3DS:Rehid

Rehid

Developer(s)	hax0kartik
Console	Nintendo 3DS
Version	4.0 (July 20, 2023 (2023-07-20))
Links
GitHub	hax0kartik/rehid
Download
Universal-DB GitHub release

Rehid is a rewrite of the 3DS' hid module, to allow for the remapping of buttons or the touch screen.

Installation

Universal UpdaterManual

what you need

• A working internet connection
• Universal Updater installed on your console
• Luma3DS updated to 13.0+

instructions

1. Power on the console
2. Launch Universal-Updater
3. Tap the magnifying glass on the bottom screen, then search for rehid
4. Press A while hovering over rehid from the list of homebrew
5. Choose rehidhelper.cia
6. Wait until the app installs
7. Close Universal-Updater
8. Launch RehidHelper and select Download Rehid
9. Wait for it to download and reboot, then press B to exit the app
10. Power off your Console
11. While holding SELECT, power on your console to enter Luma3DS configuration
12. Ensure that "Enable loading external FIRMs and modules" is selected
13. Press START to save and exit

what you need

• the latest release of Rehid (the 0004013000001D02.cxi and rehidhelper.cia files)
• FBI installed on your console
• Luma3DS updated to 13.0+

Instructions

1. Copy 0004013000001D02.cxi to sd:/luma/sysmodules/
   • Create the folder sysmodules if it doesn't exist
2. Copy rehidhelper.cia to the root of your SD card
3. Reinsert your SD card into your console
4. Launch FBI and select SD -> rehidhelper.cia -> Install and delete CIA
5. Press A and wait for the CIA to install, then exit FBI
6. Power off your Console
7. While holding SELECT, power on your console to enter Luma3DS configuration
8. Ensure that "Enable loading external FIRMs and modules" is selected
9. Press START to save and exit

Remapping buttons

GeneratedManual

1. Go to 3DS Remap Builder to generate your remappings
2. When finished click on Show as QR code
   • If you are unable to scan QR codes on your console, instead click Build this remap and place the downloaded rehid.json into a rehid folder on the root of your SD card, or rehid/(title ID)/ to remap a specific game. You can find the title ID of your game using 3dsdb
3. Power on your console and launch RehidHelper
4. Select Scan QR Code and scan the generated QR code from the website
5. Press A to proceed
6. Select a title from the list for the remap to be applied to, or select global for all titles
7. Press start to exit

1. Create a rehid.json file with the remappings you want. possible options include:

   "keys": which maps a key press to another key press.
   Possible Keys are: A, B, X, Y, SELECT, START, ZL, ZR, L, R, LEFT, RIGHT, UP, DOWN, CLEFT(CPAD), CRIGHT(CPAD), CUP(CPAD), CDOWN(C-PAD), CSLEFT(C-STICK), CSRIGHT(C-STICK), CSUP(C-STICK), CSDOWN(C-STICK)

   {"keys":[{"press":"ZR","get":"R"},{"press":"ZL","get":"L"}]}
   

   With the above, any time you press the ZR key, R key would be triggered, and any time you press the ZL key, L key would be triggered.

   You can also do custom key combos;

   {"keys":[{"press":"X+Y","get":"R"},{"press":"SELECT","get":"L+R"}]}
   

   With this any time you press X+Y, R key would be triggered, and any time you press the SELECT button, both L and R would be triggered.

   "cpad":, which maps a key press to a circle pad x and y coordinate from -190 to 190;

   {"cpad":[{"press":"CUP","get":[0,190]},{"press":"CDOWN","get":[0,-190]},{"press":"CLEFT","get":[-190,0]},{"press":"CRIGHT","get":[190,0]}]}
   

   "touch":, which maps a key press to a touchscreen x and y coordinate from 0,0 top left to 320,240 bottom right;

   {"touch":[{"press":"LEFT+UP","get":[0,0]},{"press":"RIGHT+DOWN","get":[320,240]}]}
   

   "touchtokeys": which maps two coordinate pairs to make a box on the touch screen that when tapped will output a key press;

   {"touchtokeys":[{"press":[0,0,50,50],"get":"A"}]}
   

   For this example, tapping anywhere in a 50x50 pixel box in the top left will press A.

   Other options include:
   "cpadtodpad":true maps the C-pad with D-pad key presses
   "dpadtocpad":true maps the D-pad with C-pad key presses
   "overidecpadpro":true makes it so games don't recognize the circle pad pro
   "homebutton": maps the HOME button to a key press

   These Options can be strung together into a single line, for example:

   {"keys":[{"press":"ZR","get":"R"},{"press":"ZL","get":"L"}],"cpad":[{"press":"CUP","get":[0,190]},{"press":"CDOWN","get":[0,-190]}],"touch":[{"press":"LEFT+UP","get":[0,0]},{"press":"RIGHT+DOWN","get":[320,240]}],"touchtokeys":[{"press":[0,0,50,50],"get":"A"}],"cpadtodpad":true,"dpadtocpad":true,"overridecpadpro":true,"homebutton":"ZR+ZL"}
   

2. Copy rehid.json to a rehid folder on the root of your SD card
   • If you want to the remapping to be used for a specific title, copy rehid.json to rihid/(title ID)/ instead. You can find the title ID of your game using 3dsdb

Troubleshooting

An exception occurred

If your console crashes while booting with "an exception occurred" and the "current proccess:" is hid, you may have an old version of Rehid thats causing issues. Look for and delete /luma/titles/0004013000001D02 and /luma/titles/0004013000003302. If these don't exist, you may have a more serious hardware issue, join the Nintendo Homebrew Discord and ask, in English, for help.