Hello everyone, I need help in developing a bluetooth braille display based on ESP32.
I am developing ReadRing, a rotary refreshable braille display to be sold under 300 USD in mass production (Handmade units being sold at under 400 USD in Thailand). The patented rotary braille mechanism allows continuous braille steaming inside its drum as the user moves the mouse-sized device to the right. Users can read braille sentences as long as they want. The recent prototype contains only 3 piezoelectric actuators, so the electronics can be very simple. It is powered by a 800 mAh 3.7V battery with a thumbnail-sized Nixie clock 170 volts converter. The total weight is 91 grams, half of a smartphone. This rotary architecture enables real time OCR-to-braille with line tracking when we have embedded computer vision technology in the near future. You can see videos of working prototypes tested by blind students on the website below. I have made a few major revisions of working prototypes in the past 6 years of development. The recent one uses ESP32-WROVER-B TTGO-T7 v1.5 that communicates with a smartphone via serial bluetooth. Now, I only know serial bluetooth and functional interrupt learning from an example in the Arduino IDE as attached. I want it to communicate like other braille displays. Please help me find example codes for bluetooth/BLE braille displays. Thank you -- Songpakorn Punongong, Mr. CEO & CTO ReadRing Co., Ltd. Tax ID: 0105560141347 www.read-ring.com 328/1 Memorial Building of Ray C. and Elizabeth Downs, 2nd Floor PhayaThai Road, Thanon Phetchaburi Sub-district, Ratchathewi District Bangkok 10400, THAILAND +66813510162
FunctionalInterrupt.ino
Description: Binary data
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