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EasyIoT server
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ESP8266 (without Arduino)
ESP8266 (without Arduino)
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8 years 11 months ago - 8 years 11 months ago #2053
by asm7100
HTU21D is with I2C interface to, and remember to pull the lines up.
www.google.dk/search?q=i2c+pullup&tbm=is...B7UasuDrQfZ-bY5wU%3D
Its a link to a picture on how to pull up I2C.
To pullup to 3v3 use 2k2.
And if your HTU21D is on a modul, maby the lines is already pullup. And you can only have one pullup on the string.
//
Allan
Last edit: 8 years 11 months ago by
asm7100 . Reason: Add som extra text
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8 years 11 months ago - 8 years 11 months ago #2054
by piman
Thanks for the reply I take it are use to resistors on each line instead of just connecting the sensor directly to the ESP not quite sure on the resistor values but I found this
Would this be okay.
Also not sure how to call additional sensors to the url.
Thanks for your advice.
Last edit: 8 years 11 months ago by
piman .
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Karma: 1
Thank you received: 7
Forum
EasyIoT server
General
ESP8266 (without Arduino)
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