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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BenLM

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@consolex 've seen your video on your FB but there's no other way to multi boot?? you have to plug it back in every time? I don't think I've seen that.

autoRCM is completely transparent.
Until you plug a USB charger in, that is. Then you need to press reset on trinket to send payload.

But dock works, reboot/shutdown/power off/ USB devices all work.

Ok so thank you no battery discharge problems as read everywhere?
 

mattytrog

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Method 3 can it damage the motherboard Nintendo SWITCH.
Because i have 30 switch sent to customers
Damage the motherboard? Where on earth have you heard that?

The answer is no.

I was referring to the gbatemp site post editor.

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

@consolex 've seen your video on your FB but there's no other way to multi boot?? you have to plug it back in every time? I don't think I've seen that.



Ok so thank you no battery discharge problems as read everywhere?

With method 1, there are no discharge problems. I don't know why anyone uses anything else to be honest. It is the easiest to do, saves fuses, no increased ban risk, all USB devices work.

Method 3 to me is antiquated. But I'll carry on supporting it.

Regarding the multipayload, if it is using my code, you just increase the payload by pressing reset on the trinket and reboot. It is then locked until you press reset again.
 
Last edited by mattytrog,

consolex

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Damage the motherboard? Where on earth have you heard that?

The answer is no.

I was referring to the gbatemp site post editor.

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



With method 1, there are no discharge problems. I don't know why anyone uses anything else to be honest. It is the easiest to do, saves fuses, no increased ban risk, all USB devices work.

Method 3 to me is antiquated. But I'll carry on supporting it.
Good for motherboard ^^
Methode 2 pin "Rst" needs more disassembly :/
I think it's better that the Trinket is on standby
 

mattytrog

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Good for motherboard ^^
Methode 2 pin "Rst" needs more disassembly :/
I think it's better that the Trinket is on standby
But why? Any time in storage and the switch battery will be flat. And I don't mean just flat according to the switch, I mean FLAT. Ie near enough 0v. That's explosion territory is you try and charge too fast.
 

consolex

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@consolex 've seen your video on your FB but there's no other way to multi boot?? you have to plug it back in every time? I don't think I've seen that.



Ok so thank you no battery discharge problems as read everywhere?
I do not like too much the method multipayloadv1.3 because you have to add a button to change the payload
 

consolex

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But why? Any time in storage and the switch battery will be flat. And I don't mean just flat according to the switch, I mean FLAT. Ie near enough 0v. That's explosion territory is you try and charge too fast.
Yes for battery lithium

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

Try the other one then. ShaXlauncher. On my GitHub.
Compatible with SXOS ?
 

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I'm glad the most reliable and feature-rich method also happens to be the easiest for installation.

@mattytrog does the cap you have to solder to for 3v get turned off at some point in the boot cycle? I was curious how the device "knew" when to shut off, as it seems like the device stays on while navigating the Hekate menu, but as soon as Horizon or a Linux payload are launched, it eventually turns off completely. It's just impressive how perfect these devices work in this configuration.
 

mattytrog

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I'm glad the most reliable and feature-rich method also happens to be the easiest for installation.

@mattytrog does the cap you have to solder to for 3v get turned off at some point in the boot cycle? I was curious how the device "knew" when to shut off, as it seems like the device stays on while navigating the Hekate menu, but as soon as Horizon or a Linux payload are launched, it eventually turns off completely. It's just impressive how perfect these devices work in this configuration.

1) The trinket sleeps once sent the payload. IE disconnects from the switch USB internally. This is how we can flash the trinket when Horizon is loaded and why you see the "cannot charge" notification - because the trinket takes over and the switch cannot read anyfurther PID/VID while trinket is in TRINKETBOOT.
2) During a full reboot, the 3v3 line gets momentarily powered off. This makes the trinket look for RCM again.
3) The rest is controlled by Horizon. Including the "mini-boot" during power-off.

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

Yes I want :)
where ?
Je vous ai envoyé un message en français car cela pourrait vous aider. Mon français n'est plus aussi bon qu'auparavant!

Translated: Sent you a private message is French.
 

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Je vous ai envoyé un message en français car cela pourrait vous aider. Mon français n'est plus aussi bon qu'auparavant!

Translated: Sent you a private message is French.

ROOOO si j'avais su que vous parliez français !!!! En tous cas je vais faire la méthode 1 et je vous remercie énormément pour votre implication, votre aide et votre patience !!!!! C'est grâce a vous que tout ça est intéressante!!

ROOOO if I knew you spoke French!!!!! In any case I will do method 1 and I thank you very much for your involvement, your help and your patience!!!!!! It is thanks to you that all this is interesting!
 

mattytrog

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ROOOO si j'avais su que vous parliez français !!!! En tous cas je vais faire la méthode 1 et je vous remercie énormément pour votre implication, votre aide et votre patience !!!!! C'est grâce a vous que tout ça est intéressante!!

ROOOO if I knew you spoke French!!!!! In any case I will do method 1 and I thank you very much for your involvement, your help and your patience!!!!!! It is thanks to you that all this is interesting!

Aucun problème. Mais si vous voulez parler français, nous devons le garder en message privé. Les gens qui ne peuvent pas le parler se fâchent!
Translated: We need to do this in private message as it isn`t fair to all tempers.

French, German, bit of Spanish. Thats my lot.
 

mattytrog

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On my Git, I have updated the ShaxLauncher with some extra code switches (not physical ones! Don`t worry).

Have a look at it on my git, try it (build it manually in Ardudildo so you can set the code switches as you like). There is an SD card image on there too which should be up-to-date (ish)

https://github.com/mattytrog/SAMD-ShaXLauncher

I`m doing this for a reason. It is a test-bed for anther multi-payload idea. I`m working on.

Why, you may ask. Hekate / SX launches other payloads... This is done from boot-time. It is like having 8 different trinkets fitted inside your switch.

Pointless? Too fookin right. But ADHD wouldn`t let me leave it alone...

@M-O-B try sticking this in your IDE and give it a whirl. Read the readme on Git to see what the code switches do.
 
Last edited by mattytrog,

beesho85

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Hi guys,
I tried to prepare trinket m0 for installation. However, i ended up with the picture attached while trying to solder the data pins, do you think i still can fix it or is it broken?
 

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