Mydin-UseCase-Basic-Thermostat - Historique des versions

Admin : /* Improve it */

2025-04-30T21:25:41Z

Improve it

Admin : /* Forced Mode */

2025-04-30T21:24:43Z

Forced Mode

Admin : /* Forced Mode */

2025-04-30T21:24:23Z

Forced Mode

Admin : /* Forced Mode */

2025-04-30T21:11:37Z

Forced Mode

Admin : /* Forced Mode */

2025-04-30T20:06:51Z

Forced Mode

Admin le 30 avril 2025 à 20:04

2025-04-30T20:04:52Z

Admin : /* Basic Thermostat */

2025-04-30T20:02:15Z

Basic Thermostat

Admin : /* Basic Thermostat */

2025-04-30T19:18:20Z

Basic Thermostat

Admin : /* Basic Thermostat */

2025-04-30T16:58:41Z

Basic Thermostat

Admin : /* Basic Thermostat */

2025-04-30T16:54:15Z

Basic Thermostat

← Version précédente		Version du 30 avril 2025 à 21:25
Ligne 132 :		Ligne 132 :

	In such case, the forced mode could be used to switch between day-time and night-time (with the corresponding temperature).		In such case, the forced mode could be used to switch between day-time and night-time (with the corresponding temperature).
−
−
−	~~{{traduction}}~~

@@ Ligne 43 : / Ligne 43 : @@
 Pressing the '''Forced''' button will restart the heating process and the forced state will automatically disabling when the temperature is reached.
-{{underline|Remarks:}} forced state can also be used during a normal heating process to stop it. In such case, the forced state will get disabled when the lower temperature is reached.
+{{underline|Remarks:}}<br />Forced state can also be used during a normal heating process to stop it. In such case, the forced state will get disabled when the lower temperature is reached.
 == The code ==

← Version précédente		Version du 30 avril 2025 à 21:24
Ligne 44 :		Ligne 44 :

	{{underline\|Remarks:}} forced state can also be used during a normal heating process to stop it. In such case, the forced state will get disabled when the lower temperature is reached.		{{underline\|Remarks:}} forced state can also be used during a normal heating process to stop it. In such case, the forced state will get disabled when the lower temperature is reached.
		+
		+
		+	== The code ==
		+
		+	Here is the code of [https://github.com/mchobby/micropython-mydin/blob/main/examples/backplanes/TwoRelay3Mod/async-thermostat2.py thermostat2.py] available in the repository.
		+
		+	<syntaxhighlight lang="python" line>
		+	from mydin import configure
		+	from mydin.pico import Pico3Mod
		+	from mydin.backplane.relays import TwoRelay3Mod
		+	from hyst import HeaterTh
		+	import time, sys, asyncio
		+
		+	# Which Controler + Backplane to use
		+	din = configure( Pico3Mod, TwoRelay3Mod )
		+	thermostat = HeaterTh( 25, 2 ) # Thermostat
		+	forced = None # Forced state (High=True,Low=False,None=None)
		+	last_print = 1
		+
		+	# === OneWire bus & DS18B20 ===================
		+	# When running DinControler asynchronously, a task
		+	# is created to capture the DS18B20 temperature!
		+	# The AsyncIO task is scheduled every 60 seconds
		+	# (see pico.py; DS18B20_UPDATE_TIME)
		+
		+	async def loop( din ):
		+	""" called again and again (like Arduino) """
		+	global thermostat, forced, last_print
		+	if din.temp_ds18b20==None:
		+	await asyncio.sleep( 2 )
		+	return
		+
		+	# User Force state change ?
		+	if din.was_pressed( 0 ):
		+	forced = not(din.rel1.value())
		+
		+
		+	# Ask to reset forced state ?
		+	if din.was_pressed( 1 ):
		+	forced = None
		+
		+	# Increate / decrease setpoint
		+	if din.was_pressed( 2 ):
		+	thermostat.setpoint -= 1
		+	print( 'setpoint @ %i °C' % thermostat.setpoint )
		+	din.led2.on()
		+	await asyncio.sleep_ms( 300 )
		+	din.led2.off()
		+	if din.was_pressed( 3 ):
		+	thermostat.setpoint += 1
		+	print( 'setpoint @ %i °C' % thermostat.setpoint )
		+	din.led3.on()
		+	await asyncio.sleep_ms( 300 )
		+	din.led3.off()
		+
		+	# IF forced THEN apply forced state
		+	if forced != None:
		+	heat = forced
		+	# Should we auto-reset the forced state
		+	if (forced == thermostat.update( din.temp_ds18b20) ):
		+	forced=None # Reset forced state
		+
		+	# IF not forced THEN follow thermostat
		+	if forced==None:
		+	heat = thermostat.update( din.temp_ds18b20 )
		+
		+	din.led1.value( forced!=None )
		+	din.led0.value( heat )
		+	din.rel1.value( heat )
		+
		+	# print status once every 2 seconds
		+	if time.ticks_diff( time.ticks_ms(), last_print )>2000:
		+	print( "[%s] %s °C - %s - %s" % (thermostat.setpoint, din.temp_ds18b20, "Heat" if heat else "...", "(forced)" if forced!=None else "") )
		+	last_print = time.ticks_ms()
		+
		+	await asyncio.sleep_ms( 100 )
		+
		+
		+	din.setup( setup=None, loop=loop )
		+	din.run()
		+	</syntaxhighlight>
		+
		+	== Improve it ==
		+
		+	In house, thermostat are associated with a scheduler used to define one or more day-time hours range for heating (the remaining being the night-time).
		+
		+	Some advanced thermostat can defines a day temperature and night temperature.
		+
		+	In such case, the forced mode could be used to switch between day-time and night-time (with the corresponding temperature).
		+
		+
		+	{{traduction}}

@@ Ligne 35 : / Ligne 35 : @@
 === Forced Mode ===
-Lets say
+From the previous example here upper
-Forced state is canceled when the temperature reach the setpoint temperature corresponding the forced state.
+Lets say the heater already reached 27.5°C and the heather stopped.
-Let say that
+The temperature is now 25°C and you are already frozen... unfortunately the heater will not restart before the temperature falls under 22.5°C.

@@ Ligne 34 : / Ligne 34 : @@
 === Forced Mode ===
 Forced state is canceled when the temperature reach the setpoint temperature corresponding the forced state.
 Let say that

@@ Ligne 7 : / Ligne 7 : @@
 * {{pl|2737|DINCASE-2R-BP3MOD}} : 2 relays backplane
 * {{pl|151|TMP-DS18B20-WP}} : a DS18B20 OneWire temperature sensor.
 [[Fichier:MyDin-3modules.jpg|640px]]
@@ Ligne 31 : / Ligne 25 : @@
 Current temperature, setpoint temperature and relay state is displayed in the REPL session.
-{{underline|'''Important remark''':}}<br />
+=== Hysteresis ===
 Forced state is canceled when the temperature reach the setpoint temperature corresponding the forced state.
 Let say that

@@ Ligne 7 : / Ligne 7 : @@
 * {{pl|2737|DINCASE-2R-BP3MOD}} : 2 relays backplane
 * {{pl|151|TMP-DS18B20-WP}} : a DS18B20 OneWire temperature sensor.
 [[Fichier:MyDin-3modules.jpg|640px]]
@@ Ligne 14 : / Ligne 20 : @@
 [[Fichier:MyDin-3modules-usage.jpg]]
-#  * DS18B20 is connected to 1Wire port
+* LED 1 reflect the Rel 1 state (so heating state).
-#  * Rel 1 control the Heater
+* LED 2 is lit while a FORCED forced is currently active
-#  * LED 1 reflect the Rel 1 state.
+* LED 3 will blink once to acknowledge T° increase.
+* LED 4 will blink once to acknowledge T° decrease.
-#  * Button 1 invert (force) the state of the relay.
+* BUTTON 1 reverse (force) the current state of the relay.<br />When the relay is ON then it switch it off.<br />When the relay is OFF then is switch it on.
-#  * Forced state is canceled with the thermostat state reach the forced state
+* BUTTON 2 cancel the forced state.
-#  * Forced state is canceled when the button 2 is pressed.
+* BUTTON 3 will decrease the setpoint T° of 1 degree.
-#  * LED2 is lit while a forced state do applies
+* BUTTON 4 will increase the setpoint T° of 1 degree.
-#  * button 3 will decrease the setpoint T°. Led 3 will blick once to acknowledge.
-#  * button 4 will increase the setpoint T°. Led 4 will blink once to acknowledge.
+Current temperature, setpoint temperature and relay state is displayed in the REPL session.

← Version précédente		Version du 30 avril 2025 à 19:18
Ligne 11 :		Ligne 11 :

	The temperature sensor takes the room temperature and the heater is controled by the relay 1.		The temperature sensor takes the room temperature and the heater is controled by the relay 1.
		+
		+	[[Fichier:MyDin-3modules-usage.jpg]]

	# * DS18B20 is connected to 1Wire port		# * DS18B20 is connected to 1Wire port

@@ Ligne 4 : / Ligne 4 : @@
 This project implements a basic temperature control system from a 3 modules MyDin made of:
-* DINCASE-MB3PICO
+* {{pl|2807|DINCASE-MB3PICO}} : controler based on Raspberry-Pi Pico
+*  {{pl|2737|DINCASE-2R-BP3MOD}} : 2 relays backplane
 [[Fichier:MyDin-3modules.jpg|640px]]