In article ,
Tauno Voipio   wrote:
>On 18.2.18 20:07, Gordon Henderson wrote:
>> In article ,
>>    wrote:
>>> I have tried different tutorials and forums where people had same/similar
issues with i2c but still, I can't
>>> solve this problem.
>>>
>>> I tried two different BMP180 Digital Barometric Pressure Sensor modules and
even IIC/12C/TWI 1602 Serial LCD module
>>>
>>> None of them showed up on the i2c detect -y 1
>>>
>>> I have Raspberry PI 3 B and the following versions and Raspbian GNU/Linux 9
(stretch)
>>>
>>> https://forums.adafruit.com/download/file.php?id=55367
>>
>> Check power on the sensor board itself with your multimeter. Then
>> (assuming that's all OK at 3.3v) check the SCL and SDA wires - swap
>> them over - it won't hurt anything, but it's easy to get these the wrong
>> way round.
>>
>> Try one device at a time too.
>>
>It may also be that the necessary pull-up resistors are
>missing from SDA, SCL or both.

They are fitted to the Pi as standard.

Gordon

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