Electronics From Scratch is Easy
Workshop: Electronics From Scratch is Easy - a Nottingham Hackspace geek's introduction to electronics and why you can do it!
Duration: could be done in 2hrs.
Many a geek has come to electronics late and thinks that there's just a bit that he/she doesn't get. The subject appears "hard". Why isn't it straightforward like software? Well, the good news is that it IS straightforward and all that is needed is a particular way of looking at things.
This stuff just works but why? An inquisitive mind.
- Electromagnetic phenomena
- WTF is electricity? I mean, seriously, WTF is electricity? !!!!!
- why the correct words are important
- a common understanding
- common misunderstandings
Let's look at the "stuff"
- electrical charge - electrons!
- static electricity - making it, storing it, using it!
- experimental science
- a galvanometer!
- real world analogies - some good, some bad, but most "good enough"!
- movement and potential
- current - the "flow" of electrons
- electrical potential and voltage
The physics and mathematics of electromagnetic flux with Lorentz and Maxwell's equations (and why you can immediately forget this!)
- maths: too abstract?
- Euclidean/Greek viewpoint (a love of mathematics and the equations) vs. Babylonian viewpoint (a love of physics and the concepts)
- Lumped Matter Discipline
- moving from the realm of maths and physics to the realm of hands-on engineering
- we use components!
- Open the black box - take a look - close it forever!
- as long as we treat these things nicely, everything will work!
- play, fail, try again!
- hold on, this is taking too long -- back to the drawing board: we can do it with maths!
Only after I've attained a visual and gut-level understanding of something, only then is the math useful to me for refining it and adding all the details. However, for me the math alone is not a genuine explanation. Math is just a tool or a recipe, a crutch for those who want nothing except the final numerical result, and it certainly does not confer expert knowledge.
William Beaty (1995) http://amasci.com/ele-edu.html
- resistance to current flow - resistors
- storage of charge - capacitors
- other forms of impedance and inductance (conversely, reactance!)
- silicon semiconductors - a diode!
- bipolar transistors
- building neat things
- logic circuits
- bigger and bigger systems
- ferrite core memory
- world domination!