PandaM4 is designed to be a drop-in replacement upgrade board for the Ender 3 printers by Creality,use ESP32 as it MCU.
      Not only fast CPU speed,large memory than all the STM32bit boards,you can upload file, firmware over the air and more possible.
 
Powerful:
it has larger memory and more powerful than normal 32bit motherboard.Two 240MHz MCU,4MB memory
the speed of uploading gcode file is 10 times faster than it as a wifi module.
play music(mp3/wav) when printer boot or printing finished...
Easy to use:
upload marlin firmware through wifi with browser.
upload gcode file, configure printer and control printer wireless with browser.
 
Specifications  
Two 32-bit MCU ,240MHz，520 KBytes SRAM，4M Bytes Flash memory
WiFi |  802.11 b/g/n/d/e/i/k/r (802.11n up to 150 Mbps)，Bluetooth | Bluetooth v4.2
4*TMC2209,5 * motor connector
2 * heaters
Support 2 thermistors (can only read temperature above 30°)
Support BLtouch .
1 * Speaker connector
Support LCD128*64/PandaTouchScreen/DGUS touch screen
Play music at boot, Error/alarm music..
1 * runout connector,1* RGB light connector,1*DTH11 connector. if you like you can also use those 3 connectors  to other use,like max endstops.
Control printer, upload files with web browser
support CAN extruder board
More details
 
Package List:
1*board
1*blower, 3010 fan
1*antenna,2.4G,15cm
3D touch(BLtouch clone,MKS) optional
 
Shipping time: 
Express(DHL/FEDEX/TNT)--about 1 week,
Post -- about 2 weeks