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+--- Thread: PT1000 to KC868-A8 by ADC (/showthread.php?tid=4712)
PT1000 to KC868-A8 by ADC - bousbouss - 02-26-2024
Hi,
Is it possible to connect a 2-wire PT1000 sensor to the KC868-A8 (by using ADC)?
I connected my PT1000 to A1 and GND, but i get these readings in esphome:
[12:20:21][D][sensor:094]: 'Temperature_4': Sending state 0.14200 V with 2 decimals of accuracy
[12:20:22][D][sensor:094]: 'Temperature_3': Sending state 0.14200 V with 2 decimals of accuracy
with this setup:
sensor:
- platform: dallas
address: 0x453c3ee381b36028
name: "Temperature_1"
id: Temperature_1
- platform: dallas
address: 0x783ce104577f4c28
name: "Temperature_2"
id: Temperature_2
- platform: adc
pin: 34
name: "Temperature_3"
update_interval: 5s
attenuation: 11db
- platform: adc
pin: 35
name: "Temperature_4"
update_interval: 5s
attenuation: 11db
I found this picture bellow, do I have to add 12v to the sensor? How do I do that if my PT1000 sensor has 2 wires?
RE: PT1000 to KC868-A8 by ADC - admin - 02-26-2024
no, can't connect with analog input directly. because our board analog input use by dc 0-5v signal.
RE: PT1000 to KC868-A8 by ADC - bousbouss - 02-26-2024
Thank you for your quick reply.
Is there a way to connect my pt1000 to my KC868-A8?
How about with this https://esphome.io/components/sensor/max31865.html?
How would I connect that to the KC868-A8?
RE: PT1000 to KC868-A8 by ADC - admin - 02-26-2024
if you can use K type thermocouple, you can use KinCony A24, that use by MAX31855, support 3CH K type thermocouple.
RE: PT1000 to KC868-A8 by ADC - bousbouss - 02-26-2024
But I already have the Kincony KC868-A8. Is there not a way to connect a max31865 to this board? Maybe by using the 433mhz pins? Or via the IIC extender?
RE: PT1000 to KC868-A8 by ADC - admin - 02-26-2024
no, MAX31865 use by SPI bus, A8 board not have SPI bus. if you can find out I2C bus solution chip,then you can use .
RE: PT1000 to KC868-A8 by ADC - bousbouss - 02-26-2024
Is there another way to connect the pt1000 to the KC868-A8? (without a max31865)?
RE: PT1000 to KC868-A8 by ADC - admin - 02-26-2024
you can use this: https://www.hicomponent.com/pt100-to-0-4-20mA-converter-rtd-transmitter.html
PT1000 convert to 0-5v signal.
RE: PT1000 to KC868-A8 by ADC - bousbouss - 02-27-2024
(02-26-2024, 10:27 PM)admin Wrote: you can use this: https://www.hicomponent.com/pt100-to-0-4-20mA-converter-rtd-transmitter.html
PT1000 convert to 0-5v signal.
Perfect! I will give this a try