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Search took 0.00 seconds. Search: Posts Made By: Acuario
Forum: Geothermal & Heat Pumps 12-03-17, 01:38 AM
Replies: 91
Views: 71,789
Posted By Acuario
Yes you are correct, everyone has their own...

Yes you are correct, everyone has their own goals. The problem with the inverter is that the control system is so complex that the effort/reward for the 'community' is too high and I don't think it...
Forum: Geothermal & Heat Pumps 11-13-17, 01:38 PM
Replies: 91
Views: 71,789
Posted By Acuario
After much deliberation I have decided to abandon...

After much deliberation I have decided to abandon my efforts to build a controller for an inverter machine.

I achieved my initial goal which was to decode the protocol of a Daikin machine and...
Forum: Geothermal & Heat Pumps 04-04-17, 11:41 PM
Replies: 91
Views: 71,789
Posted By Acuario
Nope, look like they have gone :-( There are...

Nope, look like they have gone :-(

There are quite a few hacks around simulating remote controls now. Search for IR Blaster. Mostly are for TV's and audio but HVAC ones are appearing too. There...
Forum: Geothermal & Heat Pumps 01-13-14, 02:48 PM
Replies: 91
Views: 71,789
Posted By Acuario
I finally have some time to go back to playing...

I finally have some time to go back to playing with the Daikin. Hopefully some progress soon.

On my trawling of the internet I came across this from Danfoss which is interesting for anyone looking...
Forum: Geothermal & Heat Pumps 04-20-13, 07:52 AM
Replies: 91
Views: 71,789
Posted By Acuario
That is pretty much what I was doing - I used my...

That is pretty much what I was doing - I used my pc to control the external machine. The internal bits were still connected as it provided me the interface from the rs232 to the external box - this...
Forum: Geothermal & Heat Pumps 09-29-12, 06:31 AM
Replies: 91
Views: 71,789
Posted By Acuario
It's been a while since I posted about my...

It's been a while since I posted about my progress with controlling the Daikin; the summer has been hot and busy so I've had little time to play. I did start developing the control system with a PIC...
Forum: Geothermal & Heat Pumps 05-23-12, 12:33 AM
Replies: 91
Views: 71,789
Posted By Acuario
In theory it should be fine. I did have problems...

In theory it should be fine. I did have problems trying to use 1 chip for both TX and RX though, that's why I reverted to 2. Try it and see - if it doesn't work try a MC1489 on the RS232 TXD leg.
...
Forum: Geothermal & Heat Pumps 05-13-12, 12:50 PM
Replies: 91
Views: 71,789
Posted By Acuario
I've had a couple more hours free to play a bit. ...

I've had a couple more hours free to play a bit. I've now tidied up my program and removed loads of duplicated stuff, I've also cracked what is going on in some more of the frames.

I can now...
Forum: Geothermal & Heat Pumps 05-11-12, 12:32 AM
Replies: 91
Views: 71,789
Posted By Acuario
You'll probably need to build a level converter...

You'll probably need to build a level converter interface (something like in my schematic using MAX232 and MC1489) to interface to the 5V logic - RS232 is +/-12V signalling so you can't connect...
Forum: Geothermal & Heat Pumps 05-10-12, 03:22 PM
Replies: 91
Views: 71,789
Posted By Acuario
The only answer I can give you is that it could...

The only answer I can give you is that it could be absolutely anything.

What you need to do is open the machine up and find out where the data wire goes/what it connects to and based on that you...
Forum: Geothermal & Heat Pumps 05-09-12, 10:20 AM
Replies: 91
Views: 71,789
Posted By Acuario
You'ld be very lucky to see what is going on - an...

You'ld be very lucky to see what is going on - an oscilloscope or logic analyser are the only way. You'll then see something akin to the picture below. From there you can start analysing the pulse...
Forum: Geothermal & Heat Pumps 05-09-12, 10:14 AM
Replies: 91
Views: 71,789
Posted By Acuario
Although it's not the method I'm using I would...

Although it's not the method I'm using I would tend to agree with S-F. In the thread you pointed us to on refrigeration-engineer the reason he didn't follow that route was lack of feedback. The...
Forum: Geothermal & Heat Pumps 05-09-12, 12:35 AM
Replies: 91
Views: 71,789
Posted By Acuario
Here it is. The device that interfaces from the...

Here it is. The device that interfaces from the TTL logic to the power leads is the HF6 3EB - probably a custom device as I can't find any reference to it anywhere. The rest is just basic RS232 to...
Forum: Geothermal & Heat Pumps 05-07-12, 12:59 AM
Replies: 91
Views: 71,789
Posted By Acuario
There are 2 frames that report the relevant...

There are 2 frames that report the relevant temperatures the units are seeing, one from the external machine that looks like it reports 4 temperatures, one being the sensor close to the evaporator,...
Forum: Geothermal & Heat Pumps 05-07-12, 12:49 AM
Replies: 91
Views: 71,789
Posted By Acuario
A programmers manual would have been great but...

A programmers manual would have been great but much less fun!

Remote control data frames aren't too long if I remember correctly. One of my first ever hacks when I was in my mid teens was an...
Forum: Geothermal & Heat Pumps 05-06-12, 02:24 PM
Replies: 91
Views: 71,789
Posted By Acuario
I've made some pretty significant progress since...

I've made some pretty significant progress since my last post - shut in my shed for the last 2 days with a pc/logic analyser/oscilloscope etc...

I can nowcommunicate with the machine and turn it...
Forum: Geothermal & Heat Pumps 04-18-12, 02:46 PM
Replies: 91
Views: 71,789
Posted By Acuario
Ok, probably 1200 baud - my logic probe has an...

Ok, probably 1200 baud - my logic probe has an auto baud function and it reported 1204; near enough.

I'm using the trace and compare brute force thing to work out what's going on - must be 20...
Forum: Geothermal & Heat Pumps 04-17-12, 08:32 AM
Replies: 91
Views: 71,789
Posted By Acuario
I'm making a bit of progress - here are some...

I'm making a bit of progress - here are some pictures to keep you interested...
The comms is based on RS232, runs at 1204 baud and is 8 bits, 2 stop bits, odd parity, LSB first, non inverted.

It...
Forum: Geothermal & Heat Pumps 04-11-12, 03:24 PM
Replies: 91
Views: 71,789
Posted By Acuario
As far as I'm aware the machine works. It was...

As far as I'm aware the machine works. It was unmounted, covered in cobwebs and in a garage and I know nothing of its history.The present owner of the house inherited it. The previous owner (who I...
Forum: Geothermal & Heat Pumps 04-11-12, 12:15 PM
Replies: 91
Views: 71,789
Posted By Acuario
The models are: External unit RXS71E3V1B ...

The models are:
External unit RXS71E3V1B
Internal unit FTX71EV1B

Compressor is 2YC63BXD
Forum: Geothermal & Heat Pumps 04-11-12, 10:29 AM
Replies: 91
Views: 71,789
Posted By Acuario
Controlling a DC inverter machine

As I have just been given a Daikin split system which has a DC compressor I started thinking about how to control it.

The threads I have read have all focussed on using controllers from various...
Showing results 1 to 21 of 21

 
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