Hi! You can but is not needed if you won't control motors (inductive load) like dosing pumps and fans directly. Best regards. -------------------------------- Last edited Wed Jul 19, 2017 9:51 am -------------------------------- Warning: Connect 5V to common if the ULN will work with 5V. If will...

I will use the parallel two-wire solution as recommended Thanks !!

Hi! Your cable seems female to female but should be female to male. Best regards.

I didn't told to measure anything. I told to connect a LED 5mm to test your circuit as shown on schematic.

Hy fernando I needed a connection scheme for the various components. It can even be drawn by hand. When ferduino plates are planned?

Hoje Fernando, Thanks for Help. My Arduino os a cheap version, and some texts are ilegible.

Hi! Not, try the link above. Best regards.

[quote=" Marcelo Machado » Yesterday 8:10 pm ":2nhdgfv5] //define USE_PINS_18_AND_19_FOR_RTC use this way... solved... but the problem came back just when the internet cable is disconected

Sorry, is not joke.Only I did not know that :( I could not find in local stores such a small capacity memory card. I get one and try! thank you!

[quote=" Fernando Garcia » 8 minutes ago ":1t87tput]NOT! Try this: thank you Fernando

That you for your quick reply. I will stick then to your recommendations :)

Thanks Fernando.

Thank you for your reply, this expansion is exciting, but I prefer it to be all on one PCB, So far I have added CF into PWR-ISO ON Y3, then PH, PH2 and ORP connect in Y2, Y1 AND Y0, finally, RX and TX from 4way multiplex into PWR-ISO, then arduino. So, CF isolated into multiplex PH, PH2, ORP not...

Hi! Can you make the tests suggested above and show me results first please? Best regards.

Hi! Sorry, the BSS138 is for I2C devices as PCF8575. It should work with TXB0108 it's similar to 74LVC245. Please to ask help about Arduino DUE use the Arduino forum. Best regards.

Hi Rafael, I use a stepdown converter like This , connected to Vin of the arduino.It is regulated to about 5.4V,just enough to power up te arduino. This way the arduino regulator won't overheat (it doesn't have to convert the 9V>5 V) .You can also use this voltage to power up your temp probes...

Hi! Rafael, if this problem was solved please show us the solution and mark the topic as solved. Best regards.

Hello Fernando!!! Thanks your help... this problem solved... :D :D :D

Hi! Check the images and notice that there 1 wire unconnected. The wire colors for your sensor should be: Red = VCC Black = GND Yellow = Data Leave the red wire unconnected. Best regards.

problem solved, after I check, it turns out there is a path short, Ground and data. thanks fernando :-bd

Hi! It won't solve the problem. Later don't ask me why dosing pumps and graphs are not working. Follow the instructions available on forum, I'm tired to repeat informations for you. Best regards.

Hi! The initial problem on this topic was solved so, this topic will be closed. To others problems create a new topic but first SEARCH on forum. There answers for this problem with ethernet module and SD card like this: Best regards.

Hello Fernando sorry for late reply I have had problems already solved hospital Thanks to all for the contribution, but you tell me how I use the timer from ferduino for more I try not achievement that led to the relays as they are running as connect as turn on you told me on pin 42, Arduino me on...

Hi! Welcome Sedat! You can find the module on Ebay with good price. I don't know this part. Best regards.

Glad to hear. I'll close this topic because the initial issue was solved.