greg801

On 10/11/2021 at 4:35 PM, bklein said:

“- if I connect the headphone (computer) cable to the Noxa800 and at the end of the handset (the signal is heard in the headphones) I cut the cable and solder it to the system, vibration works great on the signals.“

you lost me with this paragraph.  What computer cable? What handset? What system?

I used the computer gaming headphones "Razer Kraken" at hand and for the test at the handset I cut the cable, soldered to a small amplifier which is powered by a battery and connected to a vibration motor through the bridge. There was no sound of the loudspeaker in the detector, but when there is metal above the coil, the motor vibrates. If there is nothing, the motor turns slightly.

17 hours ago, Jeff McClendon said:

The added vibration mod in the Polish YouTube video was great added to the Excalibur. Something like that could be added to an Equinox. However, I am going to repeat.....I would not dive with an Equinox. Yes it is listed as waterproof to 3 meters. There have been far too many reports of the Equinox control box not being waterproof to 3 meters or even 3 centimeters. If you want to work underwater, you should be using a detector that is specifically made for that. The Equinox is very versatile but there are far better detectors for diving than the Equinox especially in saltwater. As another poster mentioned, I would buy a Nokta Makro Simplex (US $254) or the Nokta Makro Pulse Dive (US $160) which both have built in vibration instead of diving/snorkeling with an Equinox. You may spend more than that just to get vibration on your Equinox.

I have already dipped the Equinox 800 several times and everything is fine, I know that in deeper water in the lakes there are signals, but you need to know what and at what depth on the bottom. I plan to do so up to 2.5 m in the vicinity of the bathing beach and piers. Hence the need for vibration. I have Simplex + nice machine but not everything, Nox800 yes 🙂

On 10/11/2021 at 12:47 PM, PimentoUK said:

Quote:"Why is it that the vibration does not work directly on the cable and it works through the headphone cable?"

I see the problem here. The Equinox uses electronic switching to determine if headphones are plugged in, then it mutes the internal loudspeaker and drived the headphones.
It measures the load placed on the Right channel, that is between the 'ring' and the 'ground' of the stereo plug. My experiments show 50 Ohms or less is needed to trigger the switch-over circuitry.
Probably the simplest method for you is to short the 'ring' to ground, and use the Left channel ( 'tip' ) to ground as your audio source.

I think the WM08 module would work underwater if it were placed very close to the control-box, so there was minimal water between them. The radio antenna in the control box is along the top edge, centrally positioned. The WM08 would probably need to be fitted into a watertight enclosure, I don't have one, so I'm unsure of it's water rating.

I can't help much with the loop / WM08 issue. The module has stereo output, is it possible to use both L and R to drive the loop, either by directly joining them, or with a pair of low-value resistors ( under 10 Ohms ? ) to isolate L and R.

Is the loop a low resistance ? Perhaps a series resistor may make it easier on the WM08.

I connected a mass resistor with the right channel, the motor rotates slightly and when there is a signal on the coil, it vibrates strongly, only it bothers me that the motor vibrates slightly.

18 hours ago, Johnnysalami1957 said:

How about using a shrouded bright led so it can be seen in bright light?

This way, I can miss interesting signals, I would have to look at the LED all the time.

On 10/13/2021 at 9:11 AM, Jeff McClendon said:

Bone conduction headphone can be wireless or wired and vibrate through the cheek bones. There are water proofed versions too. 

I can't find such waterproof headphones

13 minutes ago, Jeff McClendon said:

Are bone conduction headphones a possibility for you?

Not. I have hearing aids, but they are not waterproof

On 10/11/2021 at 4:35 PM, bklein said:

“- if I connect the headphone (computer) cable to the Noxa800 and at the end of the handset (the signal is heard in the headphones) I cut the cable and solder it to the system, vibration works great on the signals.“

you lost me with this paragraph.  What computer cable? What handset? What system?

"Razer Kraken" computer headphones

On 10/11/2021 at 12:47 PM, PimentoUK said:

Quote:"Why is it that the vibration does not work directly on the cable and it works through the headphone cable?"

I see the problem here. The Equinox uses electronic switching to determine if headphones are plugged in, then it mutes the internal loudspeaker and drived the headphones.
It measures the load placed on the Right channel, that is between the 'ring' and the 'ground' of the stereo plug. My experiments show 50 Ohms or less is needed to trigger the switch-over circuitry.
Probably the simplest method for you is to short the 'ring' to ground, and use the Left channel ( 'tip' ) to ground as your audio source.

I think the WM08 module would work underwater if it were placed very close to the control-box, so there was minimal water between them. The radio antenna in the control box is along the top edge, centrally positioned. The WM08 would probably need to be fitted into a watertight enclosure, I don't have one, so I'm unsure of it's water rating.

I can't help much with the loop / WM08 issue. The module has stereo output, is it possible to use both L and R to drive the loop, either by directly joining them, or with a pair of low-value resistors ( under 10 Ohms ? ) to isolate L and R.

Is the loop a low resistance ? Perhaps a series resistor may make it easier on the WM08.

Thanks for the tip.

I found something like this: https://youtu.be/iShD8pGeYR8?t=136

Hello, I am looking for a solution on how to vibrate the Equinox 600/800 detector for a deaf person who will use it underwater. As you know, a deaf person wears hearing aids that are not waterproof and cannot be immersed under water, and in these headphones he is not able to hear the signals, too much hearing loss is about 95dB.

I did a few attempts with a small amplifier and vibration motor from an old cell phone, but there are problems:

- after connecting the system to the Nox800 on the cable, the motor makes a slight buzzing noise but does not react to the metal signal in the coil,

- after connecting the system to the WM08 wireless module, the vibration works great on signals, but unfortunately after the detector is submerged under water, it loses the wireless connection.

- if I connect the headphone (computer) cable to the Noxa800 and at the end of the handset (the signal is heard in the headphones) I cut the cable and solder it to the system, vibration works great on the signals.

Why is it that the vibration does not work directly on the cable and it works through the headphone cable?
Is there anyone on the forum who will cover this topic?

One more thing. The deaf person uses an induction loop instead of headphones, which works with the hearing aid above the water and on the ground.
This loop connected to the detector via the cable is perfect, but when it is connected to the WM08, a buzzing can be heard in the background. How to do it to eliminate interference?