Hello all , i am totally new in all this . i have no background in electrical or coding . i am attaching my circuit which i made in fritzing . can someone tell me the my connection are right or wrong. if i will do it in real then every thing will be ok?.
i am planning to connect 8 type k thermocouples through 8 max31855 module to the arduino mega 2560. i am attaching here picture .
here is my max31855 module details.
MAX31855 Module + K-Type Thermocouple Thermocouple Sensor Temperature ā200ā~1350ā Thermocouple Thermometer and Probes
Then he needs to use a level translator (there are a bunch around, do a google search for āfritzing part level translatorā to find them) to translate the 3.3V signals to and from 5V. If they are input only (not output to the 3.3V interface) it will usually just work as is. Driving a 3.3v input wiith 5V will generally damage the 3.3V part.
Iām a bit busy this week, so I did not complete the schematic view
Since the arduino is reading the thermocouple sensor, I think data is being transferred from the module to the arduino (i.e. 3.3V to 5V). If Iām wrong just let me know, I can fix the sketch. It is not to difficult to fix.
Well I usually connect my wires to 3.3V (and not VIN) to my 3.3V electronics, so I applied the same logic and connected it to the 3.3V pin
I suppose so
Do you need the Fritzing sketch with the TXSO108e logic converter? If so I can create one (just that Iām busy now but I will be able to complete by the end of this week)
in this example used this logic level controller where i think connection 5 v at HV and 3.3 v at LV and from max 31855 spi pins throgh TXI at lower vvoltage side channel . i mean in this above photo where mentioned red color line .
so my question is i am using this logic converter which has following pins HV GND LV act same as above example here also i have to connect spi pins from max31855 to the LV1 and Lv4 . i mean i have to do same coonnections as it desiged above wiring ? .
here given LV1 act as TXI , LV2 act as RXO , LV3 as RXO , LV4 as TXI and so on . ?
While Iām not entirely sure, I guess itās the same (bi-direction, HV and LV1, 2, 3, 4 are sifnal pins, LV connects to 3.3V Power while HV connects to 5V power