The SQFMI Watchy is a fully open-source, hackable ePaper watch based on the ESP32 with a crisp, glare-free 1.54" 200x200 ePaper display which can be programmed using the Arduino IDE and lots of your favourite Arduino/ESP libraries!
This article showcases a bench project featuring a Seeed Studio XIAO-ESP32-C3 microcontroller board and a 1.28-inch circular TFT display. The XIAO-ESP32-C3, known for its small size and energy efficiency, is packed with the TFT display on a prototyping board. The uncommitted pins are wired to pin sockets, creating a small bench setup.
U8X8_GP1287AI_256X50_4W_SW_SPI u8x8(/* clock=*/ 0, /* data=*/ 2, /* cs=*/ 14, /* dc=*/ 4, /* reset=*/16);
Wearable Electronic Conference Badge. It contains color-changing RGB LEDs, a display, 3D printed conference holder, and lanyard.
Using a sine to binary 16 bit number generator I programmed those numbers into a pair of 2716 eproms to get the 16 bit wide sine number 'lookup table' or in this case 'conversion table'. It works incredibly well and my sine/cosine generator drives a large X/Y C.R.T. P.P.I. (Plan Position Indicator 'think radar'). The display has 64K of pixels and the memory storage has the feature of OR'ing old data with new data that will leave a trail behind any moving object. Best wishes on your project.
