ElectroDroid Pro v4.0 APK

Google Play
ElectroDroid Pro 
Powerful collection of electronics tools and reference.A must for any enthusiast
This is the Donate version of ElectroDroid (without ads)
ElectroDroid is a simple and powerful collection of electronics tools and reference;

Features:
Resistor color code decoder (3-6 bands, with inverse look-up);
Inductor color code decoder;
Ohm’s law calculator;
Reactance calculator;
Voltage divider;
Resistor ratio, value/series/parallel;
Capacitor charge calculation;
Operational amplifier;
LED resistor calculator;
LM317 calculator;
Heat dissipation;
Battery Life calculator;
Inductor design tool;
Voltage Drop calculator;
PCB Trace Width calculator;
Simple Filters calculator;
NE555 astable calculator;
Port pin-out (USB, Serial, Parallel, Ethernet, SCART, DVI, HDMI, S-Video, VGA, FireWire, Jack, XLR, RCA, DMX, ATX, Molex, EIDE, SATA);
Resources (Resistivity table; Table of standard resistors and capacitors; Capacitor marking codes; AWG and SWG Wire size; Ampacity Table; Symbols and Abbreviations; Circuit Schematic Symbols; SI Units prefixes; Battery info; Boolean logic gate and algebra Theorems; 7400 info and pinout; ASCII code);
Full support for EIA resistor series for all caluculators;

What's new
Material design;
Added more formulas, increased performance [Pro];
New Pinouts: Raspberry Pi2, Arduino Nano, JTAG/SWD;
New Resources: ISM Radio frequencues, added mm2 in Ampacity table;
improved RTL support;
translation updates, added Uyghur;
bugs fix;
Required Android O/S : 1.6+