List: standalone runtime graph maker/ lux loggers (for flashlight reviewers)

[gchart]

That’s similar to what I use… an ESP8266 hooked up to a TLS2591

Cross post from the “”What did you mod today?“”:What did you mod today? - #7024 by gchart thread from last February:

@gchart

A year or so ago I built a lumen tube using a Wemos D1 Mini (ESP8266) running Arduino and a TSL2591 breakout board. Super small, USB powered, and feeds out results over WiFi via a built-in webserver. It makes runtime/output charts really easy.