CubeCell AB01 with SCD41 Dev Board

#1

Does HTCC AB01 works with SCD41 CO2 sensor or I am missing something?

I followed the steps of integrating with Arduino platform from the Sensirion downloaded the necessary libraries and wired them accordingly.

here is the error message I got in serial monitor.

HTCC%20AB01%20output
HTCC AB01 output.PNG1080×648 9.74 KB

sounds like the wiring is wrong but I double checked the wiring according to the pinout of AB01
GND to GND
VDD to V3.3
SCL to SCL
SDA to SDA

any help would be really appreciated!
MZ

P.S. HTCC AB01 was tested before and worked fine with the basic functions, such as reading battery capacity, sending LoRa data and etc.

#2

There should be no problem connecting, please check the program or try to add pull resistance to the IIC bus.

#3

also here is the wiring…

image2
image2.jpeg2448×3264 2.96 MB

#4

they are all working now… nothing really changed…

#5

Thx Xiao-H and I added the pull resistance…