t want to get bogged down in first-principles of hardware. Before you rage about this in the comments, let me explain.

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Intel Releases The Tiny Joule Compute Module

At the keynote for the Intel Developers Forum, Intel CEO Brian Krzanich introduced the Intel Joule compute module, a ‘maker board’ targeted at Internet of Things developers. The high-end board in the lineup features a quad-core Intel Atom running at 2.4 GHz, 4GB of LPDDR4 RAM, 16GB of eMMC, 802.11ac, Bluetooth 4.1, USB 3.1, CSI and DSI interfaces, and multiple GPIO, I2C, and UART interfaces. According to the keynote, the Joule module will be useful for drones, robotics, and with support for Intel’s RealSense technology, it may find a use in VR and AR applications. The relevant specs can be found on the Intel News Fact Sheet (PDF).

This is not Intel’s first offering to the Internet of Things. A few years ago, Intel partnered up with Arduino (the Massimo one) to produce the Intel Galileo. This board featured the Intel Quark SoC, a 400MHz, 32-bit Intel Pentium ISA processor. It was x86 in an Arduino format. This was quickly followed by the Intel Edison based on the same Quark SoC, which was followed by the Intel Curie, found in the Arduino 101 and this year’s DEF CON badge.

We’ve seen plenty of Intel’s ‘maker’ and Internet of Things offerings, but we haven’t seen these platforms succeed. You could spend hundreds of thousands of dollars in market research to determine why these platforms haven’t seen much success, but the Hackaday comments will tell you the same thing for free: the documentation for these platforms is sparse, and nobody knows how to make these boards work.

Perhaps because of the failures of Intel’s IoT market, the Joule differs significantly from previous offerings. Although it can be easily compared to the Raspberry Pi, Beaglebone, and a hundred other tiny single board computers, the official literature for the Joule makes a comparison between it and the Nvidia Jetson easy. The Nvidia Jetson is a high-power, credit card-sized ‘supercomputer’ meant to be a building block for high-performance applications, such as drones and anything that requires video or a very fast processor. The Joule fits into this market splendidly, with demonstrated applications including augmented reality safety glasses for Airbus employees and highway patrol motorcycle helmet displays. Here, the Joule might just find a market. This might even be the main focus of the Joule – it can be integrated onto Gumstix carrier boards, providing a custom single board computer with configurable displays, connectors, and sensors.

The Intel Joule lineup consists of the Joule 570x and 550x, with the 550x being a bit slower, a Gig less RAM, and half as much storage. They will be available in Q4 2016 from Mouser, Newegg, and other Intel reseller partners.