What is it?

It is a Zen Machine that randomly selects a Zen quote from an SD card and displays it on an OLED screen. You can also edit the content you want to display and show it. You just need to directly edit the txt file in the SD card. You can also develop your own projects.

The following is part of the displayed content：

• “Life is 10% what happens to you and 90% how you react to it.”
• “Every accomplishment starts with the decision to try.”
• “Your only limit is the amount of action you’re willing to take.”

Why did you make it?

I redesigned this project for the original D-duino32-I to help beginners learn programming. You can also use it as a desktop ornament or a password reminder. I designed the shell and put the antenna and battery inside.You can find the source code and 3D shell files in the SD card.

What makes it special?

• It is fully assembled and ready to use right out of the box.
• It includes a 500mAh battery and a 3DB FPC antenna.
• Complimentary Type-C data cable.
• An SD card and source code are included as gifts with the product.
• Easy to get started. You can directly edit the TXT file on the SD card.

GPIOs and hardware info

• MCU: ESP32S3 N16R8
• Display: SH1106 1.3OLED
• Display SDA : GPIO8
• Display SCL : GPIO9
• Rotary switch LEFT: GPIO 48
• Rotary switch PRESS: GPIO 47
• Rotary switch RIGHT: GPIO 21
• SD CS:GPIO10
• SD MOSI:GPIO11
• SD MISO:GPIO13
• SD SCLK:GPIO12
• RGB WS2812B: GPIO14

When connected to a USB port, it will automatically start charging. Please set the switch to the OFF position when charging. When it is fully charged, the indicator light behind the screen will change from red to green.