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

Discussion in 'Switch - Tutorials' started by mattytrog, Jun 20, 2018.

  1. mattytrog
    OP

    mattytrog You don`t want to listen to anything I say.

    Member
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    Apr 27, 2018
    United Kingdom
    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.

    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.
    ==================================================
    Rebug SwitchME M0. Use Trinket files.
    Solder as laid out in the following picture

    rebugfinal.
    ==================================================
    RCMX86 - Internal modchip version.
    Solder as laid out in the following picture
    RCMX86-Internal-Final.

    ==================================================
    Gemma M0. Use Gemma files.
    Solder as laid out in the following picture


    gemma final.
    ==================================================
    ItsyBitsy M0 Express. Use ItsyBitsy files.
    Solder as laid out in the following picture
    itsybitsyfinal.



    ==================================================
    Feather M0 Express. Use Feather files.
    Solder as laid out in the following picture
    feather_final_test.



    OEM-style Boot screen for Hekate: Download here

    bootlogo. [/SUCCESS]


    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.


    Alternative Solder Points
    An old pic. Just thought I`d share.

    s-l1600.
    Credit to @consolex :
    DqR4L3nWkAAdIqK.
    alternative3v.




    Replacement Parts List

    Parts

    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 - You can use Switchboot or Fusee-UF2 if you wish... No messing around with UF2 files any more.

    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.

    Q - How do I change my UF2 file once I have installed the chip?
    A - Let your switch boot up, so you are on your home screen. Make sure you are NOT plugged into anything. Press RESET TWICE on the chip (trinket / rebug / whatever), then plug in to your PC. A drive should come up. Called, <SOMETHING>BOOT. ie REBUGBOOT, TRINKETBOOT, ITSYBOOT. Drag your chosen UF2 file to this drive (not in a zip or anything). It will flash the chip automagically.


    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
    READ THIS
     

    Attached Files:

    Last edited by mattytrog, Nov 5, 2019
  2. epickid37

    epickid37 ( ͡° ͜ʖ ͡°)

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    Jan 4, 2017
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    Mt. Celeste
    Nice
     
  3. shabbypenguin

    shabbypenguin Advanced Member

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    Apr 29, 2015
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    Can you share the sketch so folks can swap out the payload as needed?
     
  4. Nice, now we can have a $9 SX Pro once the SX OS cracking is complete.
     
  5. mattytrog
    OP

    mattytrog You don`t want to listen to anything I say.

    Member
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    Apr 27, 2018
    United Kingdom
    It is already in the binary. You load it into Arduino and it will give you a "main" and a "payload.h"
     
    mooglazer and gamer4lif3 like this.
  6. pro-pumper

    pro-pumper Member

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    Apr 3, 2018
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    very nice..
     
  7. salamandrusker

    salamandrusker GBAtemp Regular

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    Mar 12, 2018
    Spain
    nice job
     
  8. jahym

    jahym Newbie

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    Jun 16, 2018
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    what does it do exactly ???
     
  9. Trappie

    Trappie GBAtemp Regular

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    May 20, 2018
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    Deliver the payload and launch sx os
     
  10. wicksand420

    wicksand420 GBAtemp Addict

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    just deliver a payload, unless you own sx os
     
    Last edited by wicksand420, Jun 20, 2018
  11. olku

    olku Advanced Member

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    Oct 31, 2015
    Estonia
    Estonia
    Thank you for this.

    Is it possible to install Trinket m0 inside Switch and run it from Switch battery? I think it should fit, but I don't know if Switch has test points to solder to.
     
  12. mattytrog
    OP

    mattytrog You don`t want to listen to anything I say.

    Member
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    Apr 27, 2018
    United Kingdom
    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.
     
    olku and hippy dave like this.
  13. Rusb

    Rusb GBAtemp Regular

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    Apr 17, 2014
    Thank you, tomorrow I'll have the trinket to test it!
     
  14. LucaFraga

    LucaFraga Advanced Member

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    Aug 10, 2009
    Italy
    So, is there any Trinket M0 cheap chinese knockoff we can buy to save on money? Here in Italy it's EUR 15 plus shipping
     
  15. devleon

    devleon Member

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    Aug 17, 2016
    Gambia, The
    Is the trinket going to be powered by the switch alone? I thought the switch doesn't deliver power in RCM mode which is why the SX Pro has these capacitors in them... Or am I wrong here?
     
  16. mattytrog
    OP

    mattytrog You don`t want to listen to anything I say.

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    Apr 27, 2018
    United Kingdom
    The trinket is battery powered. It has a regulator on it. Good for up to about 9v I think. Cut a USB cable up, solder it to the gnd and batt pads on trinket and use a powerbank? Or fit internally. Coin cell? Anything really from 3v up to 8v ish?
     
  17. bluke

    bluke GBAtemp Regular

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    Feb 2, 2010
    Do I need to copy payload.bin into it ?
     
  18. Joxley192

    Joxley192 Advanced Member

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    Feb 22, 2018
    United Kingdom
    thank u for this cause i have been trying to make one of these and program it but it just kept on saying error cant find trinket m0 and this as save me alot of a lot of time now just looking to find a way to get it to work in side the switch o it doesnt drain my battery :)
     
  19. mattytrog
    OP

    mattytrog You don`t want to listen to anything I say.

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    Apr 27, 2018
    United Kingdom
    No it is ready to go. Just drag and drop to TRINKETBOOT drive
     
  20. nachuz

    nachuz GBAtemp Advanced Fan

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    May 21, 2017
    Chile
    and then a SX OS update releases and it fucks the crack
     
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