Pacing Electronics 101 alongside Pico
For teachers, not students. The early Pico lessons are reading before there’s anything to build — board tour, headers, flashing MicroPython. Electronics 101 doesn’t depend on any of that, so students who finish reading early (or need something hands-on while others are still reading) can be rotated onto it instead of sitting idle.
Suggested pairing
| While students read… | They build… | Why |
|---|---|---|
| Pico 00–02 (front matter, board tour, headers, flashing, first ViperIDE program) | Electronics 101 §1 — Voltage and current | Nothing physical on the Pico is wired up yet. Meters give them hands-on time immediately, and the Pico’s 3V3/VBUS/GND pins are literally the same kind of source they’re measuring. |
| Pico 03 (physical computing concepts) | §2 — Switches and potentiometers, §3 — Breadboards and forward voltage | This chapter tells them about resistors, LEDs, and breadboards. §2/§3 make them build it instead of reading about it. |
| Pico 04 (physical computing with Pico — first real GPIO wiring) | §4 — Photoresistor | A digital input on Pico is conceptually a button. A photoresistor is the analog version, and sets up why Pico eventually needs an ADC. |
| Pico 05 (traffic light controller) | §5 — Connect a Microbit | Same idea — code deciding when a pin goes high — on a different board, in a different language. |
Concept parallels worth naming out loud
- The 220 Ω series resistor is the same calculation in both pathways. Whatever LED math a student does in Electronics 101 §3 transfers directly to wiring an LED on a Pico GPIO pin.
- Pico’s logic is 3.3 V and its pins source far less current than a bench supply. The voltage/current intuition from §1 and §3 is what lets a student recognize when a Pico pin can’t drive something directly and needs a transistor or driver instead.
- A switch as “a break in the loop you control” (§2) is the prerequisite for understanding why a pull-up resistor exists on a Pico input pin. CLAUDE.md’s own framing is the reason this matters: a student who understands why the pull-up is there can debug it; a student who only copied the diagram can’t.
- A potentiometer and a photoresistor (§2, §4) are both voltage dividers
— which is exactly the circuit behind
machine.ADCon the Pico side. - §5’s brownout warning is the same reason ROV thrusters get their own power rail, not power borrowed from the Pico. If a student has already hit this once with a micro:bit and a servo, the ROV wiring rule stops looking arbitrary.