Tutorial  Updated

Internal modchip - SAMD21 (Trinket M0, Gemma M0, ItsyBitsy M0 Express) Guide, Files & Support

Notice: I am not receiving notifications for this thread. I didn`t realise people were still posting in it.

Please please accept my apologies if I haven`t replied to tags etc... I have no idea what is happening. I`m subscribed to this thread but I am not receiving notifications. Please inbox me if possible. Or tag me in another thread.

Its amazing that people are still checking all of this out. I thank you for all of the help and support I have received in this thread over this year.

Cheers. Matty.


A video showing a modchip in action. Thank you once again to @metaljay for providing this. This is what you can achieve by fitting a chip!



Section 1. Gather your software.

Get your chip software from THIS THREAD.
Follow the flashing instructions there...




Section 2. Removing USB port and unneeded LEDs. (Adafruit chips only)
  • Next, we need to remove the USB port from the modchip. I recommend a heatgun or a rework station. Heat up until the USB port just lifts off the modchip.
  • Do the same for the LED just to the right of the USB port.
See picture:
20181031_110415.jpg


You are now ready to fit your device. Proceed to Fitting section.





Section 3. Fitting modchip to your Switch.
New Universal Method. All SAMD-based internal chips. If your chip is not supported and you cannot work it out, PM me.

Trinket M0.
Solder as laid out in the following picture

trinketfinal.jpg

==================================================
Rebug SwitchME M0. Use Trinket files.
Solder as laid out in the following picture

rebugfinal.jpg

==================================================
RCMX86 - Internal modchip version.
Solder as laid out in the following picture

RCMX86-Internal-Final.jpg


==================================================
Gemma M0. Use Gemma files.
Solder as laid out in the following picture


gemma final.jpg

==================================================
ItsyBitsy M0 Express. Use ItsyBitsy files.
Solder as laid out in the following picture

itsybitsyfinal.jpg




==================================================
Feather M0 Express. Use Feather files.
Solder as laid out in the following picture

feather_final.jpg




BUILD YOUR OWN FROM A QFP ATSAMD21E18. Trinket equivalent pins.
Flash Trinket bootloader using OpenOCD via serial pins SWDIO / SWDCLK. Fit a reset switch somewhere... Or going to power / wake (aka method 2). If building for external use, it is good practice to fit a third capacitor between 3V & GND. This is deliberately vague and ambigious, as this needs research and you need to know what you are doing.

Link for setting the Pi up with OpenOCD: HERE
Raspberry Pi OpenOCD image in downloads section or HERE
SAMD pi connection.png



Alternative Solder Points

Credit to @consolex for original pic. I`ve added alternative points to solder to:
Alternatepoints.jpg


Credit to @pyorin for this much tidier version showing the same info as the above one!
Alternatepoints2.jpg

s-l1600.jpg

alternative3v.jpg




Replacement Parts List

Ok... So you have damaged your switch soldering your chip in. Not to worry.

First things first, DO NOT BRIDGE THE CONTACTS HOPING TO REVIVE YOUR SWITCH. With resistors, you may possibly get away with this, but with the capacitors listed below, if you jump these points, you will make a nice short-circuit to the PMIC and / or the M92T36, killing them instantly. Don`t do it.

OK... I`ll list these parts with METHOD 2 & 3 TRINKET PIN NUMBERS and the values of the components they solder to.

TRINKET 3V (POWER SUPPLY) - 2.2uF 0402 size MLCC capacitor. Voltage unimportant as long as it is over 6.3v
TRINKET PIN 2 (POWER ON RESET - goes to pin 5 on M92T36)- 4.7uF 0402 size MLCC capacitor. Voltage unimportant as long as it is over 6.3v
TRINKET PIN 0 (VOL+) - 150R (150 ohms) 0201 Thick Film resistor. 50mW
TRINKET RESET (SWITCH POWER BUTTON) - 150R (150 ohms) 0201 Thick Film resistor. 50mW


I recommend RS components.

FAQ

Q - How do I boot the switch into APX (RCM) mode?

A - You need to short out pin 10 on the right joycon rail to GND with a jig or modded joycon or paperclip (not recommended... Buy a jig you cheap-ass gyppo). Once shorted out, hold down vol+ and power. The switch screen should be off... Plug into your PC and it should recognise a APX device. Well done. You are in RCM.

Q - What glue should I use?
A - Only glue if necessary! Ideally if your soldering is of sufficient quality and your wire is thin enough, you don`t need glue. I use a bit because I am OCD. Anyway, use Epoxy. It`s what I use. Gives you some working time, is solid. Superglue makes a mess DO NOT USE SUPERGLUE. The only thing super about it is how it melts things. Epoxy won`t stick to the shield long-term, so bear that in mind. Pure Acetone will remove epoxy. Acetone tends to remove / melt anything to be warned. CHECK YOUR GLUE WON`T GO CONDUCTIVE OVER TIME - LOOKING AT YOU SCAMSUNG! The combination of heat cycles and absorbing of moisture can turn adhesive into a high-impedance connection!

Q - What size wire should I use?
A - I use AWG40 magnet wire or AWG30 Kynar. AWG40 goes onto components easier... And if you snap it, chances are the wire will snap and not the trace / component.
A2 - You can also use AWG30. I recommend Kynar wrapping wire but any will do. Looks nice, good resistance to elements, tidy. Nothing thicker than AWG30. You are just causing yourself more headaches. Trust me.

Q - Is AWG40 thick enough?
A - Yes. AWG40 is good for around 90mA.

Q - which methods do you recommend?
A - Connect all the straps...

Q - how do you recommend to set it up?
A - Fusee Suite. Search for Fusee Suite or go to link at top of this OP.

Q - My switch is flat and won't turn on.
A - Have you got the charger connected? Disconnect it or your switch won't boot! Boot to a payload (SX loader/Hekate), reconnect charger and leave on the payload menu and charge. Leave for 15 minutes and switch will start normally. It will continue charging one booted.

Disclaimer:
You have only yourself to blame. This voids warranty. This may or may not get you banned from online services. If it does, you got yourself banned. I`m not responsible if you kill your switch / your first-born with any of this in this post. I`m not infalliable. I`m partly senile. Do your own research. Kids, get bill payers permission before you attempt even using a screwdriver.
NUTSHELL: Don`t come having a go at me because you fooked your £300 console up. I`ll do my best to help you though if you do, Just don`t blame me.

Credits to Quantum-Cross, Atlas44, @Ninoh-FOX , @jcrorxp , @tecfreak, @mooglazer, @subcon959, @64Dp128k, @mikeleuskaldunak, @M-O-B, CTCaer, @evilsperm, @consolex and everyone else for valuable input.


IF YOU REQUIRE SUPPORT, IF YOUR CONSOLE ISN`T WORKING CORRECTLY... PLEASE POST A HIGH RESOLUTION PICTURE OF YOUR INSTALL. You might think it isn`t your soldering, but in all cases with the new methods, it is bad soldering. So, please post a picture.


A BRIEF WARNING - PLEASE READ
THIS MOD IS NOT FOR THE FEINT OF HEART. WE ARE SOLDERING TO TRACES AND COMPONENTS ON THE FRONT SIDE OF THE BOARD TO SAVE HAVING TO REMOVE THE BOARD AND SOLDER TO TESTPOINTS. IF YOU ARE STRUGGLING, OR THINK YOU ARE GOING TO STRUGGLE, PLEASE PLEASE SOLDER TO THE TEST POINTS NOTED IN THIS AND OTHER THREADS (YOU WILL NEED TO REMOVE THE MOTHERBOARD). DOUBLE - TRIPLE CHECK EVERYTHING. YOU HAVE BEEN WARNED!!!
Good soldering skills are needed!
A magnifying glass is needed!
Good soldering iron needed - ideally with a 0.3 conical tip. No more than 30w!
SECURE YOUR WIRES PRIOR TO SOLDERING. Stick them down with double-sided tape.
Only use glue if you need to and glue wires after soldering. Don`t glue the solder to the component!
Put the tiniest amount of glue on the PCB mask only. Never on components. Use a cocktail stick for more glue control!!!
Take a look at alternative solder points to get you out of the sh*t if you do rip something off the board
If you aren`t the best at soldering, then think very carefully about connecting to pin 6 capacitor (the one in these new methods). If you rip this pad, you WILL NEED TO REMOVE YOUR BOARD and run from a testpoint.
 

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mattytrog

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I see. I don’t use Auto RCM. I have a resistor (pins 1 and 10) on my right joy con.

That and the fact that my console is ALWAYS docked, tells me that i should be fine....

Right? Lol

I do hope so mate.

If its always on, I can`t see an issue.

Now, I`m not the best coder. But I`m learning. Not done any programming since moto 68000 days. Trying to cram as much into this ape-like brain I possess as I can.

Hardware butchering repair & communications is my area. But my logic dictates to me that you will be fine.

And even if the battery does get knackered beyond all hope, then whats the cost of a battery? Worth replacing.
 
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D

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I've having trouble getting the back on without pushing the button. I don't want to put it under the shield so I can flex the back to push it, but I can't get it deep enough in to not press the button when I don't want it.
Can someone show me where they put it?
 

mattytrog

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I've having trouble getting the back on without pushing the button. I don't want to put it under the shield so I can flex the back to push it, but I can't get it deep enough in to not press the button when I don't want it.
Can someone show me where they put it?

Pop the metal cover and nipple off the microswitch. Leaves a really low-profile piece of bi-metal (covered in yellow plastic). Then, you could drill a tiny reset hole? See my pic (the one with no name on it in installs)
 
D

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Decided to just cut out the metal slot. Now the cover fits, but I can push it inward to press the button.

Remember: cable management is for cowards.
 

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Canna

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Thank you @mattytrog

With all your support And work

Did not wish to butcher or touch the inside of my switch for warranty purposes

So i made the gemma dongle With these parts
From this Reseller In Uk

Gemma MO
https://shop.pimoroni.com/products/adafruit-gemma-m0-miniature-wearable-electronic-platform

Cell Battery Holder with switch
https://shop.pimoroni.com/products/lilypad-coin-cell-battery-holder-switched-20mm

Flashed the Gemma With your Gemma files
Caked the two together, solder just two cables from +/- on battery pcb to a connector into the gemma mo, and used a micro usb to usb c adapter/cable into the switch

Plug in.. Press switch power, Then hit the switch on the batterypcb
BOOM straight into Bootloader..


Lol i even used a tip of the pinky finger on a latex glove to put it into as a case temporarily :rofl:
 
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Pacote

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Will open my switch today to see if its really that hard to solder like I read some people saying (I did the wii mod a ton of times where you had to dremmel the IC and solder on the pins)

If its doable will probably do it. (was going to wait for some chainloader payload)
 

mattytrog

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Will open my switch today to see if its really that hard to solder like I read some people saying (I did the wii mod a ton of times where you had to dremmel the IC and solder on the pins)

If its doable will probably do it. (was going to wait for some chainloader payload)

If you can solder, it is easy. If you can't solder, it's hard.

Just be extra careful. Don't pull on any wires and secure everything like your mother in law secured to a train line...

That's what makes me laugh about this "tiny soldering guy".

Like he is the only person who can solder or do a bit of rework lol.

Unless that's the joke...

Practice makes perfect with soldering. It's never too late to learn! I've been doing it 30 years and I still haven't sussed it all out.
 

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If you can solder, it is easy. If you can't solder, it's hard.

Just be extra careful. Don't pull on any wires and secure everything like your mother in law secured to a train line...

That's what makes me laugh about this "tiny soldering guy".

Like he is the only person who can solder or do a bit of rework lol.

Unless that's the joke...

Practice makes perfect with soldering. It's never too late to learn! I've been doing it 30 years and I still haven't sussed it all out.

Im pretty sure tiny soldering guy became a meme at this point.

But yep, I use a simple magnifying glass for the small jobs, I just have to open the switch and see it for myself to be sure I can do it.

Even without the chip I will probably prep soldering the leads and fixing them with some glue.

I do a lot of soldering as a hobby mostly, but the last time I did something really small I think it was on the wii IC
 
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Pacote

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Quick question @mattytrog

I took a look and aside from the 3.3v connection on the capacitor, all the other are pretty easy (since test points)

But ffs, Im having a hard time soldering only on one of those capacitors

I tested and I know they arent supposed to be shorted. In trying I shorted them a few times (and fixed with some braid)

Is there any more isolated alternative point? Those are too damn close (my solder tip being just barely big enough not to fit between then doesnt help)


[EDITED]

Nevermind, just went back to the diagram and noted that are 2 resistors that and can solder right above the caps. That was an easy one :)
 
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efxonly123

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Quick question @mattytrog

I took a look and aside from the 3.3v connection on the capacitor, all the other are pretty easy (since test points)

But ffs, Im having a hard time soldering only on one of those capacitors

I tested and I know they arent supposed to be shorted. In trying I shorted them a few times (and fixed with some braid)

Is there any more isolated alternative point? Those are too damn close (my solder tip being just barely big enough not to fit between then doesnt help)


[EDITED]

Nevermind, just went back to the diagram and noted that are 2 resistors that and can solder right above the caps. That was an easy one :)

There's also another set of small resistors that you can solder to above the chip (if you follow the trace). Those are already bridged, so it was easier for me.
 
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64Dp128k

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Big update to OP.

For anyone who has done the older methods, dont panic!

Those methods are still valid.

I`m trying to help people who are having USB / dock problems. Hence the new methods and downloads. Plus it was getting a nightmare to look through.

:)
cheers mate, so do i need to change the point for 3v now? or can I use the old one? with new files.
 

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cheers mate, so do i need to change the point for 3v now? or can I use the old one? with new files.

If you want to use new files, change the power point.

If your switch is already back together, use legacy ones. If you have USB problems, then change to new one.

:)
 

Canna

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Agent Mattytrog

Your next mission whether you choose to accept it or not is

to get a external payload dongle like gemma or trinket to send payload through switch dock

This message will self destruct in 5 seconds :!:

Good luck Agent Mattytrog:gun:
 
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