Electrical Applications, Resistor Color Code
How do you identify a resistors value if you don’t have a multimeter available? Each resistor has a band of colors. These bands identify the value in Ω as well….
Read More →Electrical Applications, 555 Timer
The 555 is our first steps into chips. The 555 is a timer chip, this means that it will ‘tick’ like a clock. We will use this to turn an….
Read More →Electrical Applications, Potentiometer
A Potentiometer (pot) is a resistor that can be both fixed and varied, also known as variable resistors. A typical Potentiometer: https://www.adafruit.com/product/356?gclid=Cj0KCQjwu_jYBRD8ARIsAC3EGCJ5JS4kSB1WgJjxSOwnekQ925ZnsxyONZT5ODQkNDcvyr0QBmkxM20aAgm7EALw_wcB
Read More →Electrical Applications and the Transistor
Looking at Electrical Applications we will focus on various aspects to learn. This one covers the transistor. In its simplest form, a transistor acts like a switch. Electricity will flow….
Read More →NPM Raspberry Pi Zero onoff and Closures
Using a Pi Zero to monitor some input pins, a change on the input will trigger an event. This is using NPM onff (https://www.npmjs.com/package/onoff). The example code with a button….
Read More →Pi Zero W read GPIO with nodejs 10
The Pi Zero W uses the arm6l architecture. For node v10 the zip file can be found in this directory, I would imagine future versions would be follow a similar….
Read More →Makeblock Starter Robot: Temperature Reading
The Makeblock Starter Robot comes with an Arduino derivative called the Orion. This board is similar to the Uno but adds RJ45 connectors to allow simple connection to peripheral devices….
Read More →Tracking the sun location
This really useful web application shows the position of the sun at a location at any time of day or year. Very useful when determining where to put solar panel….
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