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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mattytrog

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I rewelded it twice so it looks poor but I checked it's good.
I misspoke, it works perfectly on the "BAT" port of the trinket.

PS: If the tests were done on the 3v port it could be my trinket that is defective.

If it is working though BAT and not through 3v, then you have a break in the trace going from 3v point to 3v output on regulator. Thats the only explanation I can see. Manufacturing defect?

Not to worry though, because the 3v output of the regulator is still connected to SAMD. If it is working perfectly on BAT with the NEW POINT ON SWITCH MOTHERBOARD, then you are OK to finish your work.
 

alexxela767

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If it is working though BAT and not through 3v, then you have a break in the trace going from 3v point to 3v output on regulator. Thats the only explanation I can see. Manufacturing defect?

Not to worry though, because the 3v output of the regulator is still connected to SAMD. If it is working perfectly on BAT with the NEW POINT ON SWITCH MOTHERBOARD, then you are OK to finish your work.
I'm not sure because it worked with the old 2 method and by soldering the 3v from the trinket to the battery it works. I think it's more complex.

Out of curiosity I will try another trinket in the next few days.
 

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wiiando

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I rewelded it twice so it looks poor but I checked it's good.
I misspoke, it works perfectly on the "BAT" port of the trinket.

PS: If the tests were done on the 3v port it could be my trinket that is defective.

Are you trying method 2? I also could not get it to work from a cold boot, same issue as you.

Also noticing issues with my vol buttons now after wiring vol+ up, they work great at first, but if you put the switch to sleep for a while then wake, the vol buttons do not respond, they take either hard long pressing to work again or multiple presses to get working again, after this though they work fine again, until the next sleep at least, been over all of my soldering multiple times.
 

mattytrog

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Are you trying method 2? I also could not get it to work from a cold boot, same issue as you.

Also noticing issues with my vol buttons now after wiring vol+ up, they work great at first, but if you put the switch to sleep for a while then wake, the vol buttons do not respond, they take either hard long pressing to work again or multiple presses to get working again, after this though they work fine again, until the next sleep at least, been over all of my soldering multiple times.
You shouldn`t be using the vol+ strap on method 2.
 

wiiando

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Ok will investigate when I get home this evening :)

Thinking about method 2 again, the issue I was having with method 2 was the power button seemed to have no effect when pressed, I originally thought it was getting stuck in RCM but it couldn't of been, it must of just had no effect when pressed, on the switch at least, but the trinket did light up about 5-10 seconds after the button was pressed.

If i pulled the battery and plugged it back in the switch would turn on by itself, as though the trinket is taking control of the power button? I also experienced the power button not working after going to sleep, it would eventually work after many many presses, but happened again after a sleep, the same issue as the vol+ I've mentioned for method 3 .

Starting to think my trinket is defective, as I was extra careful soldering vol+ and the power switch cap, but with another user reporting method 2 issues, i'm not sure.
 

darrin41

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my friend just install tricket method 1 and its booting to regular ofw screen . he drag and dropped files on trinket any ideas whats wrong
 

redmagejosh

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my friend just install tricket method 1 and its booting to regular ofw screen . he drag and dropped files on trinket any ideas whats wrong
You need to boot to RCM so that the trinket can push the payload.
I have method 1 and would recommend you autorcm so that it will automatically boot into whatever CFW you are using.
 

DarkUnixOs

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Hi again I'm having problem with the recently uf2 files

I'm using this method 6 wires no AutoRCMI just want the latest reinx


this payload works for me perfect
  • Payload ino & UF2 Files For Trinket.zip

but apparently doesn't have the patch any help the solder points are good

Do I need RST?? pad?
 
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morganno

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Hi, a little mattytrog question you will have a backup of your microSD your PI with openOCD so that I can flashed the ATSAMD21E18 thank you very much
 

mattytrog

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OP Updated with new multipayload build. Give it a test if you are in a position to. I can change payloads as wished. Just let me know. Might run a poll.

Hi, a little mattytrog question you will have a backup of your microSD your PI with openOCD so that I can flashed the ATSAMD21E18 thank you very much

Erm... I guess so. Won`t be tonight though as my pi is all away. It is just a bare raspbian image with openOCD.
Tomorrow?

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

Got a scrip screw on joy on rail . Any ideas on removing it

Whats stripped?

The thread?
The head?
Is it cross-threaded?
 

mattytrog

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I tried the new method 1.3 with no luck the trinket stays off! any other suggestions?

Shit... Something in the source. To get out of it, touch pin 1 to GND or flash back to what you were on. Updating now.

The payload counter is set at zero by default. I have corrected this and uploading now.

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

@DarkUnixOs

Corrected. Download from OP again! Sorry again.
 
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mattytrog

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I redownloaded the file again with no luck as I said Ive mode the trinket with 6 cables maybe is in the setup I tried other files and works but this with latest have no luck sorry for bothering!
It's ok.

If you don't have pin 1 connected, then it will function just like the Hekate UF2. (new methods)
 

DarkUnixOs

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The only way to start new REinx with the patches on it is I iflash SXOS and run the reinx patched from SXOS
But its ok ill wait for others rev from you thanx for the help ill check futhers post again thanx if you have other"s files to test let me know or some one jus let me know from PM thanx!!
 

mattytrog

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The only way to start new REinx with the patches on it is I iflash SXOS and run the reinx patched from SXOS
But its ok ill wait for others rev from you thanx for the help ill check futhers post again thanx if you have other"s files to test let me know or some one jus let me know from PM thanx!!

Ok. ReiNX isn't on there.

I can put it on, but there are so many different versions floating around, I can't keep up.

I don't use it you see. But I can add a version that works into the multi payload if you like. Just post it on thread and I'll do it
 

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