Choose the exact thing that is failing: upload, WiFi, sensor reading, relay output, OLED display, GSM network, or random reset.
PCB file management software for hardware teams
Stop losing PCB releases in messy folders.
PCB Vault helps electronics engineers debug, document, organize, and release PCB projects properly. Keep Gerbers, BOMs, schematics, revisions, and manufacturing handoff files tied to the right board version.
Choose your path
How can we help your hardware project?
Select the path that matches your current goal:
Diagnose hardware, wiring, and code issues for ESP32, Arduino, I2C, relays, and sensors.
Explore diagnostics → Journey 02 Prepare a PCB ReleaseChecklists and guidelines for Gerbers, BOM, pick-and-place, assembly notes, and firmware.
See release checklists → Journey 03 Organize Product DataKeep files, BOMs, and revisions organized in an offline-first desktop vault. Upgrade to PDM later.
Explore software →Journey 1: Fix a Project
Isolate and resolve hardware, wiring, and firmware bugs.
Most electronics projects fail in predictable places. The trick is testing in the right order. Use our step-by-step diagnostic routes, checkers, and builder tools to fix the symptom you see today.
Check power, ground, pinout, library, serial output, and a minimal test sketch before touching the full project.
Move from “it worked once” to stable wiring, clean power, documented assumptions, and a PCB-ready checklist.
Choose your failure path
What is your project doing right now?
Pick the symptom that feels closest. Each path starts with the most likely cause and then moves into deeper checks.
ESP32 WiFi Not Connecting
2.4 GHz networks, wrong credentials, router settings, weak power, and test code.
ESP32 Upload Error
COM ports, USB drivers, BOOT button timing, bad cables, and board settings.
ESP32 Keeps Resetting
Brownouts, weak USB power, relay noise, boot pins, and watchdog resets.
I2C Device Not Found
SDA/SCL wiring, pullups, address scan, voltage mismatch, and bus conflicts.
Arduino Not Detected
Missing COM port, charge-only cable, CH340 drivers, board choice, and bootloader issues.
Relay Module Always On
Active-low logic, COM/NO/NC wiring, GPIO startup states, and input pins.
Arduino Sensor Not Working
Power, ground, signal pins, analog vs digital output, libraries, and raw readings.
SIM800L Keeps Restarting
Peak current, buck converters, capacitor placement, antenna, SIM, and LED states.
ESP32 OLED Troubleshooting
I2C address, SDA/SCL pins, SSD1306 vs SH1106, blank screens, and contrast.
DHT11/DHT22 Showing NaN
Sensor type, pullup resistor, DATA pin, timing, power, and library setup.
4-minute project triage
Before you buy another module, score the basics.
A surprising number of “dead” projects are actually one weak rail, missing ground, wrong pin, wrong library, or untested module. Use this quick score to decide your next move.
The useful route through PCBVault
Explore like a builder, not like a reader.
Start with the failure you can see today.
Tool Run the I2C scannerFind OLED, LCD, sensor, RTC, and module addresses.
Tool Check ESP32 pinsAvoid boot pins, flash pins, and input-only GPIO mistakes.
Tool Estimate powerCatch brownouts, SIM800L bursts, relay noise, and servo current spikes.
Step 2 Save the rescue packKeep the power, wiring, module, and PCB checklists nearby.
Step 3 Prepare for PCBConvert a working breadboard into something repeatable.
Step 4 Get unstuck fasterUse a review when the project has too many possible failure points.
Journey 2: Prepare a PCB Release
Checklists and guidelines for a clean manufacturing release.
Avoid expensive board spins and component mismatches. Use these step-by-step checklists to review, manage, and package your Gerbers, BOM, assembly notes, and firmware before ordering.
Journey 3: Organize Product Data
When PCB files start costing you time, move them into a real vault.
Scattered Gerbers, wrong BOMs, unclear revisions, missing manufacturing notes, and client handoff confusion are not just admin problems. They can waste prototype batches and slow paid delivery. PCBVault Software gives PCB designers and hardware teams a local-first vault for files, releases, and handoff packages.
Download for Windows
PCB Vault Software
Organize PCB projects, Gerbers, BOMs, schematics, revisions, assembly notes, and manufacturing handoff files from one offline-first desktop app.
Team product control
Electronics PDM
Manage PCB revisions, BOMs, components, datasheets, firmware links, ECO approvals, audit trails, and production releases.
Use guides and tools to isolate the actual electronics fault.
Keep the correct files, BOM, and release package together.
Add approvals, ECOs, component control, and traceable releases.
Free electronics project rescue pack
Keep the diagnostic checklist beside your workbench.
Get a practical pack for power checks, wiring checks, module isolation, parts buying, and deciding when your breadboard is ready for a PCB.