Problem with binary sensor

[dhanjel 7]

I have a Philips AJ3115 clock radio and a binary sensor.

The first red cable is connected to the power (5V+)

The second blue cable is connected to the ground

The third yellow cable is connected to the speaker (+)

The forth green cable is not used

The following three (brown, white, blue) is connected to a temperature sensor.

The last antenna cable is untouched.

The sensor is added correctly in HC and the temperature sensor works fine, but the input is always "armed". Both the one that is connected and the one that I have not connected at all.

If I measure between the ground and the speaker, I always have a current, which is odd? I've tried different ground points on the circuit without any luck.

Any ideas?

Please login or register to see this attachment.

Please login or register to see this attachment.

[Lambik 194]

You are trying to do this?

Please login or register to see this link.

[dhanjel 7]

Yeah, but apparently I have à different revision. The circuit boarding differs.

[Lambik 194]

Can you take a picture from the circuitboard underside, so we can see where you put the wires?

What I read from the RobbShop manual there should be 6Vdc. Also, why do you connect a wire to a speaker? That can't be right....

Please login or register to see this image.

The blue and green wire are for the binary inputs.

The red and blue are for the power source.

The inputs are acting normally closed.

[dhanjel 7]

I couldn't find a good point for connecting the input, but that is probably due to my problem with current on the input all the time. The speaker was a last-resort solution since it only has a current when on. (I do not intend to use it as a radio).

To correct you, blue is ground for both wires. Yellow and green is input.

On the attached photo, the ground is not connected (but I placed the wire where the ground is). I removed the cable when I was troubleshooting yesterday.

[ Added: 2014-02-23, 10:33 ]

If I only connect the first two wires to +5v and GND and then measure between ground and any of the input wires (yellow/green), without connecting them, I get around 2.4v. Is this correct?

Please login or register to see this attachment.

[Lambik 194]

What is the input voltage (is an adapter used for powersupply)?

What I read from the Robbshop manual, the input voltage for the binary sensor shouldn't be less then 6 Vdc.

I don't have any experience with a binary inputmodule or the Philips alarmradio, so I'm a bit guessing here....

[dhanjel 7]

It also says that 5v seems to be sufficient (or if it was another guide I've read). Anyhow, I changed the sensor to normaly open, which sounds more correct but I still can't find a good connection point to get the alarm trigger.

[mpatel0902 0]

dhanjel,

Check advance setting of universal sensor and select Alarm mode = normal

Please login or register to see this attachment.

[lolomail 0]

I did this modification this week-end and I had the same issue, new PCB board version so you couldn't follow Robbshop information.

For having your universal sensor as always detecting something, it's probably due to setup of input 1 and 2 where you can select NC or NO.

For modification of clock alarm, what I did:

- Take the signal (around 2v, constant signal when alarm is running) from point SP1 (corresponding to alarm 1),

- Send this signal to a 2k resistor, after go to a BC547 which control a 6v relay connected to input 1,

It's working on mine but try that will all warning that are needed, electronic is not my job so be care full with what is write and what you are doing.

[dhanjel 7]

A wonderful, I´m not alone

Please login or register to see this image.

/emoticons/default_smile.png" alt=":)" srcset="https://forum.fibaro.com/uploads/emoticons/[email protected] 2x" width="20" height="20" />

I thought this was possible to do without additional components? Robbshop did not seem to have them?

Is this a correct shopping list?

Please login or register to see this link.

Please login or register to see this link.

Please login or register to see this link.

[ Added: 2014-02-25, 11:48 ]

What input is required for the sensor to trigger, is the 2v signal enough to connect directly to input 1?

[lolomail 0]

Hello,

You can find pictures of my modification at

Please login or register to see this link.

Concerning components;

For resistor, 0.1% resistor can be replaced by a 5% without any problem.

For BC, I used a BC547C.

For relay, I used a 6vdc 0.2w relay (

Please login or register to see this link.

)

Do not forget the 1n4148 in parrallel to the relay coil

Now for using 2v directly on input 1, for me, the universal sensor need a NC/NO contact, it can't be controled by 2v directly, but perhaps I'm wrong, if some one can confirm

Please login or register to see this image.

/emoticons/default_icon_wink.gif" alt=";-)" /> .

[Drago 0]

Hello,

I have a problem, I did exactly as you specify. Works, but my relay „clicks” even when I turn ON radio. When I set the alarm for a specific time also „clicks”, but why wen ON/OFF? What am I doing wrong? ON/OFF also activates the scene…

Please login or register to see this image.

/emoticons/default_sad.png" alt=":(" srcset="https://forum.fibaro.com/uploads/emoticons/[email protected] 2x" width="20" height="20" />

[lolomail 0]

Don't know, I'm not using the radio of the clock alarm, only the buzz.

Perhaps it's due to clock alarm main diagram but as I haven't find it this will be not easy to understand why.

The only solution that I see for the moment don't use radio.

[Drago 0]

thx for resp...

Please login or register to see this image.

/emoticons/default_smile.png" alt=":)" srcset="https://forum.fibaro.com/uploads/emoticons/[email protected] 2x" width="20" height="20" />

[KristianO 15]

Anyone suceeded? I'd like this too.