https://circuitbench.co.uk/tags/pinout/ Recent content in Pinout on CircuitBench Hugo en-gb Mon, 20 Jul 2026 00:00:00 +0000 https://circuitbench.co.uk/hc-sr04-ultrasonic-sensor-pinout-and-wiring/ Mon, 20 Jul 2026 00:00:00 +0000 https://circuitbench.co.uk/hc-sr04-ultrasonic-sensor-pinout-and-wiring/ A pinout and wiring reference for the HC-SR04 ultrasonic distance sensor. https://circuitbench.co.uk/555-timer-ic-pinout-and-how-it-works/ Sun, 19 Jul 2026 00:00:00 +0000 https://circuitbench.co.uk/555-timer-ic-pinout-and-how-it-works/ 555 timer pinout, how the internal comparators and flip-flop actually work, and the wiring mistakes that stop it oscillating.