Tutorial  Updated

ANOTHER Magnetic Reed Switch RCM Installation

[TUTORIAL] [MOD] RCM mode with just a magnet (maghax). No visible changes to the Switch or Joycon!!! v1.7 2018-06-28

Please post any improvements or clarifications you'd like to see. If this passes muster, Mods can move it to the tutorials forum if appropriate.
v1.0
- beta tutorial
v1.1
- added some more text, and links to joycon teardowns
v1.2
- added reed dimensions
- added info about side affects and charging (there are no side effects)
v1.3
- added details on magnets
v1.4
- added more purchase options for magnetic reed switch
v1.5
- added link to https://gbatemp.net/threads/f-g-joycon-mod-magnethax-switch-edition.502459/ for credit to an older magnetic switch thread and instructions
v1.6
- added advise to disconnect battery before starting soldering.
v1.7
- added a user experience link at the bottom describing some more details.
-----------------------------------
This should be a pretty solid method for installing a MAGNETIC REED RELAY into your Right Joycon. the purpose is to have a cosmetically PERFECT Switch, with the ability to launch RCM with almost no effort. You just need to have a strong magnet to hold near the bottom right corner of the right joycon while you press power and volume + when booting. There are no known side affects of this method. i.e. you can still charge, use the joycon or switch normally. It's essentially stock when there is no magnet nearby and should last forever with no risk (after installation). I'd not send it in for warranty repair with the reed switch installed though :). This is a MUCH better option than a jig if you don't mind some soldering

The tutorial requires MODEST disassembly and soldering skill.

I'm not saying my approach and tutorial is any better than what other's have done (and posted). They certainly deserve credit. However, this is what I did and I think it's the best approach. I had previously posted a PSA about "why jigs are a bad idea" as I don't agree with them generally. So here is an explanation (for the reasonably skilled solderer) to do a magnetic reed switch the way I did it.

Note that much of the tutorial text is IN the spoilers with the pictures. Don't miss it. It is always at the top above the picture. I elected to keep this pretty visual rather than text, but happy to add more if people want more detail.

It is advisable to disconnect the joycon battery before starting to solder. I didn't disconnect the battery when I did the mod. So there isn't a picture of it.

IMG_20180521_200510 tool list.jpg
I didn't include info on how to open the case beyond showing the triwing screwdriver. There are better tutorials on opening the joycon VIDEO and TEXT
The reed switch can be bought from digikey for about $0.50 each. Shipping via USPS first class mail runs about $3 for under 8oz. The reed switch is 1.8mm by 10mm (body of the switch). HERE is an option from Amazon that is bigger (2mm x 14mm)

reeds only image.jpg
Note, I used 6cm wires. I wish I had cut them to about 3cm. You will see later they were a little too long. Also, I didn't take a picture of it, but I generally use the soldering iron to melt off 1mm of the wire end for soldering. I don't usually use wire strippers on Kynar insulated solid 30AWG wire. Note this is also called "wire wrap wire" in many circles.

IMG_20180521_201804 6cm wires.jpg
This is one of the main items different from what most people have done. This approach takes less space and allows the wires to exit the reed switch from the same side toward the connector. BE CAREFUL!!! It's VERY easy to break the glass on the reed switch when bending the leads. I broke two, though they were not ruined, I didn't want them chipped. Use some tweezers or needle nose pliers to bend it about 1mm beyond the end of the glass.

IMG_20180521_202311 bend.jpg
IMG_20180521_202524 solder.jpg
The goal here is to use enough heat shrink to cover the exposed leads and solder, but little enough that it doesn't interfere with placement. I went about 1/8" beyond the electrical connections on each end of the device.

IMG_20180521_202608_resize.jpg
Sorry I didn't get a better picture here!! It will give you the idea however.

IMG_20180521_203056 shrinkage.jpg
Be careful with the foam. It actually serves a purpose protecting the other side of the flex cable from abrasion against the soldered pins.

IMG_20180521_201134 remove foam.jpg
Here are pins 1 and 10 that you want to solder to. Be VERY careful. This is a tight soldering job and you don't want to mess up. You can still back out at this point if you aren't comfortable.

IMG_20180521_201220 solder points.jpg
IMG_20180521_203056 soldered.jpg
I think this is the best place to put it. The Joycon is pretty tight once assembled but there is ample room above the PCB and wire routing location where I have stuck it here.

IMG_20180521_203156 reed installed 1.jpg
IMG_20180521_203234 replace foam.jpg
If it isn't obvious, the way you know you did it right are with the below two tests, with and without magnet, and what you should see on the screen. Speaking of Magnets: I'd consider using a 1/4" or larger rare earth or "neodymium magnet" They come in different grades N35 N42 N50 etc. The higher the number the stronger. Any of them should work. The dark brown or black "ceramic" magnets work but they are not as strong so you might consider a larger size (maybe 1/2"??). Ebay has tons of them, Harbor Freight has rare earth magnets and magnetic grabber tools. Buymagnets.com is also an option but shipping might kill it.
IMG_20180521_203724_resize no magent.jpg
IMG_20180521_203750_resize with magnet.jpg

Here is a nice discussion of specific wire lengths and soldering technique as well as a way to use the kickstand to store the magnet [Post 84]
 

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Last edited by gallymimu,

Kubas_inko

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Sorry Kubas, I thought you were the one having problems. Still shouldn't use pin 9 as it's not really connected to ground, it just has a logic zero that might change in certain conditions. I've only seen people have problems with pin 9 and not with 1 for instance.
I have seen people having problems with all pins.
I am happy with that (pin 9 and 10), as long as it works (and it works from the start for me).
 
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Clydefrosch

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It's not like 9+10 breaks the joycon, it just the system doesn't really notice it being connected. It's still getting charged and working perfectly (through bluetooth connection).

9+10 not always being ground is also only true if you don't use a joycon. if using a joycon, the grounding definitely happens (on the joycons side). if you do it with, say a screwdriver, it could potentially short something in rare circumstances (though some argued that state where 9 carries a tiny current actually can't happen during startup so it wouldn't matter anyways).

at least that's what i read about that so far.

as for the mod, how big a magnet does it take for the reed switch to close?
and is there anything special about that wire you're using?
 
Last edited by Clydefrosch,

gallymimu

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It's not like 9+10 breaks the joycon, it just the system doesn't really notice it being connected. It's still getting charged and working perfectly (through bluetooth connection).

9+10 not always being ground is also only true if you don't use a joycon. if using a joycon, the grounding definitely happens (on the joycons side). if you do it with, say a screwdriver, it could potentially short something in rare circumstances (though some argued that state where 9 carries a tiny current actually can't happen during startup so it wouldn't matter anyways).

at least that's what i read about that so far.

as for the mod, how big a magnet does it take for the reed switch to close?
and is there anything special about that wire you're using?

It's 30AWG solid kynar wire. It's not "special" other than it's small and flexible and has very small diameter insulation making it very good (flexible and small) for mods like this.

As for magnet size. I haven't tried too many yet. A business card sticker magnet for the fridge isn't enough. Almost any size neodymium over 1/4" should be strong enough. Pretty much any of these should work, but it's probably cheaper to buy them on ebay.
 
Last edited by gallymimu,

einfachGaer

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3rd page in the original reed switch thread there is one user who did this as well.
gbatemp.net/threads/f-g-joycon-mod-magnethax-switch-edition.502459/page-3
 

isoboy

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This is an absolute 100% flawless thread with all the info you need in detail with much better solder points. It wouldn't hurt with a direct link to a magnet on ebay but maybe that's a bad idea since those listings keep refreshing. I'm on 4.1.0 and 3.0.0 and I don't know yet if I ever need to do this but it seems more and more likely for me to update my main switch because of all the weird shit people are experiencing with their batteries and error screens. Plus I just want to play the Rabbids DKC DLC. I bet if I update, atmosphere will be released the day after but I'm still thinking of updating to keep it online. I did order my reed switches a few weeks ago because I was always going to do this mod if I had to mess with the pins. I could've followed the other dude's thread but I like this more. Better pictures with all the details you want. It's like the OP was tired of waiting for a thread like this :) I LIKE. THUMBS UP.
 
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gallymimu

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This is an absolute 100% flawless thread with all the info you need in detail with much better solder points. It wouldn't hurt with a direct link to a magnet on ebay but maybe that's a bad idea since those listings keep refreshing. I'm on 4.1.0 and 3.0.0 and I don't know yet if I ever need to do this but it seems more and more likely for me to update my main switch because of all the weird shit people are experiencing with their batteries and error screens. Plus I just want to play the Rabbids DKC DLC. I bet if I update, atmosphere will be released the day after but I'm still thinking of updating to keep it online. I did order my reed switches a few weeks ago because I was always going to do this mod if I had to mess with the pins. I could've followed the other dude's thread but I like this more. Better pictures with all the details you want. It's like the OP was tired of waiting for a thread like this :) I LIKE. THUMBS UP.

Thanks for the kind words dude!

I did actually provide some magnet info and links. Are you suggesting pointing to a specific one? I also was worried about an ebay link since they aren't likely to last.

--------------------- MERGED ---------------------------

Do somebody have a link to buy right reed on amazon ?

I offered a link to digikey which will likely be cheaper. However, if you are looking at some on Amazon and having trouble deciding post there here and I'll try to help you pick (if they are appropriate).
--edit--
Amazon Option
 
Last edited by gallymimu,
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im having trouble finding 30 AWG wire i only see 22 AWG in my region.
Whats the difference? can this be used? i cant find any kynar either?

Thanks
 

SodaSoba

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im having trouble finding 30 AWG wire i only see 22 AWG in my region.
Whats the difference? can this be used? i cant find any kynar either?

Thanks

22 would be thinner wire.
Check Amazon loads on there.
Also try magnet wire usually it's ideal for this type of job.
 

BigPanda

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Using magnetic reed is my current plan for my joy-con. However, I was wondering if the rumble is strong enough to create a contact without a magnet.
 
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gallymimu

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im having trouble finding 30 AWG wire i only see 22 AWG in my region.
Whats the difference? can this be used? i cant find any kynar either?

Thanks
https://uk.rs-online.com/web/c/?sra=oss&r=t&searchTerm=kynar

--------------------- MERGED ---------------------------

Please change the me to magnet hax V2 switch edition

the "me"? Sorry I don't follow.

--------------------- MERGED ---------------------------

22 would be thinner wire.
Check Amazon loads on there.
Also try magnet wire usually it's ideal for this type of job.
No, 22AWG is MUCH thicker. It would be difficult to work with and hard to solder to the solder points.

magnet wire can work, but it can be difficult to remove the varnish at the soldered ends.
 

MrWhosHacking

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Happens only to someone thought :/

I bent mine pin9+10pin to a point it touch pin9 to pin10 in joy con. I have no problems with it or have any trouble charging or system not recognizing it and it does works on pc as well no issues

Now I might cause I bending them or instead of using wiring pins now that’s the case I can be wrong but if mine pins 9 and 10 bent work so should the wires cause I have a tiny switch on my other joy con pin9 and 10 so no pins are bent with wires and a tiny micro switch on and off and that’s works if could be you did add flux or your soldering wasn’t great
 
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gallymimu

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I bent mine pin9+10pin to a point it touch pin9 to pin10 in joy con. I have no problems with it or have any trouble charging or system not recognizing it and it does works on pc as well no issues

Now I might cause I bending them or instead of using wiring pins now that’s the case I can be wrong but if mine pins 9 and 10 bent work so should the wires cause I have a tiny switch on my other joy con pin9 and 10 so no pins are bent with wires and a tiny micro switch on and off and that’s works if could be you did add flux or your soldering wasn’t great

Thanks for the comment, but I find your english REALLY hard to understand. It sounds like you said: "using pin 10 and 9 work fine for me"

I'm not disputing that it works, I am saying that you shouldn't use pin 9, because, pin 1 is better, because it's an actual ground.
 
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