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#HackOfTheDay: Friend of the Lab (I'm typing on his hand-me-down macbook pro!) Donald dropped by today with a problem dear to my heart. When speaking to an audience he struggles with time, going into terror induced tunnel vision. His idea: put an LED bar graph on top of his laptop screen where he CANNOT fail to see it.

Donald is a laser whiz and had already lasercut a bargraph holder that slots onto his laptop screen. With an ESP32 development board from the Wall o' Parts™️, and a knob/screen combo board he sourced from The Usual, we knocked up a micropython program which lets him set the talk duration hand have a progress display that has 50 LED pixels, that shade green, orange, yellow red as his speaking slot elapses.

I'm making one. Mine might need a hammer-servo too.

ETA: pic

A bright LED bargraph is mounted on the top of the screen of a macbook. In the foreground is a small circuit board with an OLED display that shows time remaining; it has a rotating knob to set the time and a pushing the knob starts/stops. This project is deliberately as simple as possible to support Speaker Tunnel Vision. The display shows that there are six seconds left in the slot, and the bargraph is now red at the tip.
#hackoftheday

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