The inside of the ws-1081

hans · **Posted:** Wed Nov 17, 2010 9:35 pm

Gina wrote:

To change the timing of the transmission you'd need to reprogram the transmitter microprocessor. I'd bet the microprocessor is not re-programmable.

regarding the spikes in the other thread,i experimented with my outdoor pcb and put a strip of aluminum between the cable connectors and the thermistor,in an attempt to shield it from static.
the strip is connected to the neg.of the batteries.
so far no good.still an ocassional spike.
however i did accidently got some solder removed between 1 connection of the cristal(i think,its the small thin metal one) and the to be connected resistor on the other side between the cable connectors and the battery
contacts.
result:led constantly on but no transmission,only one transmission with data when batteries are inserted but no update after 48 seconds.
so experimenting with that cristal or resistor "could" change the update time.

on the left you see the 000 resistor,the second most left(third from below)) from that one is the resistor and at 11 oçlock is the first cristal connection,that connection was broken.

Gina · **Posted:** Wed Nov 17, 2010 9:50 pm

I believe that to be the timing crystal for the microprocessor. With that disconnected everything comes to a halt. Yes, changing the crystal frequency would probably change the 48 second transmit timing but it would also change all the other timings making the data timing wrong and therefore wrecking the data structure.

hans · **Posted:** Wed Nov 17, 2010 10:03 pm

i see,makes sense.
fortunately you know more about microprocc.than i do,
analog is more my thing.
still was worth a shot.
back to the spike problem..

gadgetmadz · **Posted:** Tue Nov 30, 2010 4:44 pm

has anyone hardwired one of these txs to a rx? (ie not use wireless) if so what did you do?
The 433mhz version

ben-s · **Posted:** Tue Nov 30, 2010 6:17 pm

It should be possible, but you'd need to work out the pinout of the radio chips in both the transmitter and receiver. Given that at least the transmitter is usually encapsulated with resin, this could be tricky.
It might be easier on the 868 MHz W8681, as (at least on recent units) the Tx circuit is freely accessible and you can read part numbers.

In theory, you could intercept the data in the transmitter before it reaches the RF circuit and inject it into the receiver after the RF circuit. You'd also need to disable both radios.

Depending on what the radios do to the signal, and how they communicate with the main processor, you might need to process the signal with a microcontroller of some sort.

All in all, I think it would be quite a big job...

Gina · **Posted:** Tue Nov 30, 2010 6:40 pm

Yes indeed, I think it would be too. Probably easier to connect the sensors using something like 1-wire.

phtvs · **Posted:** Wed Dec 15, 2010 10:39 am

Hi,

I have an WS4000.

I wonder if it is possible to connect an additional temperature sensor to the station?

nitrx · **Posted:** Thu Dec 16, 2010 10:12 am

phtvs wrote:

Hi,

I have an WS4000.

I wonder if it is possible to connect an additional temperature sensor to the station?

No because the WS4000 from Alecto is exactly the same as a WS1080

L.F. · **Posted:** Sat Jan 01, 2011 2:30 pm

Because she hasn't changed the batteries in time, my wife has lost all the data on her unit on more than one occasion. Is it right that all the data disappears when the main AA batteries lose their power or is there a backup battery of some kind (although I can't find one from the photos of the inside of the 1081)?

Gina · **Posted:** Sat Jan 01, 2011 2:47 pm

The console memory is retained when there's no power (either battery or USB) but I don't know how long the memory data will last without power - I've never had power off long enough to find out.

L.F · **Posted:** Sat Jan 01, 2011 6:38 pm

The reason I asked is that, if there is a backup battery, it seems to need replacement. But I can't locate it!

Gina · **Posted:** Sat Jan 01, 2011 6:53 pm

I've not seen one when I've had my console apart. Maybe someone else knows. Is the memory working when there's power connected?

Tau Bootis · **Posted:** Sat Jan 01, 2011 7:44 pm

Hi
I think the memory is Non-volatile so there is no need for a battery backup.

Darknstormy · **Posted:** Mon Jan 03, 2011 1:44 am

hans wrote:

about the lights to be on always:
been testing and also made the mod.
when you connect a switch to the yellow dots,you can turn them on.
at these points they burn not at full power,but enough for constant lightning,they give a nice gentle green glow.

small edit.
i also marked the points if you want the leds go at full power(red dots,left red and left yellow are the same point)

Hey, have you noticed with this mod. if you click the light on the next pressure reading will make it drop about .4.. even with usb powered it still drops down for me, soon as i click the light off the pressure will pop back up at its next reading to where it was before i turned the light on

barrylight · **Posted:** Mon Jan 02, 2012 12:05 pm

Super pics.
Thank you.

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The inside of the ws-1081

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