I recently purchased the Atlas Scientific multiplexer along with two EZO pH circuits and two Electrically Isolated EZO Carrier Boards. I attach the connection scheme that I followed, as I also use the ESP8266 module instead of using pins 16 and 17 I used the A6 and A7 that I have free.
I calibrated the 2 probes with the Atlas Scientific calibration IDE.
and they give correct values in that IDE.
The problem was that when loading Ferduino's IDE, it did not give measurements.
After asking in the forum, I followed Fernando's instructions.
The result is :
When changing the Baud rate as in the example, the led light of each ezo module goes off and does not measure with the Atlas IDE, even if the Baud is changed to the Atlas IDE.
Then when loading it with Ferduino's IDE, the ph measurements appear on the screen but giving erroneous measurements.
The ph of 7 gives it good but with the solution of ph 4 , of the screen it gives 1 and with the ph of 10 gives 14.
I have managed to operate the ph modules with the IDE of Atlas, with the commands L, 1 (LED on) and then C, 1 (enable continuous readings once per second). The led light comes back on and gives correct values.
When reloading with Ferduino, the same, the light goes off and gives erroneous measurements.
I read in a post that there could be some problem with the 3 decimals of these new modules. I do not know.
I'm using the IDE with date (14.6.2018).
Can anybody help me?
Tks and best regards