Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.




2769 posts

Uber Geek
+1 received by user: 99


# 242369 24-Oct-2018 21:11
Send private message quote this post

Hi

 

Been doing a lot of home automation stuff around the house.

 

Currently my heat pump uses the following to interact with my home hub.

 

Broadlink RM Mini3 IR Blaster

 

Xiaomi door sensor - to sense whether the heat pump is on or off (via the vent opening)

 

Home automation via home assistant integrating the above with some automations to check the heat pump received the on / off signal and resend if it fails etc.

 

 

 

I know a few people are interfacing the mitsi heat pumps via a serial interface and a pi or esp8266 or similar.  Is anyone doing this with a panasonic heat pump.  I'd much prefer to control it via the serial interface.





HTPC: Intel i3-2100 / 12GB RAM / AMD HD7750 / 480 GB SSD / 58TB Storage / MediaPortal / MadVR / Win10
AVR: Pioneer Elite SC-LX87 220W 9.2 Ch AVR
Speakers: Wharfedale Jade 7 Fronts / Jade 2c Center / Jade 5 Rears
Subs: iNuke 3000dsp 3000W proamp with 4x 15" JBL Sealed Subs
Display: Samsung 60" UA60H6400 LCD TV
Accessories: Gefen HDMI Detective with splitter


Create new topic
196 posts

Master Geek
+1 received by user: 11

Lifetime subscriber

  # 2113533 24-Oct-2018 22:38
Send private message quote this post

Interesting - Does your Panasonic Heat Pump have a standard RS232 serial port with a published command API?

 

I have a Panasonic 3D Projector which has a rear RS232 port and the commands are published in the operators manual.

 

I recently built myself an ESP8266 Wifi controllable RS232 port where the projector is now controlled by Wifi http commands that are converted into true RS232 commands.

 

Building the circuit board and writing the code for a Wifi controllable RS232 port is not quick job but can be done quite cheaply if you have the skills.

 

 


315 posts

Ultimate Geek
+1 received by user: 18


  # 2113554 24-Oct-2018 23:46
Send private message quote this post

datahawk:

 

Interesting - Does your Panasonic Heat Pump have a standard RS232 serial port with a published command API?

 

I have a Panasonic 3D Projector which has a rear RS232 port and the commands are published in the operators manual.

 

I recently built myself an ESP8266 Wifi controllable RS232 port where the projector is now controlled by Wifi http commands that are converted into true RS232 commands.

 

Building the circuit board and writing the code for a Wifi controllable RS232 port is not quick job but can be done quite cheaply if you have the skills.

 

Not wanting to take this off topic but wondering if you used any specific packages or firmware on your ESP8266 for your wifi > RS232? Or coded from scratch?

 

 

 

To the original post - I don't know for Panasonic but for Daikin I bought an additional Daikin box which connected internally to S21 (serial?) and gives wifi control. Their app is a bit naff but can be used over http - and works with Home Assistant.


 
 
 
 


142 posts

Master Geek
+1 received by user: 47


  # 2113565 25-Oct-2018 06:24
Send private message quote this post

I also have a couple of Panasonic heat pumps and was awaiting the Broadlink to arrive so that I could start communicating with them via Home Assistant. Interesting to hear the measures you have to take to check its status etc. Keen to hear if anyone else has had success with controlling or interfacing with Panasonic Heatpumps. Happy to chip in/sponsor a portion of the coding venture if someone has the skills or know how to build something like this.


196 posts

Master Geek
+1 received by user: 11

Lifetime subscriber

  # 2113645 25-Oct-2018 10:19
Send private message quote this post

phrozenpenguin:

 

Not wanting to take this off topic but wondering if you used any specific packages or firmware on your ESP8266 for your wifi > RS232? Or coded from scratch?

 

 

I build a lot of ESP8266 devices and prefer to write all of my code, mostly Arduino based, for them where possible.

 

The code required for the ESP8266 Wifi-RS232 devices took a while to perfect with a lot of trial and error but I now have several of these Wifi-RS232 ports driving RS232 SMS Modems 24/7 in my office.

 

(I built these units to do away with having to use serial cables connected to a specific computer to control modems. Now most RS232 serial devices can be controlled by any server or workstation on the network just by sending http commands to their specific IP addresses.)

 

Regarding this topic - I am interested to know if anyone's heat pumps, (Panasonic, Mitsubishi or other) have serial ports hidden away and if anyone has a published specification of the commands?

 

I have 5 x Mitsubishi units (A large 4-Split unit and another single unit) that do have some sort of serial connector somewhere but I have yet to find any specification of how these operate. These pumps are all currently controlled with IR signals and some are again driven with custom built Wifi ESP8266 IR Sender units.


142 posts

Master Geek
+1 received by user: 47


  # 2113649 25-Oct-2018 10:24
Send private message quote this post

I will definitely have a look when I get home. I'm very curious to know if there is a service port.

 

I'd be keen to use one of my Particle Photons for this as they're tiny and would be perfect.




2769 posts

Uber Geek
+1 received by user: 99


  # 2113653 25-Oct-2018 10:28
Send private message quote this post

Regarding serial control and mitsibishi.

https://nicegear.nz/blog/hacking-a-mitsubishi-heat-pump-air-conditioner/

And Google cn105 heat pump for some more results.

Not much information on Panasonic.




HTPC: Intel i3-2100 / 12GB RAM / AMD HD7750 / 480 GB SSD / 58TB Storage / MediaPortal / MadVR / Win10
AVR: Pioneer Elite SC-LX87 220W 9.2 Ch AVR
Speakers: Wharfedale Jade 7 Fronts / Jade 2c Center / Jade 5 Rears
Subs: iNuke 3000dsp 3000W proamp with 4x 15" JBL Sealed Subs
Display: Samsung 60" UA60H6400 LCD TV
Accessories: Gefen HDMI Detective with splitter


196 posts

Master Geek
+1 received by user: 11

Lifetime subscriber

  # 2113657 25-Oct-2018 10:33
Send private message quote this post

kiwijunglist: Regarding serial control and mitsibishi.

https://nicegear.nz/blog/hacking-a-mitsubishi-heat-pump-air-conditioner/

And Google cn105 heat pump for some more results.

Not much information on Panasonic.

 

Nice Find! - I'll be investigating those interfaces - Thanks.




2769 posts

Uber Geek
+1 received by user: 99


  # 2113672 25-Oct-2018 10:38
Send private message quote this post

Your WiFi serial interface sounds good.

Might be able to have someone hack/probe my Panasonic heat pump remotely as it's probably beyond my ability




HTPC: Intel i3-2100 / 12GB RAM / AMD HD7750 / 480 GB SSD / 58TB Storage / MediaPortal / MadVR / Win10
AVR: Pioneer Elite SC-LX87 220W 9.2 Ch AVR
Speakers: Wharfedale Jade 7 Fronts / Jade 2c Center / Jade 5 Rears
Subs: iNuke 3000dsp 3000W proamp with 4x 15" JBL Sealed Subs
Display: Samsung 60" UA60H6400 LCD TV
Accessories: Gefen HDMI Detective with splitter


196 posts

Master Geek
+1 received by user: 11

Lifetime subscriber

  # 2113750 25-Oct-2018 12:11
Send private message quote this post

kiwijunglist: Your WiFi serial interface sounds good.

Might be able to have someone hack/probe my Panasonic heat pump remotely as it's probably beyond my ability

 

You could be lucky with your Panasonic A/C if it's a relatively recent model. Finding the interface connection and command specs will be the main problem.

 

Sadly, after some study (thanks to your very useful links), all of my Mitsubishi units are MSZ-FA 2006 models and they don't have the CN105 serial interface connector on board so I'm stuck with IR control only.

 

However, IR is not an issue because they have been automated that way for many years already with custom built temperature sensors integrated into my home/office automation systems that start, stop and set A/C units as required with 'learned' IR command strings.

 

It would have been nice to get settings feed back from a serial port.

 

(I run a Linux server 24/7 which is the central controller for most of my sensors and office/home/workshop automated systems.)

 

Best of luck with your quest.

 

Edit: Typos


2 posts

Wannabe Geek


  # 2215867 12-Apr-2019 16:38
Send private message quote this post

Hey guys, first post. I've just installed a second hand Panasonic heat pump (CS-E24PKR) and am really keen to get some automated control over it. I got a quote for the Intensis wifi module that plugs into the CNT-CN connector on the main board of the indoor unit, $420!!! I made up a plug for the CNT-CN connector which can be located/accessed with help from the service manual (details here, I purchased this and this) and I've hooked it up to a scope borrowed from work but I see no UART comms at all, presumably you have to first send the magic string as this page shows (for a different model). Tried sending the string from that page but no luck.

 

Anyhow, I'm really hoping to get some details of the comms protocol so I can whip up a wifi controller using ESP chip which I would obviously make available to anyone who wanted to replicate it. I don't suppose anyone has an Intensis unit that they'd be willing to lend for a week so I can sniff the data? Compatible units are:

 

• PA-AC-BAC-1
• PA-AC-ENO-1i
• PA-AC-ENO-1iC
• PA-AC-KNX-1i
• PA-AC-MBS-1 (this one is ModBus)
• PA-AC-WMP-1 (this one is WiFi)

 

Cheers

 

 

 

 


2 posts

Wannabe Geek


  # 2215869 12-Apr-2019 16:42
Send private message quote this post

Wow bit of a link fail there.

 

UART info and magic packet for different model

 

Pre-crimped cables for connector

 

Plug for connector

 

Service manual


Create new topic



Twitter »

Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:





News »

Video game market in New Zealand passes half billion dollar mark
Posted 24-May-2019 16:15


WLG-X festival to celebrate creativity and innovation
Posted 22-May-2019 17:53


HPE to acquire supercomputing leader Cray
Posted 20-May-2019 11:07


Techweek starting around NZ today
Posted 20-May-2019 09:52


Porirua City Council first to adopt new council software solution Datascape
Posted 15-May-2019 12:00


New survey provides insight into schools' technology challenges and plans
Posted 15-May-2019 09:30


Apple Music now available on Alexa devices in Australia and New Zealand
Posted 15-May-2019 09:11


Make a stand against cyberbullying this Pink Shirt Day
Posted 14-May-2019 20:23


Samsung first TV manufacturer to launch the Apple TV App and Airplay 2
Posted 14-May-2019 20:11


Vodafone New Zealand sold
Posted 14-May-2019 07:25


Kordia boosts cloud performance with locally-hosted Microsoft Azure ExpressRoute
Posted 8-May-2019 10:25


Microsoft Azure ExpressRoute in New Zealand opens up faster, more secure internet for Kiwi businesses
Posted 8-May-2019 09:39


Vocus Communications to deliver Microsoft Azure Cloud Solutions through Azure ExpressRoute
Posted 8-May-2019 09:25


Independent NZ feature film #statusPending to premiere during WLG-X
Posted 6-May-2019 22:13


The ultimate dog photoshoot with Nokia 9 PureView #ForgottenDogsofInstagram
Posted 6-May-2019 09:41



Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.


Support Geekzone »

Our community of supporters help make Geekzone possible. Click the button below to join them.

Support Geezone on PressPatron



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.