Game Tin: Handheld Games with no Batteries

A breakdown of the various parts of the Game Tin

Anyone who grew up with a Game Boy knows how well they sucked through AA batteries. [Nick]‘s Game Tin console solves this problem by running of an ultracapacitor charged by solar power.

The console is based on a EFM32 microcontroller: an ARM device designed for low power applications. The 128×128 pixel monochrome memory display provides low-fi graphics while maintaining low power consumption.

There’s two solar cells and a BQ25570 energy harvesting IC to charge the ultracap. This chip takes care of maximum power point tracking to get the most out of the solar cells. If it’s dark out, the device can be charged in about 30 seconds by connecting USB power.

The 10 F Maxwell ultracapacitor can run a game on the device for 1.5 hours without sunlight, and the device runs indefinitely in the sun. Thanks to the memory display, applications that have lower refresh rates will have much lower power consumption.

The Game Tin is open source, and is being developed using KiCad. You can grab all the EDA files from Bitbucket. [Nick] is also gauging interest in the Game Tin, and hopes to release it as a kit.

Introducing USB Armory, a Flash Drive Sized Computer

usb armory

[Andrea] tipped us about USB armory, a tiny embedded platform meant for security projects. It is based on the 800MHz ARM Cortex-A8 Freescale i.MX53 together with 512MB of DDR3 SDRAM, includes a microSD card slot, a 5-pin breakout header with GPIOs/UART, a customizable LED and is powered through USB.

This particular processor supports a few advanced security features such as secure boot and ARM TrustZone. The secure boot feature allow users to fuse verification keys that ensure only trusted firmware can be executed on the board, while the ARM TrustZone enforces domain separation between a “secure” and a “normal” world down to a memory and peripheral level. This enables many projects such as electronic wallets, authentication tokens and password managers.

The complete design is open hardware and all its files may be downloaded from the official GitHub repository. The target price for the final design of the first revision is around €100.

Energia on the CC3200

The CC3200 dev board with Energia

If you’re looking to connect things to the internet, with the goal of building some sort of “Internet of Things,” the new CC3200 chip from TI is an interesting option. Now you can get started quickly with the Energia development environment for the CC3200.

We discussed the CC3200 previously on Hackaday. The chip gives you an ARM Cortex M4 processor with a built-in WiFi stack and radio. It supports things like web servers and SSL out of the box.

Energia is an Arduino-like development environment for TI chips. It makes writing firmware for these devices easier, since a lot of the work is already done. The collection of libraries aids in getting prototypes running quickly. You can even debug Energia sketches using TI’s fully featured IDE.

With this new release of Energia, the existing Energia WiFi library supports the built-in WiFi radio on the CC3200. This should make prototyping of WiFi devices easier, and cheaper since the CC3200 Launchpad retails for $30.

Foosball Now Part of the Internet of Things

internet of things foosball

At a local LAN event, [Thomas] wanted a way to easily show off the capabilities from some of the Internet-of-Things devices everyone keeps talking about. His idea was to build an internet-connected foosball/table soccer/table football table to show off some hardware and software.

[Thomas]‘s table automates almost everything that is part of the great sport of foosball. Once a user logs in using the barcode scanner, the game begins by deploying the tiny ball with parts salvaged from a Roomba. The table uses infrared sensors to detect the ball. Once a goal is scored, it is posted online where anyone can see the current score and a history of all of the games played on the table.

There are a few other unique touches on the foosball table, such as the LED lighting, touch screen displays, and an STM32-E407 ARM processor to tie the whole machine together.

For more information including the source code and demonstrations, check out [Thomas]‘s project blog. And, if you get lonely, perhaps you can try the robot foosball player!

Playing StarCraft On An ARM

Starcraft

Except for the really terrible Nintendo 64 port, StarCraft has always been bound to desktop and laptop PCs. Blizzard could take the code for StarCraft, port it to an ARM platform, put a version on the Google Play an iTunes store, and sit there while the cash rolls in. This would mean a ton of developer time, though, and potentially years tracking down hard to find bugs.

Or one random dude on the Internet could port StarCraft to an ARM platform. Yes, this means all the zerg rushes and dark templar ambushes you could possibly want are available for tablets and Raspberry Pis.

This godlike demonstration of compiler wizardry is a months-long project of [notaz] over on the OpenPandora team. Without the source for StarCraft, [notaz] was forced to disassemble the Win32 version of the game, convert the disassembly to C with some custom tools, and recompile it for ARM while linking in all the necessary Win32 API calls from the ARM port of Wine. Saying this was not easy is an understatement.

If you have an OpenPandora and want to relive your heady days of youth, you can grab everything you need here. For anyone without an OpenPandora that wants to play StarCraft on a Raspi, you might want to get working on your own recompiled port. Video below.

[Read more...]

A Real Raspberry Pi Clone (Not ‘Inspired By’)

odroid A few years ago, Broadcom had a pretty nice chip – the BCM2835 – that could do 1080 video, had fairly powerful graphics performance, run a *nix at a good click, and was fairly cheap. A Broadcom employee thought, “why don’t we build an educational computer with this” and the Raspberry Pi was born. Since then, Broadcom has kept that chip to themselves, funneling all of them into what has become a very vibrant platform for education, tinkering, and any other project that could use a small Linux board. Recently, Broadcom has started to sell the BCM2835 to anyone who has the cash and from the looks of it, real Raspberry Pi clones are starting to make their way into the marketplace.

Other Raspberry Pi clone boards out there like the Banana Pi and the HummingBoard don’t use the same BCM2835 found in the Raspi and the new Odroid. The new board also has the same 26 pin GPIO expansion socket, and runs the same binaries as the Raspberry P;. It is a clone in every sense, with a slightly different form factor geared towards very tiny, portable, and battery-powered use cases.

Unlike the official Raspberry Pi Compute Module, the Odroid isn’t meant to be used as a system on module, shoved into any product that needs a fast-ish ARM core without needing engineers to actually design a circuit with an ARM. The Odroid is a cut-down, extremely minimalist version of the Raspi, perfect for any project where space is at a premium.

There are a few interesting features included on the Odroid: there’s an on-board battery connector, a real-time clock on the board, and more of the BCM2835 GPIOs are exposed (although not the same ones as the upgraded RPi Model B+). There’s no Ethernet, but odds are if you’re building something that’s battery-powered, you won’t need that anyway.

As far as price goes, you can pick one of these Odroids up for $30 USD, with $9 shipping from South Korea. That’s pretty comparable to the price of a real Raspberry Pi, but if the features in the Odroid are worth it to you, it might be a worthwhile clone.

An Amazing DIY Single Board ARM Computer with BGA

DIY Single Board Computer ARM

Typically, you buy a single board Linux computer. [Henrik] had a better idea, build his own ARM based single board computer! How did he do it? By not being scared of ball grid array (BGA) ARM processors.

Everyone loves the Raspberry Pi and Beagle Board, but what is the fun in buying something that you can build? We have a hunch that most of our readers stay clear of BGA chips, and for good reason. Arguably, one of the most important aspects of [Henrik's] post is that you can easily solder BGAs with cheaply available tools. OSH Park provides the inexpensive high-quality PCBs, OSH Stencils provides the inexpensive stencils, and any toaster oven allows you to solder even the most difficult of components. Not only does he go over the PCB build, he also discusses the bootloader, u-boot, and how to get Linux running.

Everything worked out very well for [Henrik]. It’s a good thing too, cause we sure wouldn’t want to debug a PCB as complicated as this one. What projects have you built that use a BGA? Let us know how it went!

Follow

Get every new post delivered to your Inbox.

Join 96,478 other followers