The bus is kept on a high level and writing to the bus means to pull its level to ground.
Not a member of Pastebin yet? Sign Up, it unlocks many cool features! text 0.76 KB. Pricewise now S2 is a bit lower cost than ESP32 and more expensive than ESP8266, but there is very strong competition in this niche coming from the new Bouffalo BL6XX chips, so my prediction is that to stay ahead Espressif will further lower the prices of ESP32-S2 to match. Also support of decent SSL connection, something which lacks in ESP8266.
