Tutorial  Updated

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

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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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  • Trinket equivalent.png
    Trinket equivalent.png
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Last edited by mattytrog,

mattytrog

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@popy

Hang on a minute... I missed that bit. Disable autoRCM. With autoRCM enabled, you haven`t tested anything :(
 

mattytrog

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nice job off you :yay3ds::yay3ds:

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




yes I mean the + button don't work any more
Yes. You have cooked / fucked the current limiting resistor. 150R 0201 size. 50mW

You can link it. Quite safe.
 

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Possibly. Nothing damaging...

Tell you what. I`ll cook up some new UF2s without the strap code. The other bugfixes are still there. Check later on. Some links will be up.

Told you it wasn`t SWITCHBOOT. Trust me. I`m a twat.

Thats a job to do then for next 0.9.5 release... Blag the BQ24193 code.

Thanks a lot for your efforts.
I have should trust you that not SWITCHBOOT was the fault.
I am here to test, if you need someone.

Just two little questions:

Do you leave autoRCM on -> to prevent fuses a little bit more? :rofl2:
Should i'll try it without autoRCM?
 

mattytrog

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I solder it like the schematic you post I solder every day its my job I repair Mac lol

Me too. They are really weak. Any hotter than 300 degrees tends to fuck them

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

Thanks a lot for your efforts.
I have should trust you that not SWITCHBOOT was the fault.
I am here to test, if you need someone.

Just two little questions:

Do you leave autoRCM on -> to prevent fuses a little bit more? :rofl2:
Should i'll try it without autoRCM?
Yes. You need to. I missed that bit. I didn`t know autoRCM was still enabled. Not an accurate test :(

Can you test again please my friend?
 

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Me too. They are really weak. Any hotter than 300 degrees tends to fuck them

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


Yes. You need to. I missed that bit. I didn`t know autoRCM was still enabled. Not an accurate test :(

Can you test again please my friend?

Yes that correct I test and auto rcm don't work was still enabled .

for resistor I go replace check it thank bro for your help
 
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popy

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Me too. They are really weak. Any hotter than 300 degrees tends to fuck them

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


Yes. You need to. I missed that bit. I didn`t know autoRCM was still enabled. Not an accurate test :(

Can you test again please my friend?

Done the same tests without autoRCM (checked with briccmii).
All tests have the same GOOD results.
Also fuse count is 6 as before :D

I am activating autoRCM now, just to be 999999% safe :lol:
 

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Done the same tests without autoRCM (checked with briccmii).
All tests have the same GOOD results.
Also fuse count is 6 as before :D

I am activating autoRCM now, just to be 999999% safe :lol:
Fantastic...
Seems a strange one though.
 
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Very welcome :)

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

@popy

Just to rule out a glitch, can you try 0.9.4 for me one more time? both file without autoRCM? See if it takes you back to the menu now? Just a hunch.
 
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Very welcome :)

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

@popy

Just to rule out a glitch, can you try 0.9.4 for me one more time? both file without autoRCM? See if it takes you back to the menu now? Just a hunch.
Can test it tomorrow, have to sleep a bit [emoji12]

Just an idea: when the usb input is pulled in 0.9.4 the chip is reseted (seen in horizon the joycon and volume icon).

Wouldn't it be better to just push the payloas again without reset?

This has the benefit that the menu wouldnt trigger and also horizon would be a quite when usb is connected.

Just an idea...

pOpY

Gesendet von meinem ONEPLUS A6013 mit Tapatalk
 

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Can test it tomorrow, have to sleep a bit [emoji12]

Just an idea: when the usb input is pulled in 0.9.4 the chip is reseted (seen in horizon the joycon and volume icon).

Wouldn't it be better to just push the payloas again without reset?

This has the benefit that the menu wouldnt trigger and also horizon would be a quite when usb is connected.

Just an idea...

pOpY

Gesendet von meinem ONEPLUS A6013 mit Tapatalk
Yep. Can do. Next release?
 
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Yep. Can do. Next release?
Would be nice, in the meantime i am happy with 0.9.3.
I can live without the new usb disconnect trigger.
Just mention me and i am here to test the new release [emoji4]

Please set an note in the OP regarding this behavior, so any other will be warned.
Or should 0.9. 4 be pulled offline?

Gesendet von meinem ONEPLUS A6013 mit Tapatalk
 

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Would be nice, in the meantime i am happy with 0.9.3.
I can live without the new usb disconnect trigger.
Just mention me and i am here to test the new release [emoji4]

Please set an note in the OP regarding this behavior, so any other will be warned.
Or should 0.9. 4 be pulled offline?

Gesendet von meinem ONEPLUS A6013 mit Tapatalk

Any more people have issues and I`ll pull it. Might still be a quirk with a fuse or something with yours yet. Like I say, it works perfectly here. Nobody put anything on Git either.

So... Lets wait and see ;)

Thank-you for the offer of testing
 

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I may be the latest victim of a crappy solder job...

Anyways I was soldering the trinket in, and after checking everything, my switch wasn't booting up (or even getting 3V across the trinket pads). Afterwards I found I'd bridged the resistor/capacitor above and potentially the pad to the left of the pad circled in red (not the IC):

upload_2019-1-11_23-59-19.png


I'm in the process of cleaning it now, but it's a pain...
Have I screwed something major up?

Cheers, Jono :D
 

mattytrog

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I may be the latest victim of a crappy solder job...

Anyways I was soldering the trinket in, and after checking everything, my switch wasn't booting up (or even getting 3V across the trinket pads). Afterwards I found I'd bridged the resistor/capacitor above and potentially the pad to the left of the pad circled in red (not the IC):

View attachment 154831

I'm in the process of cleaning it now, but it's a pain...
Have I screwed something major up?

Cheers, Jono :D
Unknown until you clean it up and try to boot mate
 

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@mattytrog: Any chance to get an version with just pushing the payload (without reset of simple-uf2) when usb strap is pulled?

PS.: I want to build it myself, do i have just to install Arduino, download the source (main folder), select Trinket and build?
 

mattytrog

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@mattytrog: Any chance to get an version with just pushing the payload (without reset of simple-uf2) when usb strap is pulled?

PS.: I want to build it myself, do i have just to install Arduino, download the source (main folder), select Trinket and build?

Pretty much.

You need Arduino and adafruit sand support libs, flashstorage and dotstar libs.

I'll build you one when I get home. Give me an hour
 
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