certainly links to basic tutorials about hardware/analogue electronics are needed, I encounter many younger people who are skilled with PCs/Macs/Linux and /want/ to get into working with microcontrollers but find the electronics side overwhelming, as unlike the
1980s when I grew up they didn't experiment much with analogue electronics (even building a loud hi fi or DJ setup is often discouraged these days due to increased controls against noisemaking)
I do think we need both the intermediate/advanced info (slightly more than the initial Arduino or other microcontroller code examples) *and* basic tutorials about electronics, at least for the benefit of the English (who do seem to have slipped back skills-wise compared to the rest of Northern Europe). As even simple experiments (i.e how/why a transistor switch works to allow a relay to be used) can be used to encourage people to get into the habit of reading datasheets etc..
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