Electronics Engineer Helper vs Paperflood

Digital toolbox for electronics engineers and electricians. Calculators and references for beginners and professionals — for work, study, DIY, and repair. Used by over 100,000 users. Completely ad-free. Included tools: • Datasheet search • Equivalent parts search (cross reference for transistors, diodes and ICs) • Resistor color and digit marking (4, 5 and 6 band color code; 2 symbols, 3/4 digit and EIA-96 code SMD resistors code) • Electronic schematic symbols (IEC 60617, IEEE 315 and GOST standards) • Pinouts of connectors and interfaces (USB, HDMI, DisplayPort, DVI, VGA, Thunderbolt, Apple Lightning and 30-pin, SATA, PCI Express and M.2, Ethernet RJ45 with PoE, RJ11/RJ14/RJ25, RS-232/422/485, IEEE 1394 FireWire, ATX, computer fans, SD card, audio jack, RCA, MIDI, XLR, PS/2, D-sub, SMEMA) • Pinouts of boards and microcontrollers (Raspberry Pi and Pico, Arduino, ESP32, ESP8266, STM32 Nucleo, Teensy, Orange Pi, RADXA Rock Pi, LubanCat, Flipper Zero, ATmega and ATtiny) • Ohm's law calculator • AWG converter (wire diameter, cross-section area, resistance and maximum current) • Resistor for LED • Voltage divider • Wheatstone bridge (output voltage or unknown resistance, current and power of every arm) • Capacitor code • Capacitor markings • Capacitor ESR tables • Frequency response curve calculation of passive filters (RC, RL, RLC, LC) • Inductor color code • Air-core coil calculator (inductance or number of turns of a single-layer solenoid) • Ideal transformer (winding turns, voltages and currents) • Linear current regulator • SMD packages list • Reactance • PCB trace resistance • Active, apparent and reactive power • RMS converter (peak, RMS and peak-to-peak values for seven waveform shapes) • 555 waveform generator • Operational amplifiers • RLC circuit • Number conversion • Unit converter • Cable voltage drop • Battery life (runtime of a battery pack, with discharge curve) • NTC thermistor resistance • Logic gates • RC circuit • Decibels calculator • 25-pair cable color code • Fuse color marking Additionally, by purchasing the PRO version of the app, you will get access to additional tools: • SMD components marking codes • Diodes color code (Pro Electron, JEDEC and JIS-C-7012 standards) • Linear voltage regulator • Resistor value to color or SMD code marking converter • Voltage rectifier • Series or parallel electrical components' connection calculator • Diode voltage drop • Minimum PCB trace width • Analog to digital conversion • Attenuators • 4-20 mA signal converter • Thermocouple calculator • Resistance thermometer • Buck switching voltage regulator • Wire resistance • Zener diode regulator (Zener diode and series resistor selection from a catalogue of 438 parts) • Load cell (bridge output voltage to weight, force, pressure or torque) • BJT voltage divider biasing • Transformer turns per volt (from core area, flux density and frequency) • Junction temperature (with or without a heatsink, power derating curve) • Solar string dimensioning (minimum voltage and current ratings for a PV array) • Solar cable and fuse selection (NEC and IEC rules) • 555 astable generator with variable duty cycle • NTC thermistor in a voltage divider and with an ADC input Privacy Policy: https://www.eehelper.app/ios/privacy/ Terms of Use: https://www.eehelper.app/ios/terms/

Introducing Paperflood AI-powered document scanning. 5 free scans/month. Full privacy — everything on-device. Easily capture and extract the information you need — straight from images of receipts, invoices, letters, or any other printed documents. Paperflood combines powerful on-device OCR (Optical Character Recognition) with AI to help you intelligently extract exactly the data you're looking for — quickly, privately, and efficiently. # Key Features: Take photos or upload from your gallery with ease Automatic text recognition using advanced OCR Local OCR server support — send images via drag and drop (https://www.paperflood.com/drag-and-drop) or http requests from anywhere to the device and trigger automatic extraction remotely AI-powered keyword extraction: Define keywords and let the app find the relevant information for you Custom keyword templates — Reuse common extractions easily Flexible export options: Export extracted data as JSON, Excel, or CSV Send extracted data to your custom server or share it manually No account required — Start using immediately # Privacy First Your data stays on your device. Both OCR and AI run entirely offline — no text, images, or extracted data ever leave your phone. # Fair and Simple Pricing Get 5 scans per month for free — no account or subscription required. Need more? Unlock unlimited scans for just €0.99/month. # Built for Individuals and Enterprises Whether you're a freelancer, a small business owner, or part of a larger organization — Paperflood adapts to your workflow. In enterprise use cases, Paperflood can help fully automate the document scanning and data extraction process. With custom keyword templates, OCR server integration, and automatic export, only a photo needs to be taken — the rest happens instantly and locally. Ideal for logistics, accounting, HR, and any operation that relies on high-volume data entry from paper sources. No more manual typing — just scan, extract, and send. # Terms of Use: User Agreement: https://www.paperflood.com/v1/user-agreement Privacy Policy: https://www.paperflood.com/v1/privacy-policy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/