Open source handheld ESPLAY V0.3 game console

The power supply part and buttons have been changed, the battery and speaker positions have been rearranged, and the 3.5 headphone jack has been removed. Verify that the basic functions are intact. The game has sound and the MP3 has no sound. I don’t know why. The total cost is probably less than a hundred yuan. The battery capacity is 450mah, which can be used for about two to three hours. Size 45*100*11mm.

Modified based on the ESPLAY open source project and has been verified. ESPlay Micro V2: https://www.makerfabs.com/esplay-micro-v2.html, project github address: https://github.com/pebri86/esplay-micro-firmware-collections

After making the board, it has been verified, and some minor problems have been corrected. The resistors and capacitors are mainly packaged in 0603. After the board is made and soldered, just short-circuit the jumpers. After the welding is completed, first program the bootloader, open flash_download_tools_v3.6.6.exe, select ESP32, then follow this screenshot to set the parameters, select the serial port (the CH340 serial port driver is self-provided), and then click download. There will be a prompt if successful. .

Finally, decompress the SD card compressed file and put it into the SD card.

 These two are game and MP3 firmware respectively. There are also firmwares from other masters that can be flashed. You can select the firmware by holding down the menu key when turning on the phone.

      At this point, install the casing and the ESPLAY is complete.

Here are some device links:

1. ILI9341SPI serial screen https://item.taobao.com/item.htm?spm=a1z09.2.0.0.50582e8d3yoCAq&id=45758568009&_u=hvihlagd04e
2. 6*6*5MM silent micro switch https://item.taobao. com/item.htm?spm=a1z09.2.0.0.50582e8d3yoCAq&id=522572685433&_u=hvihlag3266
3. 1510 small speaker https://item.taobao.com/item.htm?spm=a1z09.2.0.0.50582e8d3yoCAq&id=62 6703811850& _u=hvihlag445d
4 . 403040 lithium battery https://item.taobao.com/item.htm?spm=a1z09.2.0.0.50582e8d3yoCAq&id=602110158806&_u=hvihlag4d52

If the bootloader programming fails, first check whether the serial port is recognized, and then use the serial port assistant or arduino to check whether there is output. The new esp32 usually comes with at or other programs that will print the serial port. The baud rate is 15200.

2021-6-23 Shell has been uploaded

2021-6-30 The shell has been slightly optimized. The lack of sound in MP3 is due to the firmware. It can be solved by replacing other firmware, but others will not give me that firmware. This can also be solved by changing the R56 pull-down to the pull-up, but there will be a background noise.