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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64Dp128k

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Just finished my external trinket m0 dongle using 20mm Coin Cell Breakout w/On-Off Switch (CR2032). Works great! Hoping to add usb c breakout board and maybe some kind of housing.
 

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metaljay

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Just finished my external trinket m0 dongle using 20mm Coin Cell Breakout w/On-Off Switch (CR2032). Works great! Hoping to add usb c breakout board and maybe some kind of housing.
looks great, excellent soldering!
why didn't you want to install it in the switch?
 

64Dp128k

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looks great, excellent soldering!
why didn't you want to install it in the switch?
Could do but screw on joycon rail stripped don't want to risk it I know there is alternate point for rcm strap but still. I already opened up previously to do battery fix a few weeks back.
 
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invaderyoyo

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Yes. Very possible.

The drill goes like this...

Connect to 4v feed from battery, connect to testpoints behind USB port.

HOWEVER......... The trinket stays powered. So you need a little addition to the trinket (a couple of components) which only let the trinket run for 3 or 4 seconds as power button pressed. Or it will run your battery down eventually. So you need to fit it to another point on board with the other bits that only let it run for 3 or 4 seconds.

I said I`d do a write-up how I`d done mine. And I will. Its just one of them "get round to it" jobs. The pain in the arse comes when you want to update the payload on the trinket. You either need to drill a hole in the back of the switch casing and shield, or it is possible to attach it to the metal shielding on the back and you can just press the back cover to activate the switch as its a tight fit.

It isn`t for the feint of heart but it works. The possibility of killing your switch through bad soldering is huge.
What components do we need? If I follow this guide it'll stay powered on?

https://github.com/Quantum-cross/sam-fusee-launcher-internal/blob/master/INSTALL.md
 

_gianno

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Just finished my external trinket m0 dongle using 20mm Coin Cell Breakout w/On-Off Switch (CR2032). Works great! Hoping to add usb c breakout board and maybe some kind of housing.

This is by far the best diy dongle project! I’ve bought all your components! Hope I can get a result at least similar to your.

Ps: can I use directly a microusb to usb C or I must use a microusb to usb a OTG and connect a usb a to usb C?
 
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Soluble

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Just finished my external trinket m0 dongle using 20mm Coin Cell Breakout w/On-Off Switch (CR2032). Works great! Hoping to add usb c breakout board and maybe some kind of housing.
Probably one of the simplest/cheapest/easiest dongle solutions so far! Good job. I have around 20 of the cr2032 boards I pulled out of an old display at work. Might give this a crack just so I can use one for something
 
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link42586

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Got A trinket but i'm not trying to solder it..Just want A dongle..Will these files work? I want hekate v2.3 on it so when I RCM the switch I just hook this up and press the reset button to run to payload. So I got this right...

1.Plug into pc
2.hit reset button twice for bootloader mode
3.overwrite 3 files on device with the new 3 files i've downloaded.
4.do what I am looking to do as stated up top.
 
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64Dp128k

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This is by far the best diy dongle project! I’ve bought all your components! Hope I can get a result at least similar to your.

Ps: can I use directly a microusb to usb C or I must use a microusb to usb a OTG and connect a usb a to usb C?
Nice one, waiting for one in the post to test should be fine. Also a usb c breakout board.
 

link42586

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Got A trinket but i'm not trying to solder it..Just want A dongle..Will these files work? I want hekate v2.3 on it so when I RCM the switch I just hook this up and press the reset button to run to payload. So I got this right...

1.Plug into pc
2.hit reset button twice for bootloader mode
3.overwrite 3 files on device with the new 3 files i've downloaded.
4.do what I am looking to do as stated up top.


Figured it out..Also I got A single cable from amazon that is USB-C to micro B that is 6 inches works fine. Amazon branded.
 

64Dp128k

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Probably one of the simplest/cheapest/easiest dongle solutions so far! Good job. I have around 20 of the cr2032 boards I pulled out of an old display at work. Might give this a crack just so I can use one for something
Nice one, waiting for one in the post to test should be fine. Also a usb c breakout board.


Anyone got any ideas for some kind of housing for it?
 

64Dp128k

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looks great, excellent soldering!
why didn't you want to install it in the switch?
This is the best yet simple payload injector i have seen here

Got the micro usb to usb cable and works perfect . Thinking of adding usb c breakout shown in pic. Anyone know alternate solder points as they are tiny. Btw thanks to the Op!
 

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mattytrog

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Sure is!

Clock speed is slower too. And (not 100%) the storage is less too.

Never owned one but from memory, thats why. People will correct me if im wrong though.
 

Cosmic_Link

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Got my trinket today. Was planning to do the internal mod.

Have been having a bit of a mare with the trinket though. I haven't had any luck with even getting it to be detected by my PC to allow me to programme it, or any other computer which I have access to for that matter.

When the trinket is plugged it, I get the green power light, and nothing else. The RGB LED doesn't blink. Doesn't get recognized as a connected device in Windows. Nothing. I am at the point now where I reckon the board is knackered and I should get a replacement, but was hoping somebody with more experience with this can point me in the right direction for a bit of troubleshooting. I am aware that the trinket has an issue with USB 3.0 ports, so have tried laptops with US 2.0, to no avail. I have tried various USB cables to try and rule that out. I have tried using Ubuntu to see if it will be detected in ubuntu. I have not even been able to get the trinket to show at all on a PC. :( I have ordered another USB sync cable incase this is the issue.

If somebody might have had any issues with the Trinket M0 before that might be able to offer an insight, I would appreciate it.

I've spent long enough on this tonight now, so I'm going to bed and will check back here tomorrow.

Thanks to anybody who is able to offer any advise or pointers. :yay:
 

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