iDroidSim vs MicroController Learning Lab

iDroidSim is a simple and powerful circuit simulator. Perfect for students new to electronics circuit design and construction, hobbyist and tinkerers and even seasoned professionals who want a quick, handy tool to perform electronics circuit design calculations. That's interactivity and innovation you can't find in best SPICE tools for PC. iDroidSim simulator solves basic resistive circuits using Kirchoff’s Current Law (KCL) in much the same way a student in a circuits class would,the simulator systematically forms a matrix in accordance with KCL and then proceeds to solve for the unknown quantities using various algebraic techniques such as Gaussian elimination and sparse matrix techniques. For non-linear components, such as the diode and BJT ,iDroidSim engine searching for the approximate solution by making an initial guess at an answer and then improving the solution with successive calculations built upon this guess. This is called an iterative process.iDroidSim simulation uses the Newton-Raphson iterative algorithm to solve circuits with non-linear I/V relationships. For reactive elements(capacitors and inductors),the iDroidSim uses numeric integration methods to approximate the state of the reactive elements as a function of time. iDroidSim offers the Trapezoidal(I'll add a GEAR method later) integration methods to approximate the state of the reactive elements. Although for most circuits, both methods will provide almost identical results, it is generally regarded that the Gear method is more stable, but trapezoidal method is faster and more accurate. iDroidSim for now can simulate: -Resistor -Capacitor -Inductor -Potentiometer -Light Bulb -Ideal operational amplifier -Bipolar junction transistor (NPN PNP) -MOSFET N-channel depletion -MOSFET N-channel enhancement -MOSFET P-channel depletion -MOSFET P-channel enhancement -JFET N and P -PN Diode -PN Led diode -PN Zener diode -AC current source -DC current source -AC voltage source -DC voltage(battery) source -CCVS - current controlled voltage source -CCCS - current controlled current source -VCVS - voltage controlled voltage source -VCCS - voltage controlled current source -Square wave voltage source -Triangle wave voltage source -AC ampermeter -DC ampermeter -AC voltmeter -DC voltmeter -Two channe oscilloscope -SPST Switch -SPDT Switch -Voltage controlled switch -Current controlled switch -AND -NAND -OR -NOR -NOT -XOR -XNOR -JK flip-flop -7 Segment Display -D flip-flop -Relay -IC 555 -Transformer -Graetz Circuit If you are making an oscillators you have to put a small initial value on some of the reactive elements.(see the examples)

MicroController Learning Lab is the ultimate interactive learning tool for anyone who wants to understand microcontrollers — from complete beginners to experienced engineers looking to sharpen their skills. Whether you are exploring electronics for the first time or building your next embedded systems project, this app gives you everything you need in one place. What's Inside: Curriculum — Structured lessons covering microcontroller fundamentals, digital I/O, analog sensors, PWM, serial communication, interrupts, and more. Learn at your own pace with clear, focused explanations. Interactive Simulators — Five animated simulators let you visualize how circuits and signals behave in real time. Watch LED blink patterns, PWM duty cycles, ADC conversions, and serial data come to life on screen. Breadboard Lab — Wire up real project circuits on a virtual breadboard. Auto-Wire builds the connections instantly. Then launch the Live Simulation to see your circuit running with animated signals and pin states. Illustrated Diagrams — 30 hand-crafted technical illustrations cover everything from pinout diagrams and circuit schematics to communication protocol timing charts. Real-World Projects — Eight guided projects show how microcontrollers are used in actual applications: soil moisture monitors, weather stations, smart relays, motor controllers, and more. Reference Library — Quick-access tables for GPIO pinouts, register maps, timing values, and common code patterns — everything you need without leaving the app. Microcontrollers Covered: ATmega328P (Arduino Uno), ATtiny85, ESP32, RP2040 (Raspberry Pi Pico), STM32 Who Is This App For: Students in electronics, computer engineering, and robotics courses. Hobbyists building their first embedded project. Engineers who want a fast visual reference on the go. No prior electronics experience required. Start from the basics and build up to real working projects.