New answers tagged i2c
2
votes
Do I connect multiple I2C units to the microcontroler in series or parallel?
Use the Wikipedia page on the protocol as an introduction to your learning curve on I2C. I may cite:
At the physical layer, both SCL and SDA lines are [a ...] bus design, [...]
This means that all ...
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1
vote
Do I connect multiple I2C units to the microcontroler in series or parallel?
Connect the three I2C devices in parallel.
- 2,559
2
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DHT20 and Oled display not working together
The basic problem
I don't have this sensor kit. But am able to observe what you're describing with substitutes and stand-ins. There seem to be two things you can do.
The basic problem is that the ...
- 5,018
0
votes
Unable to find/connect I2C devices (SHT31 & SGP30)
Without a schematic I will take a SWAG" For I2C to work it needs a pull up resistor for SCL another for SDA. Both are open drain/collector outputs neither of which can drive a + (logic 1) on the ...
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2
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Unable to find/connect I2C devices (SHT31 & SGP30)
I had a similar problem, but the fix turned out to be simple. All the tutorials for SHT3x sensors say to connect the VIN to the 3.3V GPIO. I checked using a test meter, the SHT3x was getting voltage ...
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0
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DS3231 RTC not working with ESP32
Warning
These modules normally come with a 200Ω resistor soldered next to the IN4148 Zener diode, as you can see in the image below.
ds3231 module problem fix
The resistor and diode form a simple ...
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