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de:volt
A breadboard simulator with real physics, in your browser
67 followers
A breadboard simulator with real physics, in your browser
67 followers
de:volt is a breadboard simulator that runs real circuit physics in your browser. Wire up 105 parts on a 400 or 830-point board and the circuit runs as you build. Probe it with a 4-channel scope and multimeter, program an Arduino Uno or Nano, micro:bit or RP2040, learn with guided lessons that pass on real measurements, or run a whole class with assignments, marking and live lessons.
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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?
congrats!! how close does it get on messy stuff like a loose jumper, that's what actually trips ppl up on a real board
very cool! restarted exploring with hardware recently, this will be helpful. does it have mcp or a way to operate with claude/codex?
The 'pull the resistor out and watch the LED burn' detail is what sold me — most sims just show you the right answer, this one lets you break things and learn why. Curious how far the failure modeling goes — does it handle things like a shorted rail or reversed polarity, or is it mostly component-level stuff like voltage sag?
one vote for an l298n motor driver + small dc motor next, thats exactly where ppl fry stuff on a real board. also can you export the scope trace or is it screenshot only
Having a lesson advance only when the circuit produces the expected measurement is a thoughtful teaching choice. It ties finishing a step to what the circuit does, and gives the learner something concrete to explain.
Love that the circuit actually runs live as you build, so a missing resistor really burns the LED. Learning electronics by breaking things safely is a great angle.