Getting started with Cozmo
Cozmo is a little toy robot with a python SDK. The setup is a little quirky, but nevertheless fun.…
Printing in Python 2.7 versus Python 3
In Python 2, it is a special statement and Python 3, print is a function. Python print “tj” The output…
Electrical Applications, quiz 0001
Look at the following circuits. What will happen when the switch is turned on: Simple LED, resistor and battery 2.…
Electrical Applications, Components, Values and Units
Resistors https://en.wikipedia.org/wiki/Resistor Resistors are measured in Ohms Ω. They are used to limit the current that flows through the…
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…
Electrical Applications, 555 Timer
The 555 is our first steps into chips. The 555 is a timer chip, this means that it will ‘tick’…
Electrical Applications, Potentiometer
A Potentiometer (pot) is a resistor that can be both fixed and varied, also known as variable resistors. A typical…
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…
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…
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,…