#Dr-Volt #video #toread about #microscopy with a Blu-Ray laser. #hoarding #electronics
on 02026-08-24#Dr-Volt #video about converting an old Logitech mouse into a camera. It had a custom Logitech DIP on a single-sided PCB, separate from the ADNS 2610 camera sensor DIP, which has an 18×18 array of photodiodes visible under a microscope, with an “AGILENT 28D3D” label on the exposed die and a date of “2004”. Since he didn’t have a datasheet for the Logitech microcontroller, he hooked up the sensor chip to an #ESP32 S3 (programmed with #PlatformIO and VSCode) from his collection of #microcontrollers, like the one he’d built a laser scanning microscope from before. The chip uses an SPI-like protocol, but using a bidirectional data pin, and it exposes registers for not just Delta_X and Delta_Y but also some others including Pixel_Data, reads from which provide one pixel after another (so there’s no way to request a particular pixel). The mouse’s native resolution seems like a decent monochrome microscope, but with a very small field of view. He was able to get about a 3fps frame, unsurprising for what’s basically a debugging feature. He grafted the ESP32 into the mouse. #hoarding #electronics #hardware