Interesting things form around the web.

Use Python with Arduino

If you're interested in learning to combine the power of Arduino with the simplicity of Python, these may be the tutorials for you. This series of lessons will teach you how to take your Arduino projects to the next level by having the Arduino interact with the Python programming language. Python is a free program you [...]

By | July 28th, 2015|Notes|

DIY heart and activity tracking device

This open source heart and activity monitoring system would be a great kit. I'll put it on the todo list. A few weeks ago, my doctor told me to keep an eye on my heart with the help of DIY toolkit BITalino, and I wrote about it in Why my doctor prescribed me open hardware. Although [...]

By | July 27th, 2015|Notes|


There are tons of Arduino clones on the market that bring little more to the table than a few extra or different connectors or just a different shape. With the PCIeDuino we see a new form factor that actually brings new functionality to the table: mini-PCIe. Now you can integrate an Arduino board directly into your single [...]

By | July 26th, 2015|Notes|

ISPtouch for AVR Microcontrollers

Daniel Spilker made a nice spring loaded ICSP connector for programming AVR microcontrollers. We've seen similar solutions before; like the Tag-Connect.Most of these designs have the advantage that you don't have to solder a header. However, when the locating pins are included in the footprint, the overall connector footprint remains the same. In the T400 we use a [...]

By | July 13th, 2015|Development tools, Notes|

Diodes – Types and Applications

Learn all about diodes, their types, and applications. In semiconductor and electronics industry, a diode is a widely used discrete component. It is a significant element in many electronic circuits and applications ranging from low power signal circuits to power rectification. Based on the functions and ratings, there are different types of diodes. However, all [...]

By | June 9th, 2015|Learning, Notes|

Othermill review

CNC mills can be better than etching if you're not interested in dealing with chemicals. The Othermill will even take care through hole drilling. The main challenge with DIY PCBs is still dealing with vias. Once you calculate the cost of all the equipment to make reasonable PCBs you may be better off using a [...]

By | June 8th, 2015|Notes|

How does SPI work?

3In a pervious post we mentioned Wingman27's Arduino Constant Current Dummy Load. A part of that Instructable worth its own post is Wingman27's videos explaining SPI. All the tutorial source code used in the videos can be found on Wingman27's Github page. I have built a programmable dummy load inspired by Daves initial one, I think it [...]

By | June 5th, 2015|Instructional, Notes|

Wi-Fi Connected E-Ink Display

This would make a nice remote data display. People implementing the Scrum Methodology for project management often record all their tasks on a big whiteboard. However, it’s useful to have up-to-date graphs to ensure projects are on track. [Sprite_TM] augmented the whiteboard by building an Wi-Fi connected E-Ink Display. Source: Wi-Fi Connected E-Ink Display | Hackaday

By | June 4th, 2015|Notes|

Arduino Constant Current Dummy Load

Check out this detailed constant current dumy load Instructable by Wingman27. It is a programmable Arduino-based instrument that allows the program a specific current to draw from a source. Wingman27 goes through the theory behind design his device enough that you'll take away a solid understanding. I'd love to see this with a programmable power curve to simulate [...]

By | June 3rd, 2015|Notes|

Low cost DC millivolt source

This DC millivolt source would be good for simulating thermocouples during product development and testing. How would you use it? DC millivolt sources are often used for thermocouple simulations, DMM, ADC and analog circuit calibrations and fault findings, etc. Most of the DC millivolt circuits are based on expensive (and sometimes hard to find) operation [...]

By | June 2nd, 2015|Notes|