Difference between revisions of "Electronics From Scratch is Easy"
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Workshop: Electronics From Scratch is Easy - a Nottingham Hackspace geek's introduction to electronics and why you can do it! | 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. | 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. | ||
| Line 6: | Line 8: | ||
* Electromagnetic phenomena | * 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! | * electrical charge - electrons! | ||
* static electricity - making it, storing it, using it! | * static electricity - making it, storing it, using it! | ||
| + | * experimental science | ||
* a galvanometer! | * a galvanometer! | ||
| − | * current - the flow of electrons | + | * real world analogies - some good, some bad, but most "good enough"! |
| + | ** water | ||
| + | ** air | ||
| + | ** stone | ||
| + | ** movement and potential | ||
| + | * current - the "flow" of electrons | ||
* conductivity | * conductivity | ||
* electrical potential and voltage | * electrical potential and voltage | ||
| Line 15: | Line 29: | ||
The physics and mathematics of electromagnetic flux with Lorentz and Maxwell's equations (and why you can immediately forget this!) | 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 | * Lumped Matter Discipline | ||
| + | ** moving from the realm of maths and physics to the realm of hands-on engineering | ||
** we use components! | ** we use components! | ||
** Open the black box - take a look - close it forever! | ** Open the black box - take a look - close it forever! | ||
** as long as we treat these things nicely, everything will work! | ** as long as we treat these things nicely, everything will work! | ||
** play, fail, try again! | ** 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 | ||
| + | |||
| + | Components | ||
* resistance to current flow - resistors | * resistance to current flow - resistors | ||
* storage of charge - capacitors | * storage of charge - capacitors | ||
| Line 35: | Line 63: | ||
* ????? | * ????? | ||
* world domination! | * world domination! | ||
| + | |||
| + | [[Category:Events (past)]] | ||
| + | [[Category:Electronics]] | ||
Latest revision as of 20:25, 19 April 2019
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"!
- water
- air
- stone
- movement and potential
- current - the "flow" of electrons
- conductivity
- 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
Components
- resistance to current flow - resistors
- storage of charge - capacitors
- other forms of impedance and inductance (conversely, reactance!)
- silicon semiconductors - a diode!
- valves
- bipolar transistors
- building neat things
- logic circuits
- bigger and bigger systems
- ICs
- microcontrollers/SOCs/computers
- ferrite core memory
- supercomputers!
- ?????
- world domination!