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Accepted
I2C sensors not working when I connect to LCD 20X04
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I can spot a few problems with the circuit. As @hcheung said, the I2C pull-up resistors should only be wired between SDA>3.3V and SCL>3.3V (in parallel), not in series ...
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2
votes
I2C sensors not working when I connect to LCD 20X04
Thank you for all your help.
I now realize that I have made the wrong I2C circuits. Then I modified them and now the program and the sensors work perfectly.
Here is my circuit now.
1
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Can't read through I2C from RTC
You are doing things in the wrong order.
Wire.beginTransmission(0x68);
Wire.write(0x06);
Wire.requestFrom(0x68,1);
seconds = Wire.read();
ret = Wire.endTransmission();
The request is sent on ...
- 35k
1
vote
Configure Trinket M0 as I2C peripheral
I have two Adafruit Trinket M0 arduino boards running on my bench right now talking to each other over I2C. The trick is that you need to install a pull-up resistor between SDA and +3V, and another ...
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