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Raspberry Pi enthusiasts may be interested in a new accessory for the versatile mini PC taking the form of the PicoLight. A small rainbow NeoPixel matrix consisting of 4×4 LEDs and measuring just ...
With Opto-pi, there is not an electrical connection between the Raspberry Pi and connected loads (motors, relay coils, etc.) or input signals. Opto-pi uses light to isolate the 8 digital GPIO pins.
The trick is using the Raspberry Pi’s little-documented Secondary Memory Interface. The SMI hardware allows the Pi to shift out data to 8 or 16 I/O pins in parallel using direct memory access ...
Along with the Raspberry Pi Compute Model 4, you'll need an AI image processor like the Ambarella CV72S or Texas Instrument A53/A7f, an LED light, and a small camera module.
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