Hacking DMM Tweezers

_smart_tweezers_Calibration_Pot

These Tweezers are pretty cool tools for anyone doing SMD components. We tried them out and found them very pleasant well made. They are able to identify components and take readings easily with one hand. One thing they are missing, however, is the ability to measure voltage. The people over at Openschemes decided to see if there was a way around that. As it turns out, the chip used in the unit already has the capability to measure voltage. They take us through the process of modding the unit to be able to take advantage of this un utilized feature. From the outside, the only difference is a new switch to set the mode to voltage. Great job guys.

[via Hacked Gadgets]

Push Potentiometer From Spares

ppot

In an effort to simplify his interface, [danwagoner] cobbled together this push potentiometer. It utilizes a potentiometer mounted directly above a push button with a spring mounted around it. This way the user has only one item to deal with. They can twist the knob and press down on it to push the button.  We love seeing people come up with ways of creating their own items instead of buying something. This was fairly inventive and reminds us of the LED buttons we saw back in January. Great job [danwagoner].

RepRap Wedge

reprap_wedge

Generation 2.0 of RepRap, the self replicating 3d printer, is approaching realization. Code named “Mendel”, the new design will be wedge shaped rather than a box which offers a few benefits. The overall design is smaller than the original RepRap but the printable area is larger. This means more functionality with less building material. With each new generation of this project the assembly gets easier and total parts price drops making the RepRap available to a much wider audience.

The RepRap blog has put forth some design specs, a picture of the assembled prototype, and has links for general assembly information (ZIP). We won’t see a finished version of this released for a few months but so far it looks like a big leap forward.

Propeller Platform

Propellor_Platform

[nmcclana] has posted an assembly walkthrough for an Arduino-style prototyping board for the 80 MHz, eight core Parallax Propeller Microcontroller. While not board compatible with Arduino shields like the ARM-based Maple board we covered, it does have that familiar layout, and provides access to all 32 I/O pins, and the 3.8″ x 2.5″ footprint was kept in mind to allow easy creation of shields modules that can be designed using ExpressPCB’s miniboard service. The Platform Kit also has the advantage over other Propeller kits such as SchmartBoard’s offerings, which require soldering of surface mount parts. Kits are available at Gadget Gangster, and ready for your next design that needs a little more sauce than the Arduino can offer.

Fritzing, Go From Prototype To Product

fritzing

Fritzing is an open source project designed to help you move from a prototype to a finished project. Aimed at those basing their projects around Arduino, you start by building your physical prototype, then recreate it with Fritzing software’s graphical editor. From there you can generate a schematic, PCB artwork, and PCB production files.

[thanks CH]

Regulated Breadboard PSU

sparkfun_bbpsu

SparkFun has released a breadboard power suppy that can provide regulated 3.3v or 5v. Unlike the supply we saw from adafruit industries earlier this summer, this one is based on an lm317. This small device features on/off switch, voltage selection swith, and appropriately spaced pin headers to plug into both the top and bottom rails of a standard breadboard.  Rather build it yourself? Take a look at the schematic provided (PDF).