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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ganons

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If you have all the straps installed, and the chip can trigger RCM itself, you don't need auto RCM any more.
Was told this:
Its using the Mattytrog fuse suite, and is programmed with the following:

1) PART_1_FUSEE_ITSYBITSY-c40fc1c.uf2 (first firmware)
2) ITSYBIT.UF2 (second firmware)
3) SETTINGS_B_JVU_B1_2_LP.UF2 (which is an EPROM update to program for connected straps)
4) update-bootloader-FUSEE_ITSYBITSY-c40fc1c.bin (fusee.bin which is now in the root of your sd card)
 
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Gismor

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hello, my switch is working fine with the firmware from matty, but my firmware is a old one i think 2 years ago. should i update my trinket firmware or not?
because system is running perfect. dont know what i better with the new firmware
 

swutch

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hello, my switch is working fine with the firmware from matty, but my firmware is a old one i think 2 years ago. should i update my trinket firmware or not?
because system is running perfect. dont know what i better with the new firmware

No update needed when everything works.
 
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Fr33hk

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Gemma M0 Install

Hey gang... Trinket M0's had disappeared and only alternative I could find were the Gemma M0 for $8. Couldn't find any previous posts of an install here or on Reddit so I thought I'd share.

Now I'm no solder master by any means, this is only my forth micro soldering attempt, but I will say I'm four for four on two trinkets and two HWFLY 5.0's on V2 consoles.

On to the install:

Prepping is a little more time consuming, removal is required for the USB port, power plug, and on off switch, I don't have any soldering heat station, so I just use the giant heat gun and it worked fine. And finally, bridging the switch to on after removal.

Size, lol... As you guys can see in the picture the diagram on OP was not to scale 🤣. Trimmed the metal shield as best I could and layered Kapton tape on the bottom around the perimeter to eliminate sharp edges.

Other than prep and placement everything else is very standard... Yeah yeah I know I unnecessarily installed it upside down... But I didn't want to screw with tiny short USB wires.

I hope somebody finds this useful :)
 

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wolf_

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So I have 2 switches that have trinkets installed before fusee was updated should I update the trinkets and how would I go about it?
 

BaamAlex

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So I have 2 switches that have trinkets installed before fusee was updated should I update the trinkets and how would I go about it?
An update for the chip is not really necessary. I have trinkets installed in my both switches. And both have the Fusée suite V6 or so. Never change a running system.
 
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wolf_

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Ok so just update atmosphere and fusee on the sdcard then? Cause after doing that I noticed a green screen on start up
 

Doughston

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So, I've tried to install a trinket m0 on my switch and messed up. I've removed a pin on the motherboard and I'm not sure that I can put it back. I stil have it tho. Here are some images, the first one is my switch (sorry for the soldering iron, I could not get rid of it) and the second is the image from here. In red is the pin that I've removed and in blue the other one (it's still on the motherboard). What do I have to do ?
(put ibb dot com slash these codes to see the images, i cant send direct links yet :/)
RNK8PNH
Xxntkmy
Thanks !
 

ganons

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So have a trinket installed on v1 switch for nearly 2 months and everything was working great. Now since yesterday, it randomly freezes or reboots and sometimes gives this error:
A fatal error occured when running Fusee.
Failed to initialise the SD card: 0x00004a18

Switch is on 16.0.1 and Atmosphère 1.5.4
 

Hayato213

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So have a trinket installed on v1 switch for nearly 2 months and everything was working great. Now since yesterday, it randomly freezes or reboots and sometimes gives this error:
A fatal error occured when running Fusee.
Failed to initialise the SD card: 0x00004a18

Switch is on 16.0.1 and Atmosphère 1.5.4

Do you eject the SD a lot?
 

BaamAlex

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So have a trinket installed on v1 switch for nearly 2 months and everything was working great. Now since yesterday, it randomly freezes or reboots and sometimes gives this error:
A fatal error occured when running Fusee.
Failed to initialise the SD card: 0x00004a18

Switch is on 16.0.1 and Atmosphère 1.5.4
Does Hekate say that your SD is running in 1 bit mode? If yes, then there is definitely something wrong with the connections. It could be a pin of the connector that came loose from the motherboard or maybe a pin got broken when you put back the connector.
 

ganons

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Do you eject the SD a lot?
No
Does Hekate say that your SD is running in 1 bit mode? If yes, then there is definitely something wrong with the connections. It could be a pin of the connector that came loose from the motherboard or maybe a pin got broken when you put back the connector.
I'll check. What pin and connector is this as someone else did the install.
 

mrdude

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So have a trinket installed on v1 switch for nearly 2 months and everything was working great. Now since yesterday, it randomly freezes or reboots and sometimes gives this error:
A fatal error occured when running Fusee.
Failed to initialise the SD card: 0x00004a18

Switch is on 16.0.1 and Atmosphère 1.5.4
Remove the sd card and boot into oridinary firmware, if you don't get any issues it's nothing to do with the trinket. If you only get errors with the sd card inserted you probably have a corrupt sd card.
 
Last edited by mrdude,
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