Circuit library

300+ circuits, filmed.

PathYour first 10 circuits 10 · ~45 min → PathMaster parallel circuits 8 · ~1 h → PathLogic gates from scratch 12 · ~2 h →

Power block, LED and switch wired in a single loop

3:40 BASEBEGINNER Your first circuit: one light, one switch

LED and buzzer on two branches from one power block

4:12 BASEBEGINNER Parallel circuit: light and buzzer at once

A resistor block wired into an LED circuit

5:05 BOOSTINTERMEDIATE Dim a light with a variable resistor

A buzzer circuit closed by a second block

6:30 BOOSTINTERMEDIATE Tilt-triggered alarm

Motor and wheels driven through a switch

5:48 BOOSTINTERMEDIATE Reverse a motor with two switches

A logic-board circuit with multiple switched inputs

8:55 PROADVANCED AND-gate door lock: two switches, one light

9:10 PROADVANCED OR-gate: either switch turns on the fan

Two ways to wire a power block to an LED

2:58 BASEBEGINNER Control a light with the tilt block

3:22 BASEBEGINNER Light and buzzer in series

A buzzer circuit with a resistance block in the path

3:05 BASEBEGINNER Control the buzzer's loudness with a resistor

One power block feeding two LED branches

4:44 BASEBEGINNER One switch controls both: light + buzzer in parallel

Hands building a circuit on the Reactor Rescue board

4:30 GAMEBEGINNER Reactor Rescue blueprint drill: Level 1 in 2:00

+288 more circuits. This prototype ships 12 of them — the full library migrates from the current Learning Resources page.

Already own the blocks?Reactor Rescue's 10 blocks build a surprising amount of this library. In the real build, you tell us what you own and the library filters itself.