Thanks for the review Dave! I find it easier to unlock the ball joint with the thumb screw while positioning. Then lock it up when it's where you want.

Eeprobe looks nice, with that crackle finish making it look straight out of the 1950's electronics catalog.

When you open a virtual COM giving access to a bluetooth device, the baudrate in the terminal emulator does not matter. I think Intertooth wasn't responding to the commands because it requires a different end-of-line marker. Try changing the setting in Termite to CR+LF. The switch did not respond because it probably works on a different baudrate, which you need to change by issuing a command for the Intertooth device.

Regarding the bluetooth serial interface... A lot of current enterprise IT equipment use rs232 for initial setup and offline configuration, and for what ever reason, there is a LOT of different connectors that have been used for basic 3 wire rs232 and that is the case here. It is NOT an ethernet port on those switches, but commonly a RJ45 where just 3 pins are used for serial communication, so it has nothing to do with ethernet. Here is a quick list of the connectors i have come across for serial communication on enterprise gear: Micro jack Mini jack RJ11 RJ45 RJ50 DB9 Mini DB9 Mini USB On network switches, Cisco's RJ45 pin layout is very common, but other equipment like UPS, PDU, SAN, ATS, Env Monitoring etc, it is the wild west, and you commonly find multiple pinouts for the same connector. One exception that is getting more common, is some equipment has a USB port (typically Micro USB) which connects to a internal rs232 transceiver, and thus the switch (or what ever) will pop up on you computer as a serial modem. But that is the exception, not the rule :D

On the probe holder, that knob on the other end should loosen the pivot ball.. and then you tighten back again.

Quality is the Q Factor of the filter Dave

I would love to see a @DankPods review on those 😁

I was hoping they weren't going to fall off once Dave started moving around. Hang on Ploopy, Ploopy hang on.

A touch of silicone grease in the moving joints might help with the headphone creak. I've had to do that on old Sony headphones.

That headphones toolbox works similar to Equalizer APO (which I use, so I noticed that).

Judging by the frequency response, these ploopy headphones measure with better bass response, and more faithful less fatiguing well extended treble than the Samsons

That probe holder looks like a proper piece of kit. The Americans do that sort of thing very well.

I have that same knife. I like it a lot, especially the leather sheath with the weave pattern on the side.. It did end up rusting a bit, so I covered it with mustard and then held it over the flame over my stove to burn a charcoal coating all over it. The mustard makes it sort of flash rust with color patterns. After burning it, it shouldn't have any rust issues anymore. I didn't get it very hot, so it shouldn't effect hardness. After doing that, it's now one of my favorite knives because it's so maintenance free and I can beat on it and use it how I want. It's a good one.

I would try a different terminal program; something simple like Putty. The terminal program you are using is making you enter a string of text and then hit enter and the characters don't get sent until you hit enter. I would try a terminal program that sends characters as you type them, which Putty will do.

Ploopy, not too spoopy! Looks like a nice design, though I'm not really a fan of symmetrical phones, and the jacks pointing forward rather than downward mean that the cable will always be bent and stressed at the plug, unless angular plugs are used. If you don't like purple, you could always send it down to some girl in Poland-not-Portland :) Interesting probe stand - and a well made one too! All metal just like I like them, none of that icky plasticky rubbish. 19:37 ghost spotted - call the Ghostbusters! That Cisco / Linksys switch may be manageable through serial only, but it'd be a nice repair or teardown project. I'd love to see you troubleshoot it.

3:17 - I am fan of a purple, since they fullfill it's 'purple'-ose! 😆

The probe is a great, BUT, it needs to have a soft part at the screw end (if you love your probes!)!

I don't really see open or closed back cans as a preference personally, each have their distinct place and necessity. Open back are the best for low fatigue listening and enjoying. Closed back are the best for recording, isolation, and for controlling bleed-out.

Hey Dave, you should see if that goofy Aussie from the KZfaq channel Dankpods would be interested in testing these headphones out. He’s got quite a large series of reference over the ear monitors and one of those freaky ears on a stand for actual acoustic testing of headphones. That would be a super cool collab!

Switches and routers don't have ports which double-up as Ethernet and serial. The console port is a dedicated port which happens to use an 8P8C connector on many models. The 8P8C is smaller than a regular serial port, but more importantly I'm sure it's cheaper. Design for manufacturability and all that.

It would be good to test with music. The response has a few dips and peaks, I wonder what they actually sound like. You could ask the builder of these to send a set to DankPods and see what he thinks.

That probe holder might work well with my Aussie meter (121GW) and a set of armor-piercing probes I got from an old Beckman.

Plastic headphones always break, but at least it is possible to print a new.

What I saw of the manual for that Bluetooth serial device you would type a command followed by ? to get the help information for the command.

I'm surprised the DAC/amp unit isn't fully differential, would have significantly reduced complexity in not needing a negative rail.

lmao Dave's motions wood grain hehe 12:50 in my experience it's not easy... I had to buy random headphones... I unfortunately got used to v-profile type (Sony MDR-7506)... but yeah trying to program my own profiles sucked, I was never happy with the result. It's like trying to come up with my own equalizer settings for music. I found a headphone I liked while in an Apple store a long time ago... it's too bad I didn't remember the name (not made by Apple)

dave reaction to wood grain was best part :)

Couldn't you have attached the intertooth to a serial port on a computer instead? (Possibly with a null modem) Also there is no such thing as a network port that doubles as a serial port, it just uses the same type of connector.

I use closed back headphones, because there's a lot of ambient noise to block out.

And still audio needs to be mixed for a tinny 3watt bleutooth speakers or transistor radio of olden days.

You could do some really cool things with your headphones. If you're a researcher you could simulate different types of hearing loss. You could go to an audiologist and have a hearing test done then take your response curve and invert it to provide a truly flat response.

The probe holder's semi slippery feet is probably a real feature and not a bug. You don't want the probe holder to hold the DUT in place. You want the probe and holder to yield and follow the DUT.

To bad the new Raspberry Pi 5 got rid of the 3.5 mm headphone jack. Those are definitely headphones made for radio😢😅

It is not Ethernet. It is just serial over RJ45. The most common pinout is a Cisco standard, now used by most of the network equipment. (Very rarely it is a different pinout). If you work with switches, routers, every day, then it makes absolute sense to use this thing. Less cables, universal, etc. I would be a bit worried about plain text (no encryption) possibly, but for most stuff it is short range, and in well walled building / room, so maybe it is ok. I only connect over serial to network equipment, about 2 times a year, so of not big use to me, but nice kit. You almost never use these serial connections for monitoring, rather for one time setup, to do some initial setup, or emergency access. Then do everything else using network connection (SSH or web interface). In bigger installations people would even have something called serial server, which is a separate box with like 16 or 30 serial ports, and connect permanently serial devices to it, and use that to log in remotely to devices in emergency or major reworks of the config (where the network itself can stop working). The USB part is weird tho. It should have been USB type A connector I think instead. The speed you have seen in the terminal window is for the bluetooth connection from your computer to this device. 56k there. That is just from your terminal to the device. The device to the switch, that is configured separately using the $$$$$ as you said. Most switches itself use 9600 bps by default (especially Cisco switches), so you also have that setup correctly. It is super slow and annoying to work at this speeds, but it is just a standard decided decades ago by Cisco, and is pretty stable. I think you terminal program is just meh, and is not working well. I see they use some ANSI escape characters that your program does not support. Try with putty on Windows, or with minicom on Linux,.

Have a similar Bluetooth Serial wireless adaptor. Lets you program all kinds of equipment without the wires. Also works on Android Tablets/Phones. Used to work with Ipad/Phone but at some point Apple Yanked the Bluetooth HAL profiles.

Thanks Ian.

The Intertooth thing seems kinda pricy: 249CHF before tax and shipping . 272US $

them headphones... princess dave from spaceballs...

So pleased you used Samson SR850s. I came across them from some KZfaq video about a year or so ago and they are fabulous. And stupid cheap. You can't go wrong. I previously used to swear by Grado SRs for years but these Samsons have become my go-tos, not just because they sound fantastic but because they're comfortable for hours of use. I can't recommend them enough,

intertooth looks interesting but is it secure? I don't expect you'd want to leave a wireless connection open to your device's COM ports for any length of time.

You can't evaluate headphones until you listen to them with a high end recording of the fifth movement of Mahler's 7th.

Dave could you not use a PC with a serial port to verify the console port on the switch first?

Hi. Ever seen those 70s style encapsulated LDR's ( light dependent resistors) anywhere these days? Want to do a retro project and need one of those exact blue ones with "Holland" in yellow printed on the side.

Damn, I sent it to Austria! : O !

Whoa! Awesome to see you take a look (and listen) at the Ploopy Headphones! As a sworn open-source madman - I am very excited about what the Ploopy guys are doing - they also have made a lot of trackballs, even keyboards and mice - all open-source! And the headphones are their latest venture! PS: wearing my pair of Ploopy's as I write this.

Haha, without image this probe holder section sounds like commentary track for porno movie xD

the more weight, the more betterer 🙂

Does it come with gold plated oxygen free litz wire copper cords to suit the audiophiles 🙂?

I have a narrow head. I don't think those headphones would work for me.

Warning! Warning! Will Robinson... The new Raspberry Pi 5 is out. 🥳 More fun stuff. 😎

I must be wearing some pretty shit headphones because I listened to that MC Frontcrack song and couldn't hear any bass at all. Also tried other things like "Woofer cooker" and "Extreme bass test" and couldn't hear anything below about 50 Hz. Even turned up all the way it sounded like somebody a couple houses over playing loud music indoors.

Can I ask about motor 60, 2800watt ,and motor controller Fardriver ND 84530@ 84v-100.8 . I burned out my motor windings. I turned the controller down to 150 phase amps ,and it still got burned . Does the controller and motor have to be the same voltage , or I was told it could work the lower voltage motor?

LOB!

Why do you need headphones when you can just strap giant speakers to your head?

I think the pcbite made most of those probe holders kind of irrelevant.

should have sent this to dankpods

22:30 Can someone ELI5 why I might choose a pic over an stm or nxp? Is it a certain generation of EEs that “grew up with them” or some feature I’m overlooking?

Australia not Austria 😂🤣😂

#dave #eevblog hi dave apparently there is error going on accessing the forums "DATABASE ERROR . Please try again. If you come back to this error screen, report the error to an administrator." I cannot login there so this message is here now

Ask your mate Dank for his freaky ears-on-a-stand

Ploopy guys. Go see a medical practitioners about that. :-)

hi

try it with putty

Another video that isn't marked as Paid Promotion.

hahaha.

Hi boss,,,nice video! ;)) you aussie? the waveform on digital scopes looks fake use analog scopes,,,

Bad stuff awayting you 👍

i have no idea why ploopy continues with such a flawed headphone design. it would be much easier and much better to use off the shelf drivers rather than the abomination that they're currently using.

The Intertooth web site appears to be down. 😢… nope it’s back! CHF 249 (~250 USD) is a bit steep for this product. I don’t see how the BOM could even hit $50. What am I missing, aside from a huge profit margin?