vesiga::esp-sonar

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Description:
  1. oscilloscope photo, showing the pulse width of 5260µs, which equates to a distance of 90.7cm
  2. some ESP-01 devices, with a micro SD card adapter for size.
  3. the ESP-01 sat on the USB programming device, hooked into my laptop (red LED is power, blue is TXD)

Unless otherwise indicated, all of the photos shown copyright © Per Jessen, per@jessen.ch, 2014-2024.

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