MyPart, An Open Source Portable Air Particle Counter
One of the most harmful airborne pollutants with respect to human health is particulate matter. Air particle counters are used to determine the air quality by counting and sizing the number of particles in the air. This information is useful in determining the amount of particles inside a...
Continue ReadingAC Motor Speed Controller for Modern Appliances Using LS7311
The project specifically designed for motor speed control application in appliances such as blenders, etc. Tact switches provided for selecting/indicating from 1 to 10 power levels ( Speed Levels). The project is ideal for universal and shaded-pole motor speed control for...
Continue ReadingTP4056 3V3 Load Share Upgrade
A lot of project are battery powered and some of them need dual battery links. Robert on hackaday.io had shared his new project that shed light on this issue. He built an load sharing addon board with the ability to charge the battery while the project is operating. Many Chinese...
Continue ReadingZeroPhone – a Raspberry Pi smartphone
Arsenijs build a Pi-powered open-source mobile phone (that you can assemble for 50$ in parts). Currently, it costs about 50$ in parts, and all the parts are available on eBay. No BGA or other difficultly solderable ICs are used (with the obvious exception of Pi Zero). User interface...
Continue ReadingThermometer That Pushes Arduino to Its Limits
by gundolf @ instructables.com: Starting playing with Arduino seems simple enough. You can find all sorts of tutorials, instructables, wiring and code examples for pretty much every sensor, component, or module available. So far so good. But when the time comes for building a more...
Continue ReadingAlarm System Powered By Arduino
Dejan Nedelkovski had built an Arduino security and alarm system project that uses an ultrasonic sensor for detecting objects and a buzzer for notification. Components needed to build this simple system are: Arduino board, LCD display, 4x4 keypad, ultrasonic sensor and buzzer. The...
Continue ReadingDual-Channel Quadrature Hall-Effect Bipolar Switch Module for Magnetic Encoder
The A1230 is a dual-channel, bipolar switch with two Hall-effect sensing elements, each providing a separate digital output for speed and direction signal processing capability. The Hall elements are photo lithographically aligned to better than 1 µm. maintaining accurate mechanical...
Continue ReadingMINI PIC GPS DATA LOGGER WITH MICRO-SD CARD
pinko @ blog.exrockets.com has build a mini GPS data logger based on PIC18F25J11 microcontroller. Based on my first GPS data logger I made a new version which is even smaller than the initial design and should be able to fit in any rocket, RC model etc. The new GPS data logger uses...
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