Forum >[SEN0219] Multiple sensor connected to one board
[SEN0219] Multiple sensor connected to one board
Piotr.Lesniak 2025-02-03 01:18:16 722 Views2 Replies Hi,
Is it possible to connect two CO2 sensors [SEN0219] to one Arduino board?
Greetings
2025-03-05 15:41:25 
lia.ifat
Yes. You have to use two different data pins. You just need to modify the code given in the wiki page:
https://wiki.dfrobot.com/Gravity__Infrared_CO2_Sensor_For_Arduino_SKU__SEN0219
If you want to make a PCB, you will get some idea about the cost here:
https://www.allpcb.com/blog/pcb-ordering/pcb-cost-per-unit.html
lia.ifat 
