The v0.0 prototype
In the early days, we decided to use acrylic to make the outer frame of this product, but this would result in the appearance of the product appearing relatively cheap, and we did not consider the addition of batteries and other modules in the later stage.
PCB
We made two verison pcb, the 1st one use esp32s3 wroom module, and the 2nd one, we re-layout the esp32s3 for save space.
Replace tf card by sd nand.
implemented features
The mcu can do many things, and get the information from the screen, also can input information throught touch panel.
- 4.3inch LCD screen as output
- capacitive touch as input
- storage the data in tf card
- 15 more IO ports are available for expansion
for further information, please check v0.1 prototype.
