‘tiny’ Power Supply Monitor

February 9, 2010 by Mike Szczys 13 Comments

[Manekinen] built a power supply monitor based around an AVR ATtiny13. Voltage and amperage are displayed on a 16×2 LCD character display (we’re not sure what the third number is… samples per second?). This is no small feat considering that the tiny13 is an 8-pin chip. He makes it happen by using the pins for both LCD control and ADC input. To make this happen the HD44780 compliant display is used in 4-bit mode. Check out the video after the break and hit up the non-translated page if you want to download the source code and PCB artwork. A note of warning, he’s using the RESET pin for I/O which means once you burn the fuses you’ll need a programmer that has High Voltage Serial Programming capabilities if you want to reprogram the chip. Continue reading “‘tiny’ Power Supply Monitor” →

GuruPlug, The Next Generation Of SheevaPlug

February 8, 2010 by Mike Szczys 50 Comments

Meet GuruPlug, an all-in-one server that is now available for pre-order. This is the next generation of the popular SheevaPlug that features some added goodies. The base model sells for the same $99 and appears to have the same specs as the original but for $30 more, the GuruPlug Server PLUS moves to 2 Gigabit Ethernet ports, one eSATA connector, and built-in WiFi and Bluetooth. All of this for $129 and it only pulls 5 watts? Wow.

Update: Thanks to [Foerdi] and to [Phil Burgess] for the pointing out that the hardware diagram on the features page shows WiFi and Bluetooth for both models.

[Thanks Chris]

Ez430 Home Automation

February 8, 2010 by Mike Szczys 12 Comments

[Oliver] has been doing some work to use his TI ez430 Chronos wristwatch for some home automation. He’s working with a RF controllable lightbulb adapter which operates in the 433 MHz band. A dirt-cheap breadboard-friendly transmitter is available from Seeed Studios and he uses this in conjunction with a computer and an Arduino. Before the trolls get to their thing, YES, this is incredible overkill. But remember that he’s prototyping. We hope that if he intends to actually use this setup he’ll migrate to something like an ATtiny2313 running V-USB. Better yet, you should be able to tap into the watch’s companion receiver and cut the computer out completely.

If you’re easily amused you’ll appreciate the video of a light turning on and off after the break. If you’re a little harder to please then take a look at Oliver’s methods of using Python processing for the watch’s data.

Ok, now we’ve seen this watch turning on lights and unlocking doors. What else ‘ya got?

Built-in Hex Editor Unlocks Plasma TV Features

February 8, 2010 by Mike Szczys 79 Comments

[Nick] tipped us off about a guide to unlock extra features on Panasonic televisions. The hack works on the G10 models of plasma TVs and uses the service menu to gain access to the EEPROM memory. With a few quick steps you can change some data with a built in hex editor, unlocking several new settings menus, or bricking your entertainment centerpiece. We’ve seen some Samsung TV hacking in the past and hope that with increased processing power in today’s models we’ll someday see consumer TVs available with open-source firmware so that we can integrate of our favorite entertainment software.

FAT Support For Any Microcontroller

February 7, 2010 by Mike Szczys 24 Comments

[Rahul Sapre] sent us a guide to porting EFSL to any microcontroller (PDF). The Embedded Filesystems Library adds FAT support to C compiled microcontrollers. It is targeted at the AVR line of chips but can be adapted to any architecture that works with a C compiler. [Rahul’s] guide will take you through the process of adapting the latest stable 0.2.8 version to new hardware by using a PIC uC as the working example. The non-stable development branch of EFSL is working toward multiple-platform support so consider lending a hand if this interests you.

Hackaday Links: February 7, 2010

February 7, 2010 by Mike Szczys 14 Comments

Bot gives head to passersby

This free range robot was spotted at this year’s Kinetica Art Fair. You can place your hand above it and it will stop and pour you a beer. That’s if you consider 7/8 of a glass of head ‘a beer’.

Photo booth adds fun – consumes floor space

Face it, photo booths are fun, and if they’re free a lot of people will use them. This particular booth was built in some guy’s apartment, adding the fun but eating up floor space. But this would be a great build for your next group gathering, just like the Crushtoberfest. [via DVICE]

More human through-hole design

[Fridgehead] stuck and 5mm LED in his earlobe and then used a microcontroller to make it pulse. He’s got quite a mop and that’s where he hides the black controller pack. The next version should be RGB and the smallest surface mount packages he can solder. At least this isn’t disgusting like the LED nipple ring.

Chandelier your wife will never let you install

This 300 LED chandelier uses epoxy coated wires draped around the light ring to resemble a more traditional crystal light fixture. It’ll still be a hard sell if you want to hang this over the dinner table. [via Gizmodo]

A touch of copper

[Zombie84] built a prototype of a robot arm out of copper pipe. There’s not much info here, but you can see some wires in the wrist that appear to function as tendons. This reminds us of the characters from 9.

Putting On A Show In The Rain

February 7, 2010 by Mike Szczys 12 Comments

Let’s face it, walking around in the rain sucks. [Matth3w] is trying to add a little whimsy to an unpleasant experience by adding an LED matrix to his umbrella. The array contains 80 LEDs that are individually addressable. This is a mutiplexed array that relies on a MIC2981 source driver for the eight rows (or rings in this case), with the ten columns handled by the Arduino. The effect is quite nice as you can see in the video after the break. Now that he’s proven this works, you might want to etch your own PCB in order to get rid of the Arduino board and prototyping shield, making it easier to waterproof the control circuitry. This would make a nice addition to your illuminated umbrella stock.

Continue reading “Putting On A Show In The Rain” →