search

makerbase-mks / MKS-Robin

MKS Robin is a powerful 32-bit 3D printer control board with STM32F103ZET6 . Support Marlin2.0. Support MKS Robin TFT24/28/32... Screens. The motherboard integrates 5 AXIS interface, hot bed, 2 heating heads, 3 NTC100K, 2 MAX31855.Support MKS Robin WIFI for cloud printing.Supports firmware update by SD card…
https://es.aliexpress.com/item/32757129463.html?spm=a219c.12010612.8148356.9.5fc165f4oDUfFM
129 stars 129 forks source link

PT100 with Amplifier weird reading #161

Closed petrzmax closed 4 years ago

petrzmax commented 4 years ago

Hi I'm successfully using MKS Robin Nano with Marlin and now I'm trying to set up PT100 sensor. Unfortunately It's almost always reading about 190 degrees in Marlin. All the connections are good, because I have measured everything with multimeter - Signal on amplifier output matches room temperature.

I have set #define TEMP_SENSOR_0 to 20 and I was trying different pins. I have no idea why it's not working. If think that there may be some electronic problem which I can't see. Do You have some ideas where to look for it?

petrzmax commented 4 years ago

Unfortunatelly it still didn't work. I have even removed pull up resistor from TH1 slot to check if it's a problem but the reading with #define TEMP_SENSOR_0 set to 20 is about 180 at room temperature. It is rising when I enable heating. Do You have any ideas?

petrzmax commented 4 years ago

There was a need to create a new temptable.