CompletedESPboy:Kit v3.1 (tested)
STDESPboy:Kit v3.1 (tested)
License
:CC BY-NC-SA 3.0
Description
ESPboy:Kit schematic v3.1
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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.
This is a simplified version of the original ESPboy1/ESPboy2 with all the through-holes and cheap parts, designed to help beginners make their own ESPboy!
ESPboy easy DIY version has a slightly simplified circuit compared to ESPboy1/ESPboy2, but is 99.9% compatible with them, however this circuit uses large through-holes components which are very easy to solder, especially for beginners and almost impossible to mistake.
The screen brightness control is removed, a buzzer is put in place of the speaker, the protection on the LEDs is removed, but a volume control is added.
Overall it is a complete ESPboy with an expansion connector, where the AppStore(available directly from the device)/WebAppStore and all ESPboy released software and hardware modules should work.
Additionaly to BOM please consider following parts:
- Battery holder for 3xAAA
 - Volume regulator B103 3pin!
 - LED APA106 5mm!
 - WeMos D1 mini ESP8266 or cheaper clone of ESP8266 in WeMos D1 form factor
 - LCD TFT 1.44'' 128x128 ST7735 BLUE PCB
 - Expansion header 2x10p 90grad
 
Try AppStores:
- ESPboy WebAppStore (use Chrome browser)
 - ESPboy AppStore (build in software, to activate -- press A button and switchOn ESPboy keeping pressed A. Follow the instructions. )
 
Use following IDEs for your projects:
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:
- ESPboy:Kit - assembly instruction video
 - Support ESPboy project
 - Buy at tindie.com
 - Buy at aliexpress.com
 - ESPboy:DIY PCB and schematic
 - ESPboy:Breadboard schematic
 - ESPboy:Kit PCB and schematic
 - WebAppStore
 - Forum
 - Discord
 - Software
 - YouTube
 - Retr0Rob's review
 - Hackaday development log
 - Hackster.io review
 - OpenHardware certification
 - OSHWA certification
 
Design Drawing
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