The best multimeter for beginners (or most people, really)

1024px-Transformer_kit

Building your equipment inventory

Getting more serious about DIY electronics and circuitry but don’t have an extensive workbench setup yet? Test equipment is an important part of any workshop, and a digital multimeter (DMM) is one of the most important pieces of test equipment you can own. From measuring current and voltage, to testing capacitors, to waiting for the reassuring “beep” of continuity, you’ll pull out your multimeter for almost every project you build.

The best books on electronics

Electronics is relevant to our modern lives like almost no other field of science. On the one hand, we have the physical world, with objects and phenomena that we touch, see, and interact with. On the other, we increasingly spend time with the digital world, where we log data in spreadsheets or apps, solve complex problems with the help of computers, or rely on various devices to make our lives easier.

Sitting in between these two worlds and bridging the divide is electronics. Without it, there would be no microprocessors, no grids of tiny transistors to switch on and off and do our bidding millions of times per second. No way to power our homes or gadgets, or even manufacture many of the non-technical goods we take for granted. It has truly revolutionized every facet of our existence. Much emphasis today is placed on programming and application development, but it is important to remember that these things are abstractions sitting on top of a physical and electrical foundation.

In case all of this talk of revolution has you fired up, we’ve collected some of the best books to help you learn electronics. Whether you’re a total beginner or advanced engineer, check out the resources below to find a learning guide that’s right for you.

How to solder like a pro

Soldering is a skill that electronics newbies often find intimidating, but it doesn’t have to be. Jeff Keyzer, Mitch Altman, and Andy Nordgren put together an excellent guide called Soldering is Easy. It’s packed with information on how to make good solder joints. Better yet, it’s illustrated in comic book format, so every explanation comes with clear pictures on exactly how to do things.

If you’re new to electronics and circuits, check out the guide to get up and running in no time. Even if you’re experienced but feel like you could shake off some rust, give it a glance. Good soldering technique is a lifelong skill that saves time and energy by creating cleaner, more reliable projects.

Source: MightyOhm via Tinkerlog

CircuitLab helps you sketch, simulate, and share schematics

In a previous post, we covered online IDEs for embedded software development. In order to run embedded programs you need to, well, embed them in something, so we also included a paragraph on Upverter, a tool for collaboratively editing and sharing circuit schematics.  Hardware design is an area that’s still relatively untouched by the web application revolution, and we always love to see new innovation.

More recently, we ran across CircuitLab, an alternative schematic tool with some unique features. On the surface, the site seems extremely similar to Upverter: fire up an online editor, create your circuit in the browser, then save it to your account. At any point in this process, you can share a link to your circuit to let others view it and collaborate.

DIY Arduino oscilloscope using Nokia 3310 LCD screen

Filear.com posted a cool hack that can be done in an afternoon if you have the parts handy.  The author built a DIY oscilloscope using an Arduino Pro Mini and the LCD from a Nokia 3310.  The Arduino is wired up to sample from an ADC port and writes those values to the screen to create a waveform.  Two potentiometers control the sampling speed and input voltage for approximate time and amplitude scaling just like the real thing.