29-05-2019, 23:29
(29-05-2019, 18:49)Werk_AG Wrote:(29-05-2019, 12:47)hornychz Wrote:
In the meanwhile, my order from 3D HUBS was lost somewhere by the delivery company (strange as it happened with DHL). 3D HUBS customer support has been fantastic on all this process, and they are now doing a reprint which will be sent to me ASAP by priority mail.
(29-05-2019, 13:07)hornychz Wrote: 1) LED ???
a) green LED for CO2 <1500 ppm
b) orange for CO2 1500-3000 ppm
c) red flashing LED for CO2> 3000 ppm
maybe some buzzer?
2) CO
connect another sensor for CO ???
1) - I'm afraid there isn't any free pins to connect the Leds
2) - A second CO sensor or another type?
ad 1) Yes, it is clear, but - it would be nice into school classrooms...
ad 2) Not just CO2, but also CO sensor - I know, we haven't now how to connect it, but it would be nice into a room with gas appliances...
But these are just ideas that might be good.
Good night!