IoT Sensor Node Battery Life Simulator (2D)

A battery-powered IoT sensor spends nearly its entire life asleep, waking only for a few milliseconds to transmit a reading — so its lifetime is decided almost entirely by that brief radio burst. This 2D companion models the same sensor node reporting to a gateway and computes its true time-on-air using the actual LoRaWAN airtime formula (spreading factor, bandwidth, coding rate), alongside NB-IoT and BLE alternatives, then derives the duty cycle, average current draw and projected battery lifetime from the report interval, payload size and sleep current you choose. A to-scale, zoomable duty-cycle timeline replaces the 3D scene here — scroll in on the transmit pulse to see just how brief it really is against the sleep interval around it, while the radio pulses and battery gauge respond live as you trade range and reliability for months or years of runtime.