ESPboy DIY schematic v4.3

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www.espboy.com

ESPboy STEM is an indie project with unique handmade gadgets designed to help enthusiasts learn/improve IT/IoT skills and promote engineering creativity. 
An interesting hobby for you and your children, an opportunity to learn programming, neo-retro games development, MCU and IoT technology, electronics and digital device creation.

ESPboy highlights:

• Open source, open hardware, portable, modular
• Empowered with AppStore/WebAppStore and community support
• WiFi onboard
• 100% Arduino IDE and VS-Code+PlatformIO compatible
• Uses ESP8266 MCU (Xtensa Tensilica 32bit core, 80/160mHz, 4Mb) and has built-in WiFi, 8 buttons, RGB led, high-quality speaker, extension header

The parts additional to BOM:

• Speaker Blackbery z10
• Display TFT 1.44’’ 128x128 ST7735 
• MCU WeMos D1 mini V3.0
• TP4056 with protection (don't forget to change R3 resistor to 10kOhm) 
• Battery 303040
• 4 items - brass spacers M2x17mm
• 8 items - screw M2x4mm
• 6 items - screws for buttons M2.5x8mm 
• 6 items - nuts M2.5
• 6 items - springs  0.3mm  D4mm L5mm 

Check emulated platforms, games and software:

• Arduboy
• Gamebuino META
• Pokitto
• Game Boy
• ZX Spectrum 48K
• CHIP8/SCHIP
• SegaDreamcast VMU

Note the software and the description of the optional expansion attacheble modules for ESPboy

• GSM phone
• GPS navigator
• Meteostation
• LORA messenger
• RFID/NFC reader/repeater
• Sub1Ghz inspector
• Sub1Ghz scanner
• MOD/S3M/XM/IT player
• AY38910/12 Yamaha chip player
• Web radio
• FM radio
• Walkie-talkie
• Meccano rover
• Flower watering
• Ice fishing automation
• Volt/Amper meter
• CW radio beacon
• RSS reader
• Digital ruler
• Pinger
• Digital thermometer
• Heart rate meter
• WiFi analizer
• WiFi sniffer
• WiFi packet monitor
• WiFi pinger
• WiFi deauther
• IR blaster
• Geiger counter
• I2C scanner
• MP3 player
• ... more modules design in progress :)

Thanks to @MLXXXp for helping me design and the whole community for their support and inspiration :)

Have fun!

Regards, Roman S. 

Relevant ESPboy links:

- Support the ESPboy project, buy ESPboy2
- DIY ESPboy1
- DIY breadboard
- DIY easy ESPboy
- WebAppStore
- Forum
- Discord
- Twitter
- Software
- YouTube 
- Retr0Rob's review
- Hackaday development log
- Hackster.io review
- Tindie
- OpenHardware certification
- OSHWA certification