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Description of PROTO - circuit simulator
Screenshots of PROTO - circuit simulator
  • PROTO - circuit simulator
  • PROTO - circuit simulator
  • PROTO - circuit simulator
  • PROTO - circuit simulator
  • PROTO - circuit simulator
  • PROTO - circuit simulator
  • PROTO - circuit simulator
  • PROTO - circuit simulator
  • PROTO - circuit simulator
Description of PROTO - circuit simulator (from google play)

Are you looking for tools like Multisim, SPICE, LTspice, Proteus or Altium? That's great! PROTO is an real time electronic circuit simulator which means you are able to setup a circuit with various components and simulate behaviour of the electronic circuit.
During simulation you can check voltages, currents and many other variables. Check signals on multichannel oscilioscope and tune your circuit in real time! Our app can greatly help with your Raspberry Pi, Arduino or ESP32 project. You can also use PROTO as logic circuit simulator and perform digital electronic analysis!

* You can report an issue or make component request at https://github.com/Proto-App/Proto-Android/issues *

Features:
+ Animations of voltage values and current flows
+ Adjusts circuit parameters (like voltage, current and other)
+ Four-channel oscilloscope
+ Single play/pause button to control simulation
+ Copy electronic components
+ Learn about electronic circuits by examples in app
+ Share circuit with friends
+ Themes (Dark, Light, Ocean, Solarized)
+ PNG, JPG, PDF circuit export
+ Export workspace
+ Video tutorials about electronics
+ Arduino support in future

Components:
+ DC, AC, Square, Trinagle, Sawtooth, Pulse, Noise voltage source
+ Current source
+ Resistor
+ Potentiometer
+ Capacitor
+ Polarized capacitor
+ Inductor
+ Transformer
+ Diode (rectifying diode, LED, Zener, Schottky)
+ Transistor (NPN, PNP, N and P channel Mosfet)
+ Switches (SPST, Relay)
+ Bulb
+ Operational amplifier
+ Timer 555 (NE555)
+ Digital Gates (AND, NAND, OR, XOR, NOR, NXOR, Inverter)
+ Voltmeter
+ Ammeter
+ Fuse
+ Photoresistor (uses phone light sensor)
+ Analog-to-digital converter (ADC)
+ Accelerometer (uses phone accelerometer sensor)
+ FM source
+ Logic Input
+ Memristor
+ Logic output
+ Probe
+ Voltage rail

Analog Pack:
+ Tunnel diode
+ Varactor
+ NTC Thermistor
+ Center tapped transformer
+ Schmitt trigger
+ Schmitt trigger (inverting)
+ Solar cell
+ TRIAC
+ DIAC
+ Thyristor
+ Triode
+ Darlington NPN
+ Darlington PNP
+ Analog SPST
+ Analog SPDT
Digital Pack:
+ Adder
+ Counter
+ Latch
+ PISO Register
+ SIPO Register
+ Seven segment decoder
+ Sequence generator
+ D Flip-flop
+ T Flip-flop
+ JK Flip-flop
+ Multiplexer
+ Demultiplexer
+ Voltage controlled current source (VCCS)
+ Voltage controlled voltage source (VCVS)
+ Current controlled current source (CCCS)
+ Current controlled voltage source (CCVS)
+ Optocoupler

Misc Pack:
+ Wobbulator
+ AM Source
+ SPDT Switch
+ Digital to analog converter (DAC)
+ Antenna
+ Spark gap
+ LED Bar
+ 7 segment LED
+ RGB LED
+ Ohmmeter
+ Audio input
+ Microphone
+ Device battery
+ DC Motor
+ 14 segment LED
+ Diode bridge
+ Crystal
+ Voltage regulators (78xx family)
+ TL431
+ Buzzer
+ Frequency meter

JavaScrip Pack:
+ Write code
+ JavaScript interpreter (ES2020 class)
+ Access to IC inputs in code
+ Access to IC outputs in code
+ Four custom ICs

7400 TTL Pack:
+ 7404 - hex inverter
+ 7410 - triple 3-input NAND Gate
+ 7414 - hex Schmitt-trigger inverter
+ 7432 - quadruple 2-input OR gate
+ 7440 - dual 4-input NAND buffer
+ 7485 - 4-bit magnitude comparator
+ 7493 - binary counter
+ 744075 - triple 3-input OR gate
+ 741G32 - single 2-input OR gate
+ 741G86 - single 2-input XOR gate

4000 CMOS Pack:
+ 4000 - dual 3-input NOR gate and inverter.
+ 4001 - quad 2-input NOR gate.
+ 4002 - dual 4-input NOR gate.
+ 4011 - quad 2-input NAND gate.
+ 4016 - quad bilateral switch.
+ 4017 - 5-stage Johnson decade counter.
+ 4023 - triple 3-input NAND gate.
+ 4025 - triple 3-input NOR gate.
+ 4081 - quad 2-input AND gate.
+ 4511 - BCD to 7-segment decoder.

Sensors pack:
+ Pressure
+ Gyroscope
+ Light
+ Magnetic field
+ Proximity
+ Temperature
+ Humidity

Version history PROTO - circuit simulator
New in P R O T O 1.30.0
> New components [TTL PACK]:
⋄ 7402 - quad 2-input NOR gate
⋄ 7425 - dual 4-input NOR gate with strobe
⋄ 7442 - BCD to decimal decoder
⋄ 7486 - quad 2-input XOR gate

> [JavaScript] Now you can enable or disable output terminal and set custom name for input and output terminals
> New free component: AD633 - four-quadrant, analog multiplier
> Push switch type (NO - normally open, NC - normally closed)
New in P R O T O 1.28.0
> Add Italian language
> [JavaScript] New example with accelerometer sensor
> Fix Audio input crashes
> Fix share circuit and workspace links on Android 12
> Fix Android 14 import bug: https://github.com/Proto-App/Proto-Android/issues/329
> Fix CMOS 4017 and TTL 7493 - https://github.com/Proto-App/Proto-Android/issues/317
New in P R O T O 1.27.0
> Change navigation in PROTO
> New components [TTL PACK]:
⋄ 7411 - triple 3-input AND gate
⋄ 7421 - dual 4-input AND gate
⋄ 7430 - 8-input NOR gate

> New components [CMOS PACK]:
⋄ 4068 - 8-input NAND gate
⋄ 4071 - quad 2-input OR gate
⋄ 4072 - dual 4-input OR gate
⋄ 4078 - 8-input NOR gate

> [JavaScript] New feature - now you can read sensors data in code.
> Improved app startup time and size.
> Increase zoom area - https://github.com/Proto-App/Proto-Android/issues/314
New in P R O T O 1.26.0
> Now you can delete all workspace items
> New FREE component: Operation amplifier (Rails version)
> Unlocked component [TTL Pack]: 7001 - quad 2-input NAND gate
> Unlocked component [CMOS Pack]: 4001 - quad 2-input NOR gate
> More simulation space (+20%)
> Implement frequency less than 1Hz - https://github.com/Proto-App/Proto-Android/issues/297
New in P R O T O 1.25.0
> SEARCH field - Now you can use search field to find circuits in "Examples" tab
> New components [TTL Pack]:
7409 - quadruple 2-input AND gate
7427 - triple 3-input NOR gate
> New components [CMOS Pack]:
4019 - quad AND/OR select gate
4028 - BCD to decimal decoder
> Next release will require Android 6 or higher
> New examples: Dual H bridge and 74LS00, 74LS02, 74LS04, 74LS08, 74LS32 gates
> Fix reload fab button is not discharging capacitor
> Fix missing padding on some devices
New in P R O T O 1.24.0
> HELP SECTION
You can find video tutorials about PROTO in HELP tab. Do you think that something is missing or maybe you have some great idea about new tutorial? Please let us know!

> Improved message when shared item is not available anymore
> Improved behavior of search component text field
New in P R O T O 1.23.0
> New component: 7420 - dual 4-input NAND gate. [TTL PACK]
> New component: 4030 - quad 2-input XOR gate. [CMOS PACK]
> New examples: Detector, CMOS Inverter, Colpitts oscillator, Spike generator
> Fix user workspace crash
> Fix crash during orientation change
> Fix share first time import
New in P R O T O 1.22.2
> Settings - try following options:
- autosave (every 3 minutes)
- fullscreen simulation
- choose supported language
- default timestep
- default theme
> New component: 7401 - quad 2-input NAND gate. [TTL PACK]
> New component: 4012 - dual 4-input NAND gate. [CMOS PACK]
> Fix script IC example (Pulse)
> Fix Settings screen crash
New in P R O T O 1.21.0
- New component: Varistor (MOV) [ANALOG PACK]
- WORKSPACE EXPORT - now you can export whole workspace.
- Change app language from system settings (Android 13)
- Fix copy in script ICs
New in P R O T O 1.20.0
NEW ADDON: JAVASCRIPT PACK - write JavaScript code in custom integrated circuit.
- use simulation time step
- access to intputs/outputs
- use all JavaScript features like loops, if conditions and more
- built-in keywords and code snippets
New in P R O T O 1.18.0
- New addon - 4000 CMOS Pack - Find 4000 family chips like: 4000, 4001, 4002, 4011, 4016, 4017, 4023, 4025, 4081, 4511
- Current source supports uA and nA.
New in P R O T O 1.17.0
- New addon - 4000 CMOS Pack - Find 4000 family chips like: 4000, 4001, 4002, 4011, 4016, 4017, 4023, 4025, 4081, 4511
- Current source supports uA and nA.
New in P R O T O 1.16.1
- Standard values: check standard values for resistance, capacitance and inductance.
- New addon - 7400 TTL Pack - Find 7400 family chips like: 7404, 7410, 7414, 7432, 7440, 7485, 7493, 744075, 741G32, 741G86
- Fixed SPDT output issue: https://github.com/Proto-App/Proto-Android/issues/194
- Fixed Android 5 crash during simulation
New in P R O T O 1.14.0
- New free component: Voltage rail
- New component: Frequency meter [MISC PACK]
- New component: Optocoupler [ANALOG PACK]
- New component: Voltage controlled voltage source (VCVS)[ANALOG PACK]
- New component: Current controlled voltage source (CCVS)[ANALOG PACK]
- New component: Current controlled current source (CCCS)[ANALOG PACK]
New in P R O T O 1.13.1
- Add LOCK button. You can lock each component on board. Lock mode prevents from switching, dragging, rotating or flipping.
- New component: Voltage controlled current source (VCCS) [ANALOG PACK]
- Add options to export whole circuit or only visible screen area to PNG, JPG or PDF file.
- Operation amplifier can be flipped now.
New in P R O T O 1.11.0
- New component: TL431 [MISC PACK]
- Add average, rms, p-p, min, max in Voltmeter and Ammeter -> https://github.com/Proto-App/Proto-Android/issues/151
- Check out 20 new examples! Thank you for all contributors: Awen2345, YukarinnAM, Sven130889!
- Fix wrong 7-segment decoder output -> https://github.com/Proto-App/Proto-Android/issues/161
New in P R O T O 1.9.1
- Time label on X axis
- New component: Thyristor [ANALOG PACK]
- New component: 14 segment LED [MISC PACK]
- LED voltage can be configured
- Power can be visualized on scope!
- New examples
- German language
- Bug fixes
New in P R O T O 1.7.0
⋄ Export visible circuit area to JPG, PNG or PDF file!
⋄ New component: Audio Input [MISC PACK]
⋄ New component: Microphone [MISC PACK]
⋄ New component: Device Battery [MISC PACK]
⋄ New component: DIAC [ANALOG PACK]
⋄ New component: TRIAC [ANALOG PACK]
⋄ New component: Inverting Schmitt trigger [ANALOG PACK]
⋄ Add Spanish language
⋄ Add Portuguese language
New in P R O T O 1.6.0
⋄ Great news, there is bigger circuit space available for all users!
⋄ Now you can add custom name in each component!
⋄ Check out Toggle button, it is available for all switches and logic input and greatly improves user experience!
⋄ New free components: NXOR Gate and Logic output
⋄ New components: SIPO Register and Demultiplexer [DIGITAL PACK]
⋄ New component: Ohmmeter [MISC PACK]
New in P R O T O 1.5.0
⋄ New addon: ANALOG PACK! Check out tunnel diode, solar cell, NTC thermistor and more.
⋄ We start translating PROTO. First language ready to use is Polish, you can expect Russian, German, Spanish in next releases!
New in P R O T O 1.3.0
⋄ Do you want to share your ideas with others? Great! Find share button on existing circuits and send them to your friends by SMS, mail or favorite chat app.
⋄ New component: LED bar [MISC PACK]
⋄ Fix beta update issue (https://github.com/Proto-App/Proto-Android/issues/100)
New in P R O T O 0.33.0
⋄ Great news! Now you can copy one of the circuits from "Examples" tab to your workspace!
⋄ New circuit: Diode rectifier
⋄ Power setting is available for Bulb component (https://github.com/Proto-App/Proto-Android/issues/67)
⋄ Fix wrong unit on scope Y axis (https://github.com/Proto-App/Proto-Android/issues/68)
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