WTD: DB9 to 3.5mm Serial Cable

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Forums › Offers and Wanted › WTD: DB9 to 3.5mm Serial Cable

Lias

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#295159 9-Mar-2022 15:06

Anyone have one of these floating around they don't need, or know where I can get one in NZ at a reasonable price?

$5 shipped on AliExpress (6 weeks eta)

$23 shipped on Amazon (3 weeks eta)

or $105 + shipping at PB Tech, which quite frankly is taking the piss.

I thought I had one in my many boxes of "rainy day" cables and parts but it turned out to be a 2.5mm not a 3.5mm.

I'm trying to avoid having to get out my soldering iron lol.

I'm a geek, a gamer, a dad and an IT Professional. I have a full rack home lab, size 15 feet, an epic beard and Asperger's. I'm a bit of a Cypherpunk, who believes information wants to be free and the Net interprets censorship as damage and routes around it.

pih

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#2883841 9-Mar-2022 15:56

I'll wire one up for $85+shipping ;)

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richms

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#2883852 9-Mar-2022 16:37

There is no standard wiring for these, so the chances of buying a random one and have it work is pretty remote. Premade ones without pinouts are about as usefull as all the HDMI to component cables that are on aliexpress and will work with nothing other than the projector they were made to go with.

Richard rich.ms

nitro

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#2883862 9-Mar-2022 17:08

richms:

There is no standard wiring for these, so the chances of buying a random one and have it work is pretty remote. Premade ones without pinouts are about as usefull as all the HDMI to component cables that are on aliexpress and will work with nothing other than the projector they were made to go with.

this. pinouts vary. from the ones you linked, the pbtech one has a 4-pin (trrs?) plug while the other two have only 3.

not too difficult to wire one up according to what you need with a few bits from the likes of jaycar.

richms

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#2883865 9-Mar-2022 17:26

Some also have electronics in the shell.

There are screw terminal TRS and TRRS type plugs in both sizes if you are confident that the cable is a straight thru one so you can avoid soldering. I may have some of them lying around from when I was using the composite out of a pi and didnt have the right RCA cables.

Richard rich.ms

MadEngineer

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#2883994 9-Mar-2022 20:04

Can we ask the purpose?

You're not on Atlantis anymore, Duncan Idaho.

Lias

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#2884151 10-Mar-2022 10:03

All the ones I've found for sale seem to use DB9 Pin 5 for GND and PIN 2/3 for TX/RX which is what I need. Looks like if I want something at a reasonable cost thou I'm going to have to make it myself.. Doable, I'm just being lazy lol.

Purpose is a console cable for a Microsoft StorSimple

MadEngineer

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#2884588 10-Mar-2022 22:24

Grab something like this 9pin Solderless Connectors DB9 RS232 Serial to Terminal Female Male Adapter Connector Breakout Board Black+Green|Connectors| - AliExpress

International deliveries seem to be really quick lately. YMMV

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MattR

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#2885023 11-Mar-2022 14:22

I wired one up last weekend with a spare headphone cable and a DB-9 plug from Jaycar, and then used a 3.5 to 2.5mm adapter so I could get into my UPS.

Just get out your iron :)