Electronics Tools: Caldroid 1.6.13

Vegaapp – Freeware – Android

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Caldroid is a comprehensive tool designed to assist students and electronics enthusiasts in constructing and analyzing electronic circuits. It incorporates a wide range of calculation tools frequently used in the field, along with technical documentation valuable for engineering students, electrical engineers, and hobbyists.

The application features an extensive set of calculators, including:

<ul>
<li>Color code decoders for resistors (3-6 bands)</li>
<li>Resistor color code lookup for specific values</li>
<li>SMD resistor code decoders</li>
<li>Resistor value identification from SMD codes</li>
<li>Ohm's Law calculator</li>
<li>Inductor color code decoders (4-5 bands)</li>
<li>Inductor color code lookup</li>
<li>Capacitor color code decoders</li>
<li>Capacitor value identification from codes</li>
<li>Series and parallel combinations of inductors, capacitors, and resistors for multiple values</li>
<li>Calculations of capacitive and inductive reactance</li>
<li>Series and parallel RLC resonance analysis</li>
<li>Resistive voltage dividers</li>
<li>Resistive current dividers</li>
<li>Y-Δ (Star-Delta) transformation and reverse</li>
<li>Conversions between numerical scales (k, M, m, etc.)</li>
<li>Number base conversions (binary, quaternary, octal, decimal, hexadecimal)</li>
<li>SI unit conversions across various domains such as pressure, data size, area, length, volume, angles, magnetic flux, magnetic fields, mass, energy, time, frequency, velocity, and temperature</li>
<li>Internal and external PCB trace width calculations</li>
<li>Circuit design for signal conditioning using operational amplifiers; including sample circuits ready for implementation</li>
<li>555 timer circuit configurations (frequency, duty cycle, monostable and astable modes)</li>
<li>Resistor calculations for voltage regulators (e.g., LM317, LM1117, LM137, LM337, TL431 precision regulator) standards</li>
<li>Operational amplifier configurations (non-inverting, inverting, instrumentation amplifier, follower, differentiator, integrator, triangle oscillator)</li>
<li>Design of low-frequency transformers; including wire gauge calculations, turns ratio, and core types (E-shaped and toroidal)</li>
<li>Complex power analysis (AC/DC/three-phase; active, reactive, apparent power; power factor)</li>
<li>BJT transistor analysis (biasing methods such as PDT biasing, maximum output swing, fixed bias; collector feedback; Q-point plotting)</li>
<li>FET and MOSFET operations in various configurations (fixed bias, auto-bias with or without drain resistor), both incremental and decremental</li>
<li>Zener regulator analysis and design—approximate and real models</li>
<li>Analog-to-digital conversion calculations</li>
<li>Diverse resistor configurations for LEDs of different colors and series arrangements</li>
</ul>

The application supports a wide array of hardware interfaces and components:

<ul>
<li>Microcontrollers: Arduino Uno, Leonardo, 101, Micro, Nano, Pro Mini, Mega 2560</li>
<li>Display modules: LCD 2x16, 4x20 Lm016; 7-segment displays (common anode/cathode); 7x5 and 8x8 LED matrices</li>
<li>Voltage regulators: LM78xx series, LM79xx series, LM1117, LM317 series; LM338; LM137 series</li>
<li>Wireless modules: ESP-01/ESP-07/ESP-12E/ESP-12F/ESP32 variants including Wrover and Pico kit; Wemos D1 Mini; Bluetooth HC-05/HC-06</li>
<li>Sensors and connectors: RJ-45; ATX power supply; Dell power supply</li>
<li>Microcontrollers: STM32F103xx series; STM32F303; STM32F407VET6</li>
<li>Operational amplifiers: LM324; 741; TL081/TL082; LM358; LM311/LM339; LM380; LM386</li>
<li>MOTORS: Nema 17 stepper motor</li>
</ul>

The included data tables and references encompass:

<ul>
<li>A dictionary of electronic concepts and symbols</li>
<li>Voltage levels for CMOS, TTL, LVTTL, LVCMOS standards</li>
<li>Color code tables for resistors and characteristic values for capacitors and inductors</li>
<li>Theoretical foundations like Ohm’s law and SI units across domains such as pressure, dimensions of SMD packages for capacitors and resistors</li>
<li>SMD resistor code analysis tables and size specifications for various SMD components</li>
<ul>

The software also integrates plugins facilitating:

<ul>
<li>TCP/IP client connectivity</li>
<li>Bluetooth serial communication integration</li>
<li>A microcontroller database covering PICs, AVRs, STM series microcontrollers</li></ul>

If users find this tool valuable in their work or studies, they are encouraged to rate it positively and consider purchasing the PRO version to support ongoing development. The Caldroid PRO can be found at:

<a href="https://play.google.com/store/apps/details?id=com.Electronic.App.pro">https://play.google.com/store/apps/details?id=com.Electronic.App.pro</a>

For frequently asked questions and a comprehensive change log reflecting updates between versions, please visit <a href="https://caldroid.blogspot.com/">https://caldroid.blogspot.com/</a>.

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