diff --git a/README.md b/README.md
index 694f0e6..0607082 100644
--- a/README.md
+++ b/README.md
@@ -12,12 +12,13 @@ Turns a Raspberry Pi into an inexpensive, web-enabled kiln controller.
* no limit to runtime - fire for days if you want
* view status from multiple devices at once - computer, tablet etc
* real-time firing cost estimate
- * NIST-linearized conversion for accurate K type thermocouple readings
+ * real-time heating rate displayed in degrees per hour
* supports PID parameters you tune to your kiln
* monitors temperature in kiln after schedule has ended
* api for starting and stopping at any point in a schedule
* accurate simulation
* support for shifting schedule when kiln cannot heat quickly enough
+ * support for skipping first part of profile to match current kiln temperature
* prevents integral wind-up when temperatures not near the set point
* automatic restarts if there is a power outage or other event
* support for a watcher to page you via slack if you kiln is out of whack
diff --git a/lib/oven.py b/lib/oven.py
index fb2826c..245c662 100644
--- a/lib/oven.py
+++ b/lib/oven.py
@@ -327,6 +327,8 @@ class Oven(threading.Thread):
self.totaltime = 0
self.target = 0
self.heat = 0
+ self.heat_rate = 0
+ self.heat_rate_temps = []
self.pid = PID(ki=config.pid_ki, kd=config.pid_kd, kp=config.pid_kp)
@staticmethod
@@ -339,6 +341,24 @@ class Oven(threading.Thread):
startat = 0
return startat
+ def set_heat_rate(self,runtime,temp):
+ '''heat rate is the heating rate in degrees/hour
+ '''
+ # arbitrary number of samples
+ # the time this covers changes based on a few things
+ numtemps = 60
+ self.heat_rate_temps.append((runtime,temp))
+
+ # drop old temps off the list
+ if len(self.heat_rate_temps) > numtemps:
+ self.heat_rate_temps = self.heat_rate_temps[-1*numtemps:]
+ time2 = self.heat_rate_temps[-1][0]
+ time1 = self.heat_rate_temps[0][0]
+ temp2 = self.heat_rate_temps[-1][1]
+ temp1 = self.heat_rate_temps[0][1]
+ if time2 > time1:
+ self.heat_rate = ((temp2 - temp1) / (time2 - time1))*3600
+
def run_profile(self, profile, startat=0, allow_seek=True):
log.debug('run_profile run on thread' + threading.current_thread().name)
runtime = startat * 60
@@ -426,6 +446,8 @@ class Oven(threading.Thread):
temp = 0
pass
+ self.set_heat_rate(self.runtime,temp)
+
state = {
'cost': self.cost,
'runtime': self.runtime,
@@ -433,6 +455,7 @@ class Oven(threading.Thread):
'target': self.target,
'state': self.state,
'heat': self.heat,
+ 'heat_rate': self.heat_rate,
'totaltime': self.totaltime,
'kwh_rate': config.kwh_rate,
'currency_type': config.currency_type,
diff --git a/public/assets/js/picoreflow.js b/public/assets/js/picoreflow.js
index b5338ce..7d38a92 100644
--- a/public/assets/js/picoreflow.js
+++ b/public/assets/js/picoreflow.js
@@ -575,6 +575,10 @@ $(document).ready(function()
}
$('#act_temp').html(parseInt(x.temperature));
+ heat_rate = parseInt(x.heat_rate)
+ if (heat_rate > 9999) { heat_rate = 9999; }
+ if (heat_rate < -9999) { heat_rate = -9999; }
+ $('#heat_rate').html(heat_rate);
$('#heat').html('')
if (x.cool > 0.5) { $('#cool').addClass("ds-led-cool-active"); } else { $('#cool').removeClass("ds-led-cool-active"); }
if (x.air > 0.5) { $('#air').addClass("ds-led-air-active"); } else { $('#air').removeClass("ds-led-air-active"); }
@@ -608,6 +612,7 @@ $(document).ready(function()
$('#act_temp_scale').html('º'+temp_scale_display);
$('#target_temp_scale').html('º'+temp_scale_display);
+ $('#heat_rate_temp_scale').html('º'+temp_scale_display);
switch(time_scale_profile){
case "s":
diff --git a/public/index.html b/public/index.html
index b37b682..cc72819 100644
--- a/public/index.html
+++ b/public/index.html
@@ -29,6 +29,7 @@
Sensor Temp
Target Temp
+
Heat Rate
Cost
Status
@@ -36,6 +37,7 @@
25°C
---°C
+
---°C
0.00
\l[I♨