Hi Product Hunt! I'm Dev, and I built de:volt.

I wanted a breadboard simulator that behaves like the real thing. In de:volt you place parts and run wires on a virtual breadboard, and the circuit is live the whole time you build. Leave out a resistor and the LED burns out. Load a weak battery and its voltage drops. Put the scope on a 555 timer and you see the capacitor charge and discharge. It all runs in your browser, with nothing to install, on a laptop, tablet or phone.

Three things to try, no sign-up needed:

Build an LED circuit, then pull the resistor out and watch what happens.
Program an Arduino, micro:bit or Raspberry Pi Pico and wire it to displays, sensors and motors.
Take the free Learn course: guided builds where each step ticks off only when your circuit actually works.

If you teach, de:volt for Education adds classes, join codes, assignments, marking and live lessons, and plugs into your school's learning platform.

The free Hobby plan has every part and 5 projects. Pro adds unlimited projects, the AI assistant and tutor, and live co-editing. For Product Hunt: code PHMONTH takes your first month of Pro to A$4.99, or PHYEAR takes your first year to A$49.99.

I'd love honest feedback. Which part should I add next, and what would you build first?

Hi Product Hunt! I'm Dev, and I built de:volt.

Three things to try, no sign-up needed:

Build an LED circuit, then pull the resistor out and watch what happens.
Program an Arduino, micro:bit or Raspberry Pi Pico and wire it to displays, sensors and motors.
Take the free Learn course: guided builds where each step ticks off only when your circuit actually works.

If you teach, de:volt for Education adds classes, join codes, assignments, marking and live lessons, and plugs into your school's learning platform.

I'd love honest feedback. Which part should I add next, and what would you build first?

de:volt

A breadboard simulator with real physics, in your browser

A breadboard simulator with real physics, in your browser