Tutorial  Updated

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

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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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mrdude

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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:

If you didn't change any files - the trinket comes with some python file + a couple of others when you plug it into your pc via a usb cable. After a second or two an led starts cycling through various colours + the power led is also lit.

If you pressed the reset button twice - you see some different files.

If it doesn't show up on your computer as a drive, you should try using a different laptop. Or just supply 3.3 volts + gnd to the relevant pins as the usb port might be dodgy - if it starts cycling the led through various colours you'll know it's a laptop/usb cable or usb connector problem - otherwise maybe the bootloader hasn't been programmed or the device is defective.
 
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invaderyoyo

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What if I put a reed switch on the bat line? Would that keep it from draining the battery? I could just use a magnet when I want to inject the payload.

Does anybody know if this would work or why it wouldn't?

Like this:
 

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link42586

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Just got mine finished last night and yeah A case would be nice. Here is some images with A quarter and AAA battery for reference..The cable is A 6in amazonbasics one just black..someonehad one that was white earlier..And I soldered header pins on it so I can take the battery off when necessary. Battery is overkill but 3.7v but other than an on/off switch and case i'm fine with it. Wish I had gotten two just in case I lose this small thing.
 

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Okisub

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Does anyone have a nice close photo of the options to solder to the joycon pin 10 for the wire from #3 on the trinket board?
 

jouyduro

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@mattytrog os it possible to use Arduino nano to send payload to the switch? I don't need it inside, just wanted to use for sending payloads, then unplug it..
Could it work?
I just want to do something with this Arduino, as it is laying around here with no purpose..
 

LineoftheDead

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What if I put a reed switch on the bat line? Would that keep it from draining the battery? I could just use a magnet when I want to inject the payload.

Does anybody know if this would work or why it wouldn't?

Like this:
I was just thinking about doing this lol - OFC it will work :P
I'm gonna swap the reset switch with a reed and throw another reed in for bat on mine when I feel like it

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

Does anyone have a nice close photo of the options to solder to the joycon pin 10 for the wire from #3 on the trinket board?
https://github.com/Quantum-cross/sam-fusee-launcher-internal/blob/master/INSTALL.md
This is the original guide, lots of pictures there.

Honestly, I would just disconnect the battery, solder a wire to pin 10, wrap wire on multimeter lead, connect other multimeter lead to a small sheet of tin foil, then touch the foil to different areas on the circuit board to find continuity. I was gonna do this today.... but its boring
 

invaderyoyo

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I was just thinking about doing this lol - OFC it will work :P
I'm gonna swap the reset switch with a reed and throw another reed in for bat on mine when I feel like it

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


https://github.com/Quantum-cross/sam-fusee-launcher-internal/blob/master/INSTALL.md
This is the original guide, lots of pictures there.

Honestly, I would just disconnect the battery, solder a wire to pin 10, wrap wire on multimeter lead, connect other multimeter lead to a small sheet of tin foil, then touch the foil to different areas on the circuit board to find continuity. I was gonna do this today.... but its boring
Thanks for the response. That's good to hear. It didn't cross my mind to do it for the reset switch.

What about the trinket's boot up time? I've never used one before so idk, but with a pi zero I have to wait a bit before it'll inject the payload. Is that the case here, too?
 

LineoftheDead

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Thanks for the response. That's good to hear. It didn't cross my mind to do it for the reset switch.

What about the trinket's boot up time? I've never used one before so idk, but with a pi zero I have to wait a bit before it'll inject the payload. Is that the case here, too?

skip to the end of my video :D
 

Al-hwj

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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.

I did exactly the same, it look good and work pretty well.
Do you have any idea for a case ?
 

Switchgamer90

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I have a question in regards to the permanent trinket m0 install. Since i already have the right joycon modified to boot into RCM so can i skip soldering trinket points 3 & 4 to the tiny cap and joycon pin 10?
 
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Joxley192

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Yes u can but the trinket might always be on and it will drain the battery of the switch until u put a a switch or a press button on the switch if u look at the pic u might see my press button but it is hard to see

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

and this is it working using point 3 and 4 u just need a good soldering iron i used a 60w and flux this is the smallest thing i have ever soliderd and i havent dont much soldering before only wires and a couple of 360 jtags / rgh so it was a big chance of me fucking up but was totally worth it
 

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Switchgamer90

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Yes u can but the trinket might always be on and it will drain the battery of the switch until u put a a switch or a press button on the switch if u look at the pic u might see my press button but it is hard to see

I see the button now so to clarify things.
Yes u can but the trinket might always be on and it will drain the battery of the switch until u put a a switch or a press button on the switch if u look at the pic u might see my press button but it is hard to see

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

and this is it working using point 3 and 4 u just need a good soldering iron i used a 60w and flux this is the smallest thing i have ever soliderd and i havent dont much soldering before only wires and a couple of 360 jtags / rgh so it was a big chance of me fucking up but was totally worth it


I understand but the risk is too much for soldering on the tiny cap. I could easily take the cap off with too much heat. I read somewhere that you could program the trinket m0 to turn off after couple seconds of injecting the payload hence solving the battery drain problem. I have minimal knowledge of programming so i could be wrong here.
 

Joxley192

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I think u can but not myself if i didnt already have this installed i would give it a go but dont want to have to uninstall point 3 and 4
 

_gianno

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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!
Is this short cable a micro usb to usb C cable??? I cannot find any of it in Italy! Could you post the link of amazon?
 

Talha_Yilmaz

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Hey everyone.

I have a problem with the setup. I have bought the Trinket and i managed to get a red flashy LED while connected to the PC (when i press the button). But the "TRINKETBOOT" drive does not show up. It suppose to show up so that i just can drag and drop the files onto it right? Maybe you guys can help. Thanks
 

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