4 ms·
I didn't down-vote you, but I suspect you've been down-voted because your question doesn't make much sense. A thermocouple is a temperature sensor, in that it
by guenthert 6y ago
I didn't down-vote you, but I suspect you've been down-voted because your question doesn't make much sense. A thermocouple is a temperature sensor, in that it transforms a temperature difference into a potential difference (voltage). You might be able to use the built-in ADC to digitize that voltage, but you likely need a sensitive low-noise, low-offset amplifier. For high temperatures (high temperature differences) and low accuracy requirements, you might use the built-in semiconductor temperature sensor as (not quite so) cold-junction reference. Does that answer your question?
- Abishek_Muthian 6y agoIt does, thanks. I wanted to know if the temperature sensor could function like MAX6675 by connecting k-type thermocouple to a terminal; Should have checked the datasheet prior or made the question clearer.
- rasz 6y agoYou dont connect thermocouples to "temperature sensors", you connect them to ADCs after appropriate amplification. MAX6675 has build in opamp, adc and full microprocessor under the hood doing signal conditioning, digitization, linearization, translation, and cold joint temperature compensation. TLDR: No, you wont be able to connect thermocouple directly to the Pico. You will have to design/copy frontend for it.
- Abishek_Muthian 6y agoI assumed/misunderstood RP2040 also had - > build in opamp, adc and full microprocessor under the hood doing signal conditioning, digitization, linearization, translation, and cold joint temperature compensation. I stand corrected, thank you.