Electronics prototype being checked before PCB design

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.

Project type
Power and wiring
Module isolation
Firmware and debugging
PCB readiness

How to use the score

Low scores are useful. They tell you where to stop guessing.

0-39: High risk Do not order a PCB yet. Check power, ground, minimal sketches, and module behavior first.
40-69: Debuggable The project has some structure, but one or two weak areas can still cause random failures.
70-100: Closer to reliable You may be ready to document the circuit, clean the BOM, and prepare for a PCB review.

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.