Retro games, IoT, STEM, education and fun

open source, portable, modular, Arduino IDE compatible

for IT geeks, retro game fans, makers

[ explore ] [ create ] [ learn ] [ code ] [ play ]

with AppStore and community support

ESPboy - DIY look and spirit for $75

The basic device without additional modules

Secure PayPal payment for assembled and tested device, loaded with LGE games and AppStore, ready to play, but need to screw the casing panels to feel the DIY spirit. Payment includes a logistics fee. Shipment within 3 days provided with tracking number. Feel free to ask questions: discord chat, project forum or e-mail.

ESPboy2 - improved and glamour for $95

The basic device without additional modules

Secure PayPal payment for fully assembled and tested device, loaded with LGE games and AppStore, ready to play. Payment includes a logistics fee. Shipment within 3 days provided with tracking number. Feel free to ask questions: discord chat, project forum or e-mail.



try WebAppStore using Chrome browser and then AppStore on your ESPboy device connecting to WiFi with a huge quantity of games and apps


full keyboard, weather station, MP3 player, FM radio, LORA messenger, GSM phone, GPS navigator, DAC player, and more and your own...


Little Game Engine web IDE, ZX spectrum 48k, GameBoy, Chip8/Schip, Arduboy, Gamebuino-META, ANARCH - 3D Doom-like game.



WiFi attacks, BadUSB, RFID/NFC, SUB-1Ghz transceiver, iButton, InfraRed


Arduino IDE, PlatformIO, espressif SDK, micropython, lua, basic, javascript, visuino, fl-prog...



i2c, SPI, UART, ADC, i2s, LED out, MCP23017 GPIOs


ESP8266, 80/160Mhz, 4/8Mb, WiFi, LCD 128х128, LCD brightness DAC, RGBled, HQspeaker, 8 buttons, 600mAh battery, 30x70х17mm

Have fun with the ESPboy! :)

ESPboy2 - improved and glamour

ESPboy - DIY look and spirit


What to do with ESPboy

Explore the Open Hardware and Software

Make hardware research, understand the schematic, and improve it. Use as a platform for fast prototyping.

Rapid prototyping

With ESPboy you have everything you need to quickly prototype your idea

100% Arduino IDE and Arduino libraries compatible, display for the UI, buttons to control, speaker and RGB led for alarming and indication, WiFi for communication, battery for standalone operation, extension port for connecting external sensors or servos, compact size for portable use

Code Arduino IDE, VS code/PlatformIO, MicroPython, LUA, Basic, Scratch

Learn to code. You don’t need to make low-level code, just take the right library from the huge Arduino community. Check all the ESPboy open-source Arduino software. Write your own applications easily in standard IDEs using a wide range of compatible libraries.

Visual programming & firmware constructors

If you are new in coding, but full of ideas, try to draw your first program or use an online program constructor just selecting options or moving blocks:, visuino, fl-prog, wifi-iot,

Try online AppStore and WebAppStore

Update the firmware in a minute, using WiFi and selecting the App from the list right on the ESPboy. No programming, buggy libraries, compilation, fighting the bugs, and wires.

With the WebAppStore, you can upload apps to your ESPboy using the Chrome browser.

Indie neo-retro games rapid development

Make your first game in a few hours using online web Little Game Engine IDE with the help of community, documentation, and samples.

Play retro old games youth of your parents, touch the most famous platforms of the past, learn how emulation works ZX-spectrum and GameBoy.

Explore the world of Arduboy, Gamebuino META, CHIP8/SCHIP: platforms, community, and games.

Use extension connector & gadget modules

All useful interfaces on the expansion connector: I2C, SPI, I2S, UART, ADC, few MCU GPIOs and additional GPIOs of the MCP23017 GPIO expander.

Connect and control anything you want. The ideal prototyping mobile platform to test and improve your digital ideas.

Turn your ESPboy to the fully functional gadget in a minute with a standard expansion module or make your unique. MP3 player, GSM phone, FM radio, GPS navigator, LORA messenger, DAC AY38910 player, radiation meter, weather station. Play with it, understand the hardware, software, protocols, interfaces, create another one.

Do pen-testing and offensive security

Research the protocols and make penetration tests of communication networks and security systems. WiFi attacks, storing your office cards RFID/NFC with it's reading and emulation, storing iButton keys, remote control of the 433Mhz barriers, and garage doors, use as a universal IR remote control all of your devices, use as U2F security token and play with BAD-USB payloads.

Learn Internet of things, online services & mobile phone integration. Make your home smart

Learn the world of IoT. Connect the home automation sensors and actuators. Control them all or make the ESPboy one of them. Using WiFi onboard, get the data from the net, provide remote wireless control and monitoring of your home, send telemetry data to the online databases and services like,,,

Take control of your ESPboy and other devices, connected to it with your smartphone. We are supporting and


There is WiFi onboard. But connecting the attacheble modules to expansion connector, you can use any trasiever: HC-11 for UART 433Mhz (excellent to control your robot or rover), CC1101 for 315/433/868Mhz (for controlling garage doors and barriers), NRF24le01 for 2.4Ghz, HC-06 for bluetooth, LORA modules and so on. The great thing that there are a huge quantity to open-source libraries for Arduino IDE so you can compile the included example and test the module just after the connection. No need to learn datasheet and then do low-level programming.


  • ESP8266 microcontroller (80/160Mhz 32bit Tensilica Xtensa CPU and 4-16Mb RAM)

  • WiFi onboard

  • 1,44'' TFT 128х128 color display

  • 8 buttons

  • MCP23017 GPIO extender

  • MCP4725 DAC to smoth control TFT backlit

  • RGB WS2812B LED

  • High-quality speaker

  • 20pin extension header (DC, I2C, SPI, UART, ADC, MCU & MCP23017 GPIOs)

  • 450mAh battery keeping high run for about 8 hours and years in sleeping mode

Modules and Software

Connect the original module to the ESPboy's extension header, update the software through WiFi, and get the fully functional gadgets in a minute. Or build your own, explore, how it works.

Already tested modules

433mhz sub-1Ghz inspector, GSM phone, GPS navigator, LORA messenger, Weather station, MP3 player, DAC player, IR remote, FM radio, Full layout keyboard, RFID/NFC reader-writer, CW Radio beacon, Radiation meter, Digital thermometer, Digital ruler, Pulsometer

Under development modules

Air quality monitor, Health monitor, OBDII car scanner, iButton reader/writer/emulator, Signal generator, Energy monitor, Arduino firmware uploader, Bad USB payloads, Оscilloscope, Thermovisor, photo camera


WiFi deauther, WiFi analyzer, Pinger, Packet sniffer, PT3 chiptune player, CHIP8/SCHIP emulator, ZX Spectrum 48k emulator, Little Game Engine, Arduboy2 lib port + about 100 games already ported, GameBoy emulator, ANARCH - 3D Doom like game, Gamebuino META lib port + about 20 games already ported, ESP8266AUDIO library mod to utilize internal ESPboy speaker

IoT and online services

The core of ESPboy is ESP8266 MCU widely used in IoT and supported by all of the infrastructure

Code, connect and explore

Arduino IDE compatible and all its libraries. More over, there are wide range of supported development platforms

Demo videos

Check ESPboy in action on Youtube :)


Make yourself the ESPboy multigadget in 30 minutes

ANARCH - 3D Doom-like game

Sinclair ZX Spectrum emulator

Gamebuino META compatible

There is ported Gamebuino meta library specially for ESPboy. Now it's easy to migrate any of 50 excellent games from amazing neo retro Gamebuino META platform! About 20 games are ready to play right now at ESPboy and you can port any of them in a few hours.

Arduboy platform compatible

There is ported Arduboy2 lib specially for ESPboy. Now it's easy to migrate any of 200 excellent games from amazing neo retro Arduboy platform! About 100 games are ready to play right now at ESPboy and you can port any of them in a few hours.

Little Game Engine

To play Little Game Engine games online, choose the game, then in LGE IDE press "compile" and "play" icon. You can check the source code of these games, learn LGE C-like script and then program your own first game in a few hours! With the help of ESPboy community in forum and chat.

To try game online: select one below, press "Compile" button and then "Play" icon

CHIP8/SCHIP emulator

The heritage interpreted programming language for the the COSMAC VIP and Telmac 1800 8-bit microcomputers in the mid-1970s . Play old games and try to make you own to win Octo Jam

Saint-Petersburg © Roman S.