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Why is Raspberry Pi 3 not detecting I2C device?
The issue was also some bad connections in the breadboard. If you face this problem, make sure that both your VCC and GROUND of the device is connected to the Raspberry Pi and also try pushing / moving a little bit the device in the breadboard to see if the i2cdetect identifies it. Thanks for contributing an answer to Raspberry Pi Stack Exchange!
What do you see when you type i2cdetect-y 1?
First of all, what do you see when you type i2cdetect -y 1 (assuming you have 2nd version of Raspberry Pi, else type i2cdetect -y 0) ? Do you see an empty address i2c table ?
Are there any devices not working on Raspberry Pi?
All the device not work directly on raspberry pi I2c bus without change, maybe you can try to add/remove the pull-up resistor. Are you sure the device is adapted to raspberry pi spec ?
What’s the mode pin on a Raspberry Pi?
I2C mode and Serial Mode. This is set with the Mode pin, connected to 0v Ground for Serial Mode and left unconnected (or tied to +5v Vcc) for I2C Mode. ” Have you tried to connect the mode pin to +5volts yet ?
Can a Raspberry Pi talk to a GPIO?
Adafruit’s Raspberry Pi Lesson 4. GPIO Setup I2C is a very commonly used standard designed to allow one chip to talk to another. So, since the Raspberry Pi can talk I2C we can connect it to a variety of I2C capable chips and modules.
Why is my Raspberry Pi not detecting devices?
It is very useful to be able to see which devices are connected to your Pi as a way of making sure everything is working. To do this, it is worth running the following commands in the Terminal to install the i2c-tools utility.
How does i2cdetect check for the existence of a device?
The i2cdetect program checks for the existence of a device by sending its address then letting SDA float high. If the device exists it should pull SDA low to signal its presence. Check your wiring to make sure SDA hasn’t been inadvertently connected to ground. I fixed this with a restart.