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28 Jan 2008


In this article Randall Bohn converts the Liberlab microcontroller project software so that the Arduino platform can take advantage of the great Liberlab software and experiment platform. We mentioned Liberlab here at uChobby in a recent article.

Liberlab is an excellent lab tool for learning about analog and digital control. With a programmed microcontroller and the supplied open source software you can easily make analog measurements, detect and control digital signals and even automate control functions. All this without learning to program! It truly is a great setup for teaching and simple control projects.

Arduino + Liberlab = Liberino – [Link]

27 Jan 2008


Ian at DIY Life made a nice tutorial video on RGB color mixing with LEDs on the PIC platform. His circuit throws in a handful of extras, like mic input. While perhaps simpler to do on the Arduino with a BlinkM, this project looks like a good PIC starter. His whiteboard circuit diagram drawing lapse is pretty neat, too.

PIC USB color changing light – [Link]

27 Jan 2008


If you need an UV LED timer, or a timer for any other purpose you may be interested in the UV LED Controller that was constructed using a PIC 16F628A Microcontroller. There is a schematic and code available however the original project was not documented in English. Have a look at the Google translation that did a decent job of translating this one. [via]

UV LED Controller using a PIC 16F628A Microcontroller – [Link]

27 Jan 2008


This circuit is a small stereo amplifier for all suitable applications like amplifying small speakers, boxing, etc. It is also suitable for car use but before, the power supply must be choked with at least 150mH and it must give up to approximately 6 to 7 amps during the upstream performance.

Low Cost 2×20 Watt Stereo Amplifier by TDA2005 – [Link]

27 Jan 2008


The PeanutBot robot consists of three microphone circuits, three servo motors, an MCU and a PC. The three microphones were used to triangulate the angle of the source relative to the robot. The audio source plays a continuous stream of pulses. Pulses were chosen over a continuous tone because, instead of detecting phase difference in the audio signal, our system detects the arrival time of the signal at a certain amplitude at each microphone.

Autonomous Sound Finding Robot – [Link]

27 Jan 2008


Tim made a DIY handheld electronic version of the African board game Mancala, he writes:

Last summer at our annual family gathering, I learned the African game Mancala from my wife’s cousin Danielle. Actually, there are many variations that go by that name, so I learned the one she plays. The basic game is described on Wikipedia, but I don’t see a quick link to the rules we’re using.

I had fun exploring strategies for the game, and ended up proposing three heuristics that I thought could play a pretty good game by themselves, applied mechanically. I wanted to automate them so I could play against them, but never got around to writing the program.

A while later, I pulled out a two-line by 16-character LCD display that I had bought on impulse, and felt like using it for something. And I also wanted to try using the PIC18F series of microcontrollers; I’d used the PIC16F series before, but the 18s are a step up in features and architecture and I wanted to explore them.

It seemed like a fast fun project, and I got the basic form factor up and running in a weekend, and some simple playable UI code in another evening.

DIY handheld electronic version of the African board game Mancala – [Link]

27 Jan 2008


hanzablast writes:

In this video I’ll show you how you can make a very simple but very effective motion alarm. It can protect anything you don’t want to be moved without you knowing it. Bags, doors, drawers, you name it.

15 dollar universal motion alarm – [Link]

27 Jan 2008


Sony has announced the development of a new Blu-ray reader / writer module that is not only smaller than previous components, but promises to be cheaper as well due to a simplified manufacturing process. The new laser housing is less than three millimeters thick, according to the Japanese manufacturer and co-developer Nichia Corporation, enabling it to be incorporated into smaller devices such as portable players. Sony predicts that we’ll first start seeing 9.5-millimeter laptop BD drives which employ the module later this year.

Sony announces new Blu-ray module, should drive down costs – [Link]

25 Jan 2008


Flylogic Engineering’s Analytical Blog writes:

An 8k FLASH, 512 bytes EEPROM, 512 bytes SRAM CPU operating 1:1 with the external world unlike those Microchip PIC’s we love to write up about :).

It’s a 350 nanometer (nm) 3 metal layer device layed out in CMOS. It’s beautiful to say the least; We’ve torn it down and thought we’d blog about it!

ATMEGA88 Teardown – [Link]

25 Jan 2008


Keith’s Electronics Blog writes:

Knowing what kind of equipment to salvage for electronic components isn’t enough; you have to know how to get the parts out, or you’re just stockpiling junk. Through-hole ICs may be best stored on the original circuit boards to salvage when needed; but common components like resistors, capacitors, and diodes are much more economical to salvage in bulk, then sort, store, and have ready on demand.

How to Salvage Electronic Parts – [Link]





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