Free diagnostic tool
Score your electronics project before you debug blindly.
Use this calculator to find weak spots in ESP32, Arduino, sensor, relay, SIM800L, OLED, motor, and breadboard-to-PCB projects. It gives you a reliability score, likely risk areas, and the next guides to read.
Reliability calculator
Answer the checks that apply to your project.
This is not about perfection. It is about finding the highest-risk failure points before they waste more time.
How to use the score
Low scores are useful. They tell you where to stop guessing.
Free checklist
Want the printable version?
Download the electronics project rescue pack and keep the power, wiring, module, and PCB-readiness checks beside your workbench.