μRetro game console with CPU on fake μSD cards

All is now on github https://github.com/bobricius/uRetro enjoy ;)

It is small joke ;) on card is also ADS1015 as ADC to read buttons ;)

Hi, Any idea about cool name for this console ?????

(12.8 x 30.6mm) 

Main changes:

• 2X parallel micro SD slots
  - 1. card MCU
  - 2. card SENSOR
  - you can also use 2x MCU and communicate over I2C
  - no care where is MCU or sensor, they are parallel
• Display is direct on board not on module
  - WHY? until January I ordered on 4x on ebay by picture, I received 4x different display, with different pinout
  - you can put card from top side what is more practical
• I will focus to keep all compatible with display module version, which is more DIY friendly
• I think about microUSB for charging and add option for lion battery instead CR2032

This is preview for board with 2 micro SD slot.

After thinking and hearing community voices, kill 2 wires with USB is useless.

So here is alternative with PCB USB (or metallic but this make board little longer).

This require 0.6mm board, maybe this need little sticker to 0.8mm :)

I got a tip from Mr. Vlk to try Microcontrollers with native USB and read buttons via I2C.

Also Attiny85 can be reprogrammed via USB with digispark bootloader !

My fake Micro SD give me 8 wires (list only, not exact pinout):

• GND
• VCC
• SDA
• SCL
• SPEAKER
• Analog 1
• Analog 2
• Analog 3

Maybe in next version I can try this pinout:

• GND
• VCC
• SDA
• SCL
• SPEAKER
• Analog 1
• D -
• D +

With this I can expand offer of usable controllers with etc. SAMD21 or STM32

SAMD21 add now very popular Adafruit circuitpython programming feature ;)

What do you think about it?

For better dimension imagination ...

Also second envelope is full boards from OSHpark

What is new?

• CPU reversed for deeper CPU insert
• Card with Atmega328 for more hardcore games etc ARDUBOY emulation

BONUS

• Attiny85 breadboard adapter / programmer

Good, news, I can work on upgrade.

I am just received new main boards from PCBWAY

What is new?

• Card is more inserted and not stick up
• +1 button ... 6 in total
• power buton is moved to back (needed space for button)
• all is prepared for port ARDUBOY games to Atmega328 card