how to get log file to save

[mike-brandt]

this is a previous issue raised
i followed the instructions and got a listisng of the log in terminal

i have search of my rpi file system and there is no daemon.log

is there any way to get the log to save automaticly
i've attached my config.py file

""
Tried to locate the /var/log/daemon.log file but the kiln controller does not seem to be writing them, any suggestions?

If you run
sudo journalctl -u kiln-controller.service
You should see them there if you're running kiln-controller as a service.

""

import logging
import os
from digitalio import DigitalInOut
import busio

########################################################################

General options

Logging

log_level = logging.INFO
log_format = '%(asctime)s %(levelname)s %(name)s: %(message)s'

Server

listening_port = 8081

########################################################################

Cost Information

This is used to calculate a cost estimate before a run. It's also used

to produce the actual cost during a run. My kiln has three

elements that when my switches are set to high, consume 9460 watts.

kwh_rate = 0.1319 # cost per kilowatt hour per currency_type to calculate cost to run job
kw_elements = 9.460 # if the kiln elements are on, the wattage in kilowatts
currency_type = "$" # Currency Symbol to show when calculating cost to run job

########################################################################

Hardware Setup (uses BCM Pin Numbering)

kiln-controller.py uses SPI interface from the blinka library to read

temperature data from the adafruit-31855 or adafruit-31856.

Blinka supports many different boards. I've only tested raspberry pi.

First you must decide whether to use hardware spi or software spi.

Hardware SPI

- faster

- requires 3 specific GPIO pins be used on rpis

- no pins are listed in this config file

Software SPI

- slower (which will not matter for reading a thermocouple

- can use any GPIO pins

- pins must be specified in this config file

#######################################

SPI pins if you choose Hardware SPI

#######################################

On the raspberry pi, you MUST use predefined

pins for HW SPI. In the case of the adafruit-31855, only 3 pins are used:

SPI0_SCLK = BCM pin 11 = CLK on the adafruit-31855

SPI0_MOSI = BCM pin 10 = not connected

SPI0_MISO = BCM pin 9 = D0 on the adafruit-31855

plus a GPIO output to connect to CS. You can use any GPIO pin you want.

I chose gpio pin 5:

GPIO5 = BCM pin 5 = CS on the adafruit-31855

Note that NO pins are configured in this file for hardware spi

#######################################

SPI pins if you choose software spi

#######################################

For software SPI, you can choose any GPIO pins you like.

You must connect clock, mosi, miso and cs each to a GPIO pin

and configure them below based on your connections.

#######################################

SPI is Autoconfigured !!!

#######################################

whether you choose HW or SW spi, it is autodetected. If you list the PINs

below, software spi is assumed.

#######################################

Output to control the relay

#######################################

A single GPIO pin is used to control a relay which controls the kiln.

I use GPIO pin 23.

try:
import board
spi_sclk = board.D17 #spi clock
spi_miso = board.D27 #spi Microcomputer In Serial Out
spi_cs = board.D22 #spi Chip Select
spi_mosi = board.D10 #spi Microcomputer Out Serial In (not connected)
gpio_heat = board.D23 #output that controls relay
gpio_heat_invert = False #invert the output state
except (NotImplementedError,AttributeError):
print("not running on blinka recognized board, probably a simulation")

#######################################

Thermocouple breakout boards

#######################################

There are only two breakoutboards supported.

max31855 - only supports type K thermocouples

max31856 - supports many thermocouples

max31855 = 1
max31856 = 0

uncomment these two lines if using MAX-31856

import adafruit_max31856
thermocouple_type = adafruit_max31856.ThermocoupleType.K

here are the possible max-31856 thermocouple types

ThermocoupleType.B

ThermocoupleType.E

ThermocoupleType.J

ThermocoupleType.K

ThermocoupleType.N

ThermocoupleType.R

ThermocoupleType.S

ThermocoupleType.T

########################################################################

If your kiln is above the starting temperature of the schedule when you

click the Start button... skip ahead and begin at the first point in

the schedule matching the current kiln temperature.

seek_start = True

########################################################################

duty cycle of the entire system in seconds

Every N seconds a decision is made about switching the relay[s]

on & off and for how long. The thermocouple is read

temperature_average_samples times during and the average value is used.

sensor_time_wait = 2

########################################################################

PID parameters

These parameters control kiln temperature change. These settings work

well with the simulated oven. You must tune them to work well with

your specific kiln. Note that the integral pid_ki is

inverted so that a smaller number means more integral action.

pid_kp = 10 # Proportional 25,200,200
pid_ki = 80 # Integral
pid_kd = 220.83497910261562 # Derivative

########################################################################

Initial heating and Integral Windup

this setting is deprecated and is no longer used. this happens by

default and is the expected behavior.

stop_integral_windup = True

########################################################################

Simulation parameters

simulate = True
sim_t_env = 65 # deg
sim_c_heat = 500.0 # J/K heat capacity of heat element
sim_c_oven = 5000.0 # J/K heat capacity of oven
sim_p_heat = 5450.0 # W heating power of oven
sim_R_o_nocool = 0.5 # K/W thermal resistance oven -> environment
sim_R_o_cool = 0.05 # K/W " with cooling
sim_R_ho_noair = 0.1 # K/W thermal resistance heat element -> oven
sim_R_ho_air = 0.05 # K/W " with internal air circulation

if you want simulations to happen faster than real time, this can be

set as high as 1000 to speed simulations up by 1000 times.

sim_speedup_factor = 1250
########################################################################

Time and Temperature parameters

If you change the temp_scale, all settings in this file are assumed to

be in that scale.

temp_scale = "f" # c = Celsius | f = Fahrenheit - Unit to display
time_scale_slope = "h" # s = Seconds | m = Minutes | h = Hours - Slope displayed in temp_scale per time_scale_slope
time_scale_profile = "m" # s = Seconds | m = Minutes | h = Hours - Enter and view target time in time_scale_profile

emergency shutoff the profile if this temp is reached or exceeded.

This just shuts off the profile. If your SSR is working, your kiln will

naturally cool off. If your SSR has failed/shorted/closed circuit, this

means your kiln receives full power until your house burns down.

this should not replace you watching your kiln or use of a kiln-sitter

emergency_shutoff_temp = 2264 #cone 7

If the current temperature is outside the pid control window,

delay the schedule until it does back inside. This allows for heating

and cooling as fast as possible and not continuing until temp is reached.

kiln_must_catch_up = True

This setting is required.

This setting defines the window within which PID control occurs.

Outside this window (N degrees below or above the current target)

the elements are either 100% on because the kiln is too cold

or 100% off because the kiln is too hot. No integral builds up

outside the window. The bigger you make the window, the more

integral you will accumulate. This should be a positive integer.

pid_control_window = 5 #degrees

thermocouple offset

If you put your thermocouple in ice water and it reads 36F, you can

set set this offset to -4 to compensate. This probably means you have a

cheap thermocouple. Invest in a better thermocouple.

thermocouple_offset=0

number of samples of temperature to take over each duty cycle.

The larger the number, the more load on the board. K type

thermocouples have a precision of about 1/2 degree C.

The median of these samples is used for the temperature.

temperature_average_samples = 10

Thermocouple AC frequency filtering - set to True if in a 50Hz locale, else leave at False for 60Hz locale

ac_freq_50hz = False

########################################################################

Emergencies - or maybe not

########################################################################

There are all kinds of emergencies that can happen including:

- temperature is too high (emergency_shutoff_temp exceeded)

- lost connection to thermocouple

- unknown error with thermocouple

- too many errors in a short period from thermocouple

but in some cases, you might want to ignore a specific error, log it,

and continue running your profile instead of having the process die.

You should only set these to True if you experience a problem

and WANT to ignore it to complete a firing.

ignore_temp_too_high = False
ignore_tc_lost_connection = False
ignore_tc_cold_junction_range_error = False
ignore_tc_range_error = False
ignore_tc_cold_junction_temp_high = False
ignore_tc_cold_junction_temp_low = False
ignore_tc_temp_high = False
ignore_tc_temp_low = False
ignore_tc_voltage_error = False
ignore_tc_short_errors = False
ignore_tc_unknown_error = False

This overrides all possible thermocouple errors and prevents the

process from exiting.

ignore_tc_too_many_errors = False

########################################################################

automatic restarts - if you have a power brown-out and the raspberry pi

reboots, this restarts your kiln where it left off in the firing profile.

This only happens if power comes back before automatic_restart_window

is exceeded (in minutes). The kiln-controller.py process must start

automatically on boot-up for this to work.

DO NOT put automatic_restart_state_file anywhere in /tmp. It could be

cleaned up (deleted) by the OS on boot.

The state file is written to disk every sensor_time_wait seconds (2s by default)

and is written in the same directory as config.py.

automatic_restarts = True
automatic_restart_window = 15 # max minutes since power outage
automatic_restart_state_file = os.path.abspath(os.path.join(os.path.dirname( file ),'state.json'))

########################################################################

load kiln profiles from this directory

created a repo where anyone can contribute profiles. The objective is

to load profiles from this repository by default.

See https://github.com/jbruce12000/kiln-profiles

kiln_profiles_directory = os.path.abspath(os.path.join(os.path.dirname( file ),"storage", "profiles"))
#kiln_profiles_directory = os.path.abspath(os.path.join(os.path.dirname( file ),'..','kiln-profiles','pottery'))

########################################################################

low temperature throttling of elements

kiln elements have lots of power and tend to drastically overshoot

at low temperatures. When under the set point and outside the PID

control window and below throttle_below_temp, only throttle_percent

of the elements are used max.

To prevent throttling, set throttle_percent to 100.

throttle_below_temp = 300
throttle_percent = 20

[mike-brandt]

config.py

sorry that looks terrible and worse it is from my computer and not my rpi
i have attached( i hope) the config.py from my rpi