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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 ...
the busybee's user avatar
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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.
VE7JRO's user avatar
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2 votes

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 ...
timemage's user avatar
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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 ...
Gil's user avatar
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2 votes

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 ...
Hillclimb's user avatar
0 votes

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 ...
juan orozco's user avatar

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