Wifi 32 ADS1115

#1

Hi All,

I have been using the WIFI 32 with the ADS 1115 unit for over a year and produced over a 100 devices with the same code and hardware. Due to supply constraints i have had to source some wifi 32 units locally from two suppliers.

When powering up the devices with the same code as always the units stop at the command adc2 = ads.readADC_SingleEnded(2);. When i swap the Wifi 32 or the ADS1115 units to this assembly the issue is not present. It appears i have something different in the Wifi 32 units, i have also wired pullup resistors on pin 21 and 22 (never required before).

I have run many different I2C testers and it looks like nothing is responding on the second bus on these units (9) the other 2 behave fine with all the same code.

Looks like something has changed regarding pin 21 and 22 on the WIFI 32, any one any ideas?

#2

May I ask which version did you buy?

#3

Hi,

I have just taken some images with a USB microscope and it looks like the units not working with I2C all have ESP32-D0WDQ6 v3 ESP32’s installed the ones that work have ESP32-D0WDQ6 is anyone aware of if this causes any issues on the I2C bus?
S20220227_003 S20220227_004

#4

I don’t know what the specific problem is. ESP32-D0WDQ6 v3 and ESP32-D0WDQ6 should be similar, and the manuals use the same one
Can’t you just buy everything later? Make sure the lower pin is soldered