Electronics command center
Fix the prototype. Reorganize the product.
Start with hardware diagnostics on your bench. Then establish layout best practices, file structures, BOM revision control, and product records as you scale to manufacturing.
Quick diagnosis
What is failing right now?
Start here if WiFi, relay, servo, GSM, or camera activity makes the project unstable.
I2C Arduino I2C Scanner CodeRun the Arduino I2C scanner first, then use the address in your display or sensor library.
Upload Arduino or ESP32 upload failsFix USB cables, drivers, board settings, boot pins, COM ports, and serial conflicts.
Relay Relay stays on, clicks wrong, or resets boardCheck active-low logic, COM/NO/NC wiring, coil power, and boot-time GPIO states.
Free tools
Use a calculator before you buy parts or order a PCB.
Power Supply Calculator
Estimate current and catch brownouts, relay noise, SIM800L bursts, and servo spikes.
ESP32 Pin Checker
Check safe, risky, and avoid pins for ESP32, S3, C3, and ESP32-CAM projects.
Arduino I2C Scanner
Find OLED, LCD, RTC, EEPROM, and sensor addresses with copy-paste code.
Reliability Score
Score power, wiring, isolation, firmware debugging, and PCB readiness.
Hub 1
Electronics Troubleshooting
Debug hardware, code, sensors, displays, wiring, and power issues on your workbench.
ESP32
ESP32 WiFi Not Connecting
SSID, 2.4 GHz WiFi, router settings, power, status codes, and minimal test code.
GSM
SIM800L Power Troubleshooting
Current bursts, capacitor, antenna, SIM, and 2G availability.
Camera
ESP32-CAM Not Working
Camera init failed, FTDI wiring, brownouts, upload mode, and WiFi stream.
ESP32 & Wireless
ESP32 WiFi Not ConnectingSSID, 2.4 GHz, router, power, and code checks. ESP32 WiFi Keeps DisconnectingDropouts, reconnect logic, WiFi sleep, and power dips. ESP32 Upload ErrorBOOT button, COM port, USB drivers, and boot-sensitive pins. ESP32 Keeps ResettingBrownout, watchdog, relay noise, and weak 3.3V rails. ESP32 Relay TroubleshootingActive-low logic, relay power, GPIO, and load wiring. ESP32 OLED TroubleshootingI2C address, SSD1306/SH1106, blank display, SDA/SCL.Arduino & Sensors
Arduino Not DetectedCOM port, CH340 driver, USB cable, board selection. Arduino Upload Erroravrdude, old bootloader, RX/TX wiring, reset, port busy. Arduino Sensor Not WorkingNo reading, zero values, libraries, wiring, raw serial checks. HC-SR04 Not WorkingTrigger/echo, ESP32 echo voltage, timeout, and target checks. Servo Motor JitteringWeak power, missing common ground, noisy signal, overloaded linkage. DHT11/DHT22 Showing NaNDATA pin, sensor type, pullup resistor, timing, and code.I2C, Power & Relays
I2C Device Not FoundSDA/SCL wiring, pullups, ESP32 pins, address scanner. LCD 16x2 Not DisplayingBlack boxes, contrast, 0x27/0x3F, LiquidCrystal_I2C. Relay Module Always OnActive-low trigger, NO/NC wiring, floating input, boot state. SIM800L Power TroubleshootingCurrent bursts, capacitor, antenna, SIM, and 2G availability. SIM800L No AT ResponseUART TX/RX, baud rate, line endings, ground, and power.Hub 2
PCB Design for Beginners
Learn schematic capture, component footprints, board layouts, and convert prototypes into custom PCBs.
Complete workflow from schematic and layout to Gerbers, BOM, and release package.
KiCad KiCad PCB Design Tutorial for BeginnersStep-by-step KiCad workflow from project setup to Gerber export.
Mistakes 10 Beginner PCB Design MistakesWrong footprints, weak power traces, skipped DRC, bad silkscreen, and messy release files.
Checklist Breadboard to PCB ChecklistValidate the circuit before converting jumper wires into hardware.
Thermal Thermal Management in PCB DesignManage heat dissipation, PCB thermal resistance, heavy copper, and hybrid cooling.
Starter Kit Electronics Starter Kit IndiaWhat students and makers should buy first, skip, and upgrade in India.
Hub 3
PCB Release Management
Prepare fabrication files, clean up BOMs, configure version control, and set up release packages.
A practical folder and naming system for source files, Gerbers, BOMs, firmware, test reports, and release records.
ReleasePCB Release Package ChecklistA step-by-step release pack for Gerbers, BOM, pick-and-place, assembly notes, firmware, and tests.
FabricationGerber File ManagementKeep fabrication packages, drill files, naming, dates, and release status clean before a manufacturer uses them.
RevisionsPCB Revision ControlHow to track board versions, design changes, BOM compatibility, firmware links, and production history.
ControlPCB Document ControlPrevent teams from building from obsolete schematics, Gerbers, BOMs, drawings, and release notes.
BOM ToolsElectronics BOM Management SoftwareWhat electronics teams need from BOM tools: alternates, lifecycle checks, supplier data, revisions, and approvals.
BOM RevisionsBOM Version ControlMatch BOM versions to PCB revisions, firmware releases, component alternates, and procurement decisions.
FirmwareFirmware Hardware Version ControlConnect firmware builds to PCB revisions, pin maps, bootloaders, calibration data, and release packages.
HandoffPCB Design Client Handoff ChecklistDeliver source files, fab files, BOMs, revision notes, and ownership details without creating confusion later.
Hub 4
Electronics Product Data Management
Establish engineering changes, workflows, lifecycle tracking, and product database record controls.
Bring PCB, BOM, firmware, ECO, production, support, and field feedback into one product record.
Engineering ChangeElectronics Change Order ECOControl hardware, BOM, firmware, approval, release, and production changes with a clear ECO workflow.
Software GuideElectronics PDM Software GuideWhat PDM should do for electronics teams before they outgrow folders, spreadsheets, and chat threads.
From guide to product
Connect your data workflow to PCBVault tools
Use our folder templates for immediate project organization, then route your team to PCB Vault Software or Electronics PDM options.
Free rescue pack
Keep the troubleshooting checklist beside your bench.
Get power, wiring, module isolation, buying, and breadboard-to-PCB checks in one printable pack.