Remora - Rpi Software Stepping Using External Microcontroller via SPI

cakeslob wrote:

Sorry, you are correct it looks like there is no bootloader. 
What does the terminal output from linuxcnc look like when you try and get out of estop?
Just to cover bases, you have the remora comp installed and the RPI has SPI turned on
 

Yes the remora comp is installed and spi is on and this is the output from the terminal window I tried getting out of estop twice
and like I say I can't see any activity on the spi bus  

It's not necessary to enable the RPi SPI in the raspi-config utility as the Remora component utilises a compiled in driver, not the spidev driver.

No SPI output is really strange and for I'd first eliminate anything on the controller board side by disconnecting it and just putting the logic analyser directly onto the Pi CLK and MOSI pins to ensure the Pi is outputting a read request header when the eStop button is pressed.

righto mate ill give that a try, when I scoped out the CLK pin I had it disconnected on a side note on the MISO, and MOSI pins are LEDs on this board that pulls the lines to 2v through a 510-ohm resistor is this set up to pull it low? also cs is high and I don't see it pulling it low

my logic analyzer looks doa so I just used the scope I'm not seeing anything on the pins when it's disconnected from the stm i will try to re do my linuxcnc installation tomorow it's almost midnight here need sleep

Thanks to everyone in the forum for your help, I am currently using REMORA to complete the transformation of the 3D printer. My printer model is Prusa i3.
The problem I'm having at the moment is about Temperature
{
     "Thread": "Servo",
     "Type": "Temperature",
             "Comment": "temp0",
             "PV": "2",
             "Sensor": "thermistor",
                     "thermistor":
                     {
                             "Pin": "0.23",
                             "beta": 5,
                             "r0": 10000,
                             "t0": 200
                     }
     },

I use the skr1.4turbo board, I want to know how to set the parameters here, the bigtreetech document adopts this

temperature_control.hotend.thermistor EPCOS100K

I read the example on github. It seems to be set according to MKS SBASE. The skr board only uses the basic settings. Do you have similar work? Thank you for reading


Zuo

are you asking how to find the values for the beta r0 and t0?
www.ametherm.com/thermistor/ntc-thermistor-beta

Or if you want to trust other users data scroll down here for the values
reprap.org/wiki/Thermistor


// EPCOS 100K Thermistor (B57540G0104F000)
// Thermistor lookup table for RepRap Temperature Sensor Boards ( make.rrrf.org/ts )
// Made with createTemperatureLookup.py ( svn.reprap.org/trunk/reprap/firmware/Ard...TemperatureLookup.py )
// ./createTemperatureLookup.py --r0=100000 --t0=25 --r1=0 --r2=4700 --beta=4066 --max-adc=1023
// r0: 100000
// t0: 25
// r1: 0
// r2: 4700
// beta: 4066
// max adc: 1023