I've recently purchased a SHT10 sensor. It finally arrived. ITs a DFROBOT part number SEN0148 made in china 2018.09.30 stainless steel probe.
on wht dfrobot wiki (Digital_Temperature_and_Humidity_sensor__With_Stainless_Steel_Probe___SKU_SEN0148_-DFRobot ) it says that this is a SHT20 sensor... beeing a SHT20 its a 3.3volts sensor right ?
it needs the 330ohm resistors on the SDA/SCL vcc on the 3v3 of the arduino.
So far so good.
But on the sensor i got a sticker saying : TYPE: DB130-10
SUPPLY: 2.5-5V output digital.
Now i am confused :
Cause if it is a STH10 its a 5 volts sensor and i need no resistors...
but if it is i will burn it if i connect it to 5 volts...
help ?
tanks
J-M-L
May 26, 2021, 11:37am
2
if you read their wiki , they seem to be fine @ 5 volts
but if you check the code its says 3v3 :\
Actually the code doesn't specify any connection pins on arduino.
So that code is probably for I2C.
Wawa
May 26, 2021, 11:42am
5
The SHT20 is a 3x3mm chip.
The probe most likely contains all the supporting parts for that tiny chip, including a 3.3volt supply.
Just follow the instructions, so you can blame DFRobot if something goes wrong
Leo..
J-M-L
May 26, 2021, 11:45am
6
Agree it's confusing. they write
Red wire - 5v
Blue wire - GND
Yellow wire - Clock wire
Black wire - Data wire
but then document in the code
* Hardware Connections:
* -VCC = 3.3V
* -GND = GND
* -SDA = A4 (use inline 330 ohm resistor if your board is 5V)
* -SCL = A5 (use inline 330 ohm resistor if your board is 5V)
I would trust the datasheet
yap...
on the schematic they connect to digital pins on the code its I2C...
Wawa
May 26, 2021, 11:57am
8
I2C needs four wires. Power/GND/SCL/SDA.
The probe only has three.?
Leo..
J-M-L
May 26, 2021, 12:38pm
10
there is a thin yellow wire in the drawing
system
Closed
September 23, 2021, 12:39pm
11
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