JumperOne

Author's details

Date registered: May 22, 2011
URL: http://jumperone.com

Latest posts

  1. How To Make Nice Looking DIY Front Panel — January 2, 2013
  2. Manson NSP-3630 Switch-Mode Bench Power Supply Teardown — December 10, 2012
  3. Converting ATX Power Supply to Lab Bench Power Supply F.A.Q. — December 3, 2012
  4. Hacking Insulin Syringe Into a Logic Probe — August 28, 2012
  5. Why You Don’t Want To Buy a Cheap Alarm (Motorcycle Alarm Teardown) — August 28, 2012

Author's posts listings

Samson C01U USB Microphone Teardown

One of the best ways to learn electronics is to see how someone else, more experienced designed something. Whether you’ll disassemble some device or will see some schematic or design – it gives you invaluable experience. In many cases you don’t need to reinvent the wheel, just use already known design cliche and only if …

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Using Microcontrollers (Atmel AVR and Microchip PIC)

Many people using Arduino or some other development board in their projects, instead of making their own board with microcontroller because they simply don’t know how to design PCB with microcontrollers. What microcontrollers need in order to operate? This time I will be focusing on two most popular 8 bit micro architectures: Atmel AVR and …

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Using Relays (Tips & Tricks)

In this article I will tell you how to get shorter relay switching times and how to minimize relay current consumption. The same exact things apply to solenoids and solenoid valves. Usually if you want to control relay from microcontroller you would do something like this:

DIY PIC16F883 Development Board

Few month ago I wanted to try to write software for Microchip PIC16F883 microcontroller and I couldn’t find simple development board for it. And so I made my own.

ATtiny2313 – Based Thermostat Project (part1)

My parents growing their own organic food and they asked me to deal with winter temperatures problem in the storage room. It gets really cold here, in Ukraine. Some winters have even lower temperatures than -30°C (-22°F). So right now I designing a simple thermostat for keeping temperature at about 5-7 degrees C above zero. …

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Interfacing Microcontrollers: Temperature Sensors

One of the most often things you need to do in electronics is to measure temperature. Even a simplest device might need an over-temperature protection. In this temperature sensors overview video you’ll find out about most common types of temperature sensors, their main characteristics and usual ways of connecting those sensors to microcontroller. I’ll make …

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Interfacing Microcontroller: Darlington Transistors

In this video I’ll tell you what is darlington transistors, how to use them to switch medium current loads with microcontroller and what downsides they have. Also you’ll find out about darlington arrays. Of course there would be small demonstration of controlling different loads at the end of this video. In case if you don’t …

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LM317 Adjustable Power Supply Followup

In this followup video I’ll show some problems that I encountered with my power supply from the previous tutorial video and will show you how I fixed those. It shows that even with the simplest project where “nothing can go wrong” you can’t predict every problem that could happen.

Simple Adjustable Linear Power Supply (Based Around LM317)

How to build your own linear adjustable power supply based on LM317. In this tutorial I’ll explain how linear power supply works, what parts it consists of and a lot of small details, like how to calculate smoothing capacitor value, or how to choose a transformer. Plus you’ll see how to build an actual power …

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Portable Fume Extractor / Fan

I’ve got a new tool on my workbench – portable fume extractor. It’s 92mm fan that works from 4 AA batteries and has a variable speed. Mobility is a really good thing, especially when you’ve got a tons of equipment and cables on a bench you can drown in.

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