Going Wireless

[SavingThePast]

here is my atpro setup. auvio 33-283 and I installed a resistor inside the connector so I wouldnt have to use an inline volume control. my atpro waterproof headphone connection is behind my armcuff now though with a mod I made...

 

[edlynne]

nice setup

saving the past, could you let me know how you put a resistor inside the connector. I would love to get rid of the inline volume also. I am not an expert on electronics but I would give it a try. Thanks

 

[jimz49]

I would like to use something like the following to construct the transmitter and receiver. The usb dongle for the transmitter. The usb to 3.5 male adapter to feed output from the detector headphone jack to the transmitter dongle. And the receiver to feed a set of headphones. Someone crafty enough could build a usb output on the detector for the dongle to plug into, eliminating the adapter.

 

[airscapes]

Don't think hacking the physical detector is wise, but a small adapter without the wire could be used..
http://www.amazon.com/A-szcxtop-3-5mm-Male-Female-Adapter/dp/B00FFQU70M

 

[HarveyH48]

I use the Avantree Bluetooth transmitter, it has a switch, so it can also be used as a receiver. Doubt your USB dongle would be feasible to use, maybe someone with more microcontroller experience could do something with it. The audio from you detector will be an analog signal, which would need to be digitized, and sent out one bit at a time (serial). Don't know what sort of timing, packets, or anything that the dongle would expect, to work. Most microcontrollers have the analog-digital-converter in hardware, some also have hardware USB support. I haven't messed with either, just know what's available. My programming skills aren't up to such a task.

 

[jimz49]

Harvey, you're probably right about the adapter not being sufficient to process the signal. My intent was to show physically comparable devices of what I would like to find that will work.
I've been watching Nokta's soon to released detector called the Racer. My understanding is they plan to sell a dongle device that plugs directly into the head of the detector that will provide a signal to a pair of wireless headphones. I found that to be interesting, because as far as I know they are the first to sell a separate dongle for wireless headphones. The others (Whites and Minelab) have their transmitter built into the detector.

 

[SavingThePast]

saving the past, could you let me know how you put a resistor inside the connector. I would love to get rid of the inline volume also. I am not an expert on electronics but I would give it a try. Thanks

it depends on how you are running your setup edlynne...without figuring out your setup what I can tell you is in order to get rid of the inline volume control you need to go to radio shack and buy a 10k ohm resistor. they come in little packs of 5 i believe and are only a couple bucks. they also come in different thicknesses and I just bought the thinnest they had. once you have the resistor it needs to be soldered in. one end gets soldered to the ground of the headphones jack and you can solder the other end to the left or right connection on the headphones jack. example: your transmitter has an 1/8 male jack coming off it. you can either open the transmitter up and solder in a wire lead to replace the jack or you can buy an 1/8 female jack, a section of wire and then a 1/4 male jack. You would then need to solder your wire to the 1/8 female jack and the other end of the wire to the 1/4 male and while doing so solder in the resistor. there are many ways to do this so I am really just trying to help you along so you can have the basics and figure out how you would like to do it.....hope that helps..

 

[Ricki7]

Edlynne what head phones do you use with this set up
HH

 

[SavingThePast]

Don't think hacking the physical detector is wise, but a small adapter without the wire could be used..
http://www.amazon.com/A-szcxtop-3-5mm-Male-Female-Adapter/dp/B00FFQU70M

Good Advice! I would make sure whatever someone does can be undone. When I did my setup it was because I hated the headphone connection placement and the cord always bothered me. I wanted the connection behind me while still being waterproof so decided to switch to the ctx waterproof connector because it was a perfect fit in the end of the garrett shaft. I then switched my gg amphibians over to the ctx connector which then killed two birds with one stone as the amphibians work worked prefect on my ctx and the atpro. It also made for a nice connection of the wireless setup.
I have a spare upper shaft so if the detector is ever needed to be sent in for any reason I simply unscrew the stock atpro headphone connector as usual and switch out the upper rod...

 

[edlynne]

HH. TDK WR 700 wireless headsets.

 

[edlynne]

STP thanks for the advice I will give it a try. Your setup is really nice going up through the handle and still keeping it waterproof. You should market them. I would be your first customer. Ed

 

[HarveyH48]

Harvey, you're probably right about the adapter not being sufficient to process the signal. My intent was to show physically comparable devices of what I would like to find that will work.
I've been watching Nokta's soon to released detector called the Racer. My understanding is they plan to sell a dongle device that plugs directly into the head of the detector that will provide a signal to a pair of wireless headphones. I found that to be interesting, because as far as I know they are the first to sell a separate dongle for wireless headphones. The others (Whites and Minelab) have their transmitter built into the detector.

A USB connector, is 4 wires, could be used to transfer power and the audio to a separate Bluetooth transmitter. Not really USB standard, connectors are cheap though. Not sure if they would go with a true USB, computer dongle, who would buy theirs, since the computer ones are almost free... They'd really miss out on profit potential.

My transmitter is about 2 inches diameter, half inch thick. Battery lasts much longer than I hunt. Velcroed to the detector. Takes 2-3 seconds to connect to the reciever.

 

[tinsmith]

I've been using Bluetooth for the past few years, work fine for me. Every time this comes in, at least one member will chime in about lag, latency, or delay. If it exists, it can be more than a couple of milliseconds. Might notice it watching a video, but not an issue talking on the phone, or metal detecting. Bluetooth 4.0 came out last year, so you might snag what you need on the cheap, as they clear out the older versions. My transmitter is 2.1, and will probably get a 3.0 or higher, if I see a good deal.

Great thing about Bluetooth, vast assortment of headphones, earbuds, earpieces to choose from. Also receivers to plug in your favorited corded versions. Most digital wireless solutions offered here, you are stuck with the headphones married to the transmitter, and you can't simply replace one or the other, you have to replace the whole setup. I use a single earpiece, just like leaving one ear open, and aware of whats going on around me.

I was wondering if this lag was minor. As you say miliseconds. A couple miliseconds is 2x10 to the negative 3 Of a second. How can someone notice that?
Tin

 

[Sod]

highland-innovation.com/metal-detector-radio-adaptor
See if this is what your looking for.
GL&HH

 

[HarveyH48]

I was wondering if this lag was minor. As you say miliseconds. A couple miliseconds is 2x10 to the negative 3 Of a second. How can someone notice that?
Tin

Guess some people are more sensitive than others. I pinpoint with my detector, target is usually where I expect it to be. Sometimes it gets moved around if I have some tough roots to cut through. Blame it on the roots and our sand-soil here.

When I was younger, I had a friend into stereo stuff, wanted my to try his $289 headphones, he thought was the best on earth... Really could hear any difference from my $40 pair. I was never really into cranking up the music though, maybe at high volume, is where you notice the difference... Point being, what you believe, effects what you perceive. I wasn't a loud stereo fan, so had no conception of what sort of difference I should have experienced. With Bluetooth, I just gave it a try, worked fine. Was until posting on here, that the 'horrible lag' was exposed. There is a thread here some where, that had actual numbers for the lag, and it was only a few milliseconds.

 

[tinsmith]

Guess some people are more sensitive than others. I pinpoint with my detector, target is usually where I expect it to be. Sometimes it gets moved around if I have some tough roots to cut through. Blame it on the roots and our sand-soil here.

When I was younger, I had a friend into stereo stuff, wanted my to try his $289 headphones, he thought was the best on earth... Really could hear any difference from my $40 pair. I was never really into cranking up the music though, maybe at high volume, is where you notice the difference... Point being, what you believe, effects what you perceive. I wasn't a loud stereo fan, so had no conception of what sort of difference I should have experienced. With Bluetooth, I just gave it a try, worked fine. Was until posting on here, that the 'horrible lag' was exposed. There is a thread here some where, that had actual numbers for the lag, and it was only a few milliseconds.

Thanks, I'm also not into loud audio and think the same way. I thought the lag thing was much more by the way it was mentioned. I passed up so many good deals at discount stores for Blue tooth headsets when out shopping with the wife. From now on I'm trying stuff on my gut instinct rather than over study/analyze these small matters.
Tin

 

[airscapes]

Thanks, I'm also not into loud audio and think the same way. I thought the lag thing was much more by the way it was mentioned. I passed up so many good deals at discount stores for Blue tooth headsets when out shopping with the wife. From now on I'm trying stuff on my gut instinct rather than over study/analyze these small matters.
Tin

Many devices have a lag time of 200ms or more, this would be WAY WAY too much lag for someone playing a video game.. and certainly to much for a MD.
I am not good with math but figure 2 ft per second swing. So in 1000 ms the coil will move 24". So that is 24/1000=.024" per ms. Now if you have a lag time of 200ms 200x.024=4.8", when you hear a signal, your coil will be 5" from it and still moving at 2' per second..
This has nothing to do with sound quality or volume, it has to do with timing.. Ever watch a tv when the audio is out of sync.. same thing.
Sure, give it a try, but look at the specs and find something with a lag that is under 50ms which would be 1.2 inches
Good luck

 

[tinsmith]

Many devices have a lag time of 200ms or more, this would be WAY WAY too much lag for someone playing a video game.. and certainly to much for a MD.
I am not good with math but figure 2 ft per second swing. So in 1000 ms the coil will move 24". So that is 24/1000=.024" per ms. Now if you have a lag time of 200ms 200x.024=4.8", when you hear a signal, your coil will be 5" from it and still moving at 2' per second..
This has nothing to do with sound quality or volume, it has to do with timing.. Ever watch a tv when the audio is out of sync.. same thing.
Sure, give it a try, but look at the specs and find something with a lag that is under 50ms which would be 1.2 inches
Good luck

Oops, just found this reply is bit late. Yeah that sounds right to me. I was seeing numbers like a couple(2) I guess, ms. I swing a 705 and it requires a slow swing speed so I figured it wouldn't be off enough to worry about. I think Harv has got himself a setup that's not the typical BT lag time because in PP mode youd see it and hes not having any probs. I haven't bought anything Yet and aftter thinking much about it, I don't know if I want another set of batteries to mess with. May try Rattlers because I love the one ear cup aspect. You get the quality sound but hear things comming up to you. Last fall I had a pit bull startle me pushing his wet muzzle right on my face. In the woods on knees digging and never knew he was there.
Tin

 

[007tallguy]

i've tried a couple of options for running wireless and nothing seemed to work properly for me.
first was a set of wireless headphones, but the little transmitter thingy (dongle?) would go into standby mode when i'd be digging a target and unless it had a good signal (such as music playing) it didn't want to come out of standby.
i could literally walk 10 feet or more before getting a strong enough signal to wake the thing up again.
next, i tried an fm transmitter thing tuned to the fm radio in my cell phone and same thing. once it went into standby, that pretty much ended it's effectiveness.
so, it's a wired connection to my earbuds and that's how it's going to be for me.