The information contained in info.json
is combined with the config.h
and rules.mk
files, dynamically generating the necessary configuration for your keyboard at compile time. It is also used by the QMK API, and contains the information QMK Configurator needs to display a representation of your keyboard. Its key/value pairs are ruled by the data/schemas/keyboard.jsonschema
file. To learn more about the why and how of the schema file see the Data Driven Configuration page.
You can create info.json
files at every level under qmk_firmware/keyboards/<keyboard_name>
. These files are combined, with more specific files overriding keys in less specific files. This means you do not need to duplicate your metadata information. For example, qmk_firmware/keyboards/clueboard/info.json
specifies information common to all Clueboard products, such as manufacturer
and maintainer
, while qmk_firmware/keyboards/clueboard/66/info.json
contains more specific information about Clueboard 66%.
keyboard_name
(Required)- A free-form text string describing the keyboard. This will be used as the USB product string. Can include Unicode characters, escaped to ASCII eg.
\u03A8
(Ψ). - Example:
"Clueboard 66%"
- A free-form text string describing the keyboard. This will be used as the USB product string. Can include Unicode characters, escaped to ASCII eg.
maintainer
(Required)- GitHub username of the maintainer, or
qmk
for community maintained boards. - Example:
"skullydazed"
- GitHub username of the maintainer, or
manufacturer
(Required)- A free-form text string describing the keyboard's manufacturer. This will be used as the USB manufacturer string. Can include Unicode characters, escaped to ASCII eg.
\u03A8
(Ψ). - Example:
"Clueboard"
- A free-form text string describing the keyboard's manufacturer. This will be used as the USB manufacturer string. Can include Unicode characters, escaped to ASCII eg.
url
(Required)- A URL to the keyboard's product page, QMK.fm/keyboards page, or other page describing information about the keyboard.
- Example:
"https://clueboard.co"
bootloader_instructions
- Instructions for putting the keyboard into a mode that allows for firmware flashing.
- Example:
"Press the button marked RESET on the back of the PCB"
tags
- A list of tags describing the keyboard.
- Example:
["ortho", "split", "rgb"]
board
- Override the default ChibiOS board name (ARM-based keyboards only).
- Example:
"BLACKPILL_STM32_F411"
bootloader
- The bootloader in use on the keyboard. Required if
development_board
is not specified.
- The bootloader in use on the keyboard. Required if
development_board
- The microcontroller development board, if applicable.
- Example:
"promicro"
pin_compatible
- The form factor of the development board, if applicable. Must be one of
elite_c
,promicro
.
- The form factor of the development board, if applicable. Must be one of
processor
- The microcontroller in use on the keyboard. Required if
development_board
is not specified.
- The microcontroller in use on the keyboard. Required if
build
debounce_type
- The debounce algorithm to use. Must be one of
asym_eager_defer_pk
,custom
,sym_defer_g
,sym_defer_pk
,sym_defer_pr
,sym_eager_pk
,sym_eager_pr
.
- The debounce algorithm to use. Must be one of
firmware_format
- The format of the final output binary. Must be one of
bin
,hex
,uf2
.
- The format of the final output binary. Must be one of
lto
- Enable Link-Time Optimization.
- Default:
false
features
- A dictionary of features to enable or disable.
- Example:
{ "rgb_matrix": true, "rgblight": false }
qmk
locking
enabled
- Enable locking switch support.
- Default:
false
resync
- Keep switch state consistent with keyboard LED state.
- Default:
false
tap_capslock_delay
- The delay between keydown and keyup for Caps Lock tap events in milliseconds.
- Default:
80
(80 ms)
tap_keycode_delay
- The delay between keydown and keyup for tap events in milliseconds.
- Default:
0
(no delay)
tapping
hold_on_other_key_press
- Default:
false
- Default:
hold_on_other_key_press_per_key
- Default:
false
- Default:
permissive_hold
- Default:
false
- Default:
permissive_hold_per_key
- Default:
false
- Default:
retro
- Default:
false
- Default:
retro_per_key
- Default:
false
- Default:
term
- Default:
200
(200 ms)
- Default:
term_per_key
- Default:
false
- Default:
toggle
- Default:
5
- Default:
Configures the APA102 driver.
apa102
clock_pin
(Required)- The GPIO pin connected to
CI
on the first LED in the chain.
- The GPIO pin connected to
data_pin
(Required)- The GPIO pin connected to
DI
on the first LED in the chain.
- The GPIO pin connected to
default_brightness
- The initial global brightness level (independent of the RGB data), from 0 to 31.
- Default:
31
Configures the Audio feature.
audio
default
on
- The default audio enabled state.
- Default:
true
clicky
- The default audio clicky enabled state.
- Default:
true
macro_beep
- Play a short beep for
\a
(ASCIIBEL
) characters in Send String macros. - Default:
false
- Play a short beep for
pins
(Required)- The GPIO pin(s) connected to the speaker(s).
voices
- Use multiple audio voices.
- Default:
false
Configures the Backlight feature.
backlight
as_caps_lock
- Use the backlight as a Caps Lock indicator.
- Default:
false
breathing
- Whether backlight breathing is enabled.
- Default:
false
breathing_period
- The length of one backlight breathing cycle in seconds.
- Default:
6
(6 seconds)
default
on
- The default backlight enabled state.
- Default:
true
breathing
- The default backlight breathing state.
- Default:
false
brightness
- The default brightness level.
- Default:
max_brightness
driver
- The driver to use. Must be one of
custom
,pwm
,software
,timer
. - Default:
"pwm"
- The driver to use. Must be one of
levels
- The number of brightness levels (excluding off), from 1 to 31.
- Default:
3
max_brightness
- The maximum PWM value which brightness is scaled to, from 0 to 255.
- Default:
255
on_state
- The logical GPIO state required to turn the LEDs on.
- Default:
1
(on = high)
pin
- The GPIO pin connected to the backlight circuit.
pins
- A list of GPIO pins connected to the backlight LEDs (
software
andtimer
drivers only).
- A list of GPIO pins connected to the backlight LEDs (
Configures the Bluetooth feature.
bluetooth
driver
- The driver to use. Must be one of
custom
,bluefruit_le
,rn42
.
- The driver to use. Must be one of
Configures the Bootmagic feature.
bootmagic
enabled
- Enables the Bootmagic feature.
- Default:
false
matrix
- The matrix position of the key to check during startup. This should generally be set to the (physically) top left key.
- Default:
[0, 0]
Configures the Caps Word feature.
caps_word
both_shifts_turns_on
- Activate Caps Word by pressing both Shift keys.
- Default:
false
double_tap_shift_turns_on
- Activate Caps Word by pressing Left Shift twice.
- Default:
false
enabled
- Enables the Caps Word feature.
- Default:
false
idle_timeout
- The amount of time before Caps Word automatically deactivates in milliseconds.
- Default:
5000
(5 seconds)
invert_on_shift
- Invert shift state instead of deactivating Caps Word when Shift is pressed.
- Default:
false
Configures the Combo feature.
combo
term
- The amount of time to recognize a combo in milliseconds.
- Default:
50
(50 ms)
Configures the DIP Switches feature.
dip_switch
enabled
- Enable the DIP Switches feature.
- Default:
false
pins
- A list of GPIO pins connected to the MCU.
matrix_grid
- A list of matrix locations in the key matrix.
- Example:
[ [0,6], [1,6], [2,6] ]
Configures the EEPROM driver.
eeprom
driver
- The EEPROM backend to use. Must be one of
custom
,i2c
,legacy_stm32_flash
,spi
,transient
,vendor
,wear_leveling
. - Default:
"vendor"
- The EEPROM backend to use. Must be one of
wear_leveling
driver
- The driver to use. Must be one of
embedded_flash
,legacy
,rp2040_flash
,spi_flash
,custom
.
- The driver to use. Must be one of
backing_size
- Number of bytes used by the wear-leveling algorithm for its underlying storage, and needs to be a multiple of the logical size.
logical_size
- Number of bytes “exposed” to the rest of QMK and denotes the size of the usable EEPROM.
Configures the Encoder feature.
encoder
rotary
- A list of encoder objects.
pin_a
(Required)- The GPIO pin connected to the encoder's
A
pin.
- The GPIO pin connected to the encoder's
pin_b
(Required)- The GPIO pin connected to the encoder's
B
pin.
- The GPIO pin connected to the encoder's
resolution
- The number of edge transitions on both pins required to register an input.
- Default:
4
- A list of encoder objects.
Configures the LED Indicators feature.
indicators
caps_lock
- The GPIO pin connected to the Caps Lock LED.
compose
- The GPIO pin connected to the Compose LED.
kana
- The GPIO pin connected to the Kana LED.
num_lock
- The GPIO pin connected to the Num Lock LED.
on_state
- The logical GPIO state required to turn the LEDs on.
- Default:
1
(on = high)
scroll_lock
- The GPIO pin connected to the Scroll Lock LED.
The layouts
portion of the dictionary contains several nested dictionaries. The outer layer consists of QMK layout names, for example LAYOUT_60_ansi
or LAYOUT_60_iso
.
Each key dictionary in a layout describes the physical properties of a key. If you are familiar with the Raw Data format for Keyboard Layout Editor, you will find many of the concepts the same. Key names and layout choices are reused wherever possible, but unlike KLE each key is stateless, inheriting no properties from the keys that came before it.
All key positions and rotations are specified in relation to the top-left corner of the keyboard, and the top-left corner of each key.
The ISO enter key is represented by a 1.25u×2uh key. Renderers which utilize info.json layout data (such as qmk info -l
and the QMK Configurator) should display this key as expected.
community_layouts
- A list of community layouts supported by the keyboard.
- Example:
["60_ansi", "60_iso"]
layout_aliases
- A mapping of layout aliases to layout definitions.
- Example:
{ "LAYOUT_ansi": "LAYOUT_60_ansi", "LAYOUT_iso": "LAYOUT_60_iso" }
layouts
- A dictionary of layouts supported by the keyboard.
LAYOUT_<layout_name>
layout
- A list of key dictionaries comprising the layout. Each key dictionary contains:
matrix
(Required)- The matrix position for the key.
- Example:
[0, 4]
(row 0, column 4)
x
(Required)- The absolute position of the key in the horizontal axis, in key units.
y
(Required)- The absolute position of the key in the vertical axis, in key units.
h
- The height of the key, in key units.
- Default:
1
(1u)
label
- What to name the key. This is not a key assignment as in the keymap, but should usually correspond to the keycode for the first layer of the default keymap.
- Example:
"Escape"
r
- The rotation angle in degrees. Currently not implemented.
rx
- The absolute X position of the rotation axis. Currently not implemented.
ry
- The absolute Y position of the rotation axis. Currently not implemented.
w
- The width of the key, in key units.
- Default:
1
(1u)
encoder
- The index of an encoder this key should be linked to
- Example:
{"label": "Shift", "matrix": [4, 0], "x": 0, "y": 4.25, "w": 2.25}
- A list of key dictionaries comprising the layout. Each key dictionary contains:
Configures the Leader Key feature.
leader_key
timing
- Reset the
timeout
on each keypress. - Default:
false
- Reset the
strict_processing
- Do not extract the tap keycodes from Layer-Tap and Mod-Tap key events.
- Default:
false
timeout
- The amount of time to complete a leader sequence in milliseconds.
- Default:
300
(300 ms)
Configures the LED Matrix feature.
led_matrix
animations
- A dictionary of effects to enable or disable. Effects which are absent default to
false
. - Example:
{ "alphas_mods": true, "breathing": true, "cycle_left_right": false }
- A dictionary of effects to enable or disable. Effects which are absent default to
center_point
- The centroid (geometric center) of the LEDs. Used for certain effects.
- Default:
[112, 32]
default
animation
- The default effect. Must be one of
led_matrix.animations
- Default:
"solid"
- The default effect. Must be one of
on
- The default enabled state.
- Default:
true
val
- The default brightness level.
- Default:
max_brightness
speed
- The default animation speed.
- Default:
128
driver
(Required)- The driver to use. Must be one of
custom
,is31fl3218
,is31fl3731
,is31fl3733
,is31fl3736
,is31fl3737
,is31fl3741
,is31fl3742a
,is31fl3743a
,is31fl3745
,is31fl3746a
,snled27351
.
- The driver to use. Must be one of
layout
(Required)- List of LED configuration dictionaries. Each dictionary contains:
flags
(Required)- A bitfield of flags describing the type of LED.
x
(Required)- The position of the LED in the horizontal axis, from 0 to 224.
y
(Required)- The position of the LED in the vertical axis, from 0 to 64.
matrix
- The key matrix position associated with the LED.
- Example:
[0, 2]
- Example:
{"matrix": [2, 1], "x": 20, "y": 48, "flags": 2}
- List of LED configuration dictionaries. Each dictionary contains:
led_flush_limit
- Limits in milliseconds how frequently an animation will update the LEDs.
- Default:
16
led_process_limit
- Limits the number of LEDs to process in an animation per task run (increases keyboard responsiveness).
- Default:
led_count / 5
max_brightness
- The maximum value which brightness is scaled to, from 0 to 255.
- Default:
255
react_on_keyup
- Animations react to keyup instead of keydown.
- Default:
false
sleep
- Turn off the LEDs when the host goes to sleep.
- Default:
false
speed_steps
- The number of speed adjustment steps.
- Default:
16
split_count
- For split keyboards, the number of LEDs on each half.
- Example:
[16, 16]
timeout
- The LED activity timeout in milliseconds.
- Default:
0
(no timeout)
val_steps
- The number of brightness adjustment steps.
- Default:
8
debounce
- The debounce time in milliseconds.
- Default:
5
(5 ms)
diode_direction
- Which way the diodes are "pointing". Unused for
matrix_pins.direct
. Must be one ofCOL2ROW
,ROW2COL
.
- Which way the diodes are "pointing". Unused for
matrix_pins
cols
- A list of GPIO pins connected to the matrix columns.
- Example:
["A0", "A1", "A2"]
custom
- Whether to use a custom matrix scanning implementation.
- Default:
false
custom_lite
- Whether to use a "lite" custom matrix scanning implementation.
- Default:
false
direct
- A 2-dimensional list of GPIO pins connected to each keyswitch, forming the "matrix" rows and columns.
- Example:
[ ["A0", "A1", "A2"], ["B0", "B1", "B2"], ["C0", "C1", "C2"] ]
ghost
- Whether the matrix has no anti-ghosting diodes.
- Default:
false
input_pressed_state
- The logical GPIO state of the input pins when a key is pressed.
- Default:
0
(pressed = low)
io_delay
- The amount of time to wait between row/col selection and col/row pin reading, in microseconds.
- Default:
30
(30 µs)
rows
- A list of GPIO pins connected to the matrix rows.
- Example:
["B0", "B1", "B2"]
Configures the Mouse Keys feature.
mouse_key
delay
enabled
- Enables the Mouse Keys feature.
- Default:
false
interval
max_speed
time_to_max
wheel_delay
Configures One Shot keys.
oneshot
tap_toggle
- The number of times to tap the key in order to hold it.
timeout
- The amount of time before the key is released in milliseconds.
Configures the PS/2 feature.
ps2
clock_pin
- The GPIO pin connected to
CLK
on the PS/2 device.
- The GPIO pin connected to
data_pin
- The GPIO pin connected to
DATA
on the PS/2 device.
- The GPIO pin connected to
driver
- The PS/2 driver to use. Must be one of
busywait
,interrupt
,usart
,vendor
. - Default:
"busywait"
- The PS/2 driver to use. Must be one of
enabled
- Enable the PS/2 feature.
- Default:
false
mouse_enabled
- Enable the PS/2 mouse handling.
- Default:
false
qmk_lufa_bootloader
esc_input
(Required)- The GPIO pin connected to the designated "exit bootloader" key's row (if
COL2ROW
).
- The GPIO pin connected to the designated "exit bootloader" key's row (if
esc_output
(Required)- The GPIO pin connected to the designated "exit bootloader" key's column (if
COL2ROW
).
- The GPIO pin connected to the designated "exit bootloader" key's column (if
led
- The GPIO pin connected to an LED to flash.
speaker
- The GPIO pin connected to a speaker to click (can also be used for a second LED).
Configures the RGB Lighting feature.
rgblight
led_count
(Required)- The number of LEDs in the chain.
animations
- A dictionary of effects to enable or disable. Effects which are absent default to
false
. - Example:
{ "breathing": true, "rainbow_mood": true, "snake": false }
- A dictionary of effects to enable or disable. Effects which are absent default to
brightness_steps
- The number of brightness adjustment steps.
- Default:
17
default
animation
- The default effect. Must be one of
rgblight.animations
- Default:
"static_light"
- The default effect. Must be one of
on
- The default enabled state.
- Default:
true
hue
- The default hue value.
- Default:
0
sat
- The default saturation value.
- Default:
255
val
- The default brightness level.
- Default:
max_brightness
speed
- The default animation speed.
- Default:
0
driver
- The driver to use. Must be one of
apa102
,custom
,ws2812
. - Default:
"ws2812"
- The driver to use. Must be one of
hue_steps
- The number of hue adjustment steps.
- Default:
8
layers
blink
- Enable layer blinking API.
- Default:
false
enabled
- Enable RGB Lighting Layers.
- Default:
false
max
- The maximum layer count, from 1 to 32.
- Default:
8
led_map
- Remap LED indices.
- Example:
[4, 3, 2, 1, 0]
max_brightness
- The maximum value which the HSV "V" component is scaled to, from 0 to 255.
- Default:
255
rgbw
- Enable RGBW LEDs.
- Default:
false
saturation_steps
- The number of saturation adjustment steps.
- Default:
17
sleep
- Turn off the LEDs when the host goes to sleep.
- Default:
false
split
- Enable synchronization between split halves.
- Default:
false
split_count
- When
rgblight.split
is enabled, the number of LEDs on each half. - Example:
[10, 10]
- When
Configures the RGB Matrix feature.
rgb_matrix
animations
- A dictionary of effects to enable or disable. Effects which are absent default to
false
. - Example:
{ "alphas_mods": true, "breathing": true, "cycle_left_right": false }
- A dictionary of effects to enable or disable. Effects which are absent default to
center_point
- The centroid (geometric center) of the LEDs. Used for certain effects.
- Default:
[112, 32]
default
animation
- The default effect. Must be one of
rgb_matrix.animations
- Default:
"solid_color"
- The default effect. Must be one of
on
- The default enabled state.
- Default:
true
hue
- The default hue value.
- Default:
0
sat
- The default saturation value.
- Default:
255
val
- The default brightness level.
- Default:
max_brightness
speed
- The default animation speed.
- Default:
128
driver
(Required)- The driver to use. Must be one of
aw20216s
,custom
,is31fl3218
,is31fl3731
,is31fl3733
,is31fl3736
,is31fl3737
,is31fl3741
,is31fl3742a
,is31fl3743a
,is31fl3745
,is31fl3746a
,snled27351
,ws2812
.
- The driver to use. Must be one of
hue_steps
- The number of hue adjustment steps.
- Default:
8
layout
(Required)- List of LED configuration dictionaries. Each dictionary contains:
flags
(Required)- A bitfield of flags describing the type of LED.
x
(Required)- The position of the LED in the horizontal axis, from 0 to 224.
y
(Required)- The position of the LED in the vertical axis, from 0 to 64.
matrix
- The key matrix position associated with the LED.
- Example:
[0, 2]
- Example:
{"matrix": [2, 1], "x": 20, "y": 48, "flags": 2}
- List of LED configuration dictionaries. Each dictionary contains:
led_flush_limit
- Limits in milliseconds how frequently an animation will update the LEDs.
- Default:
16
led_process_limit
- Limits the number of LEDs to process in an animation per task run (increases keyboard responsiveness).
- Default:
led_count / 5
max_brightness
- The maximum value which the HSV "V" component is scaled to, from 0 to 255.
- Default:
255
react_on_keyup
- Animations react to keyup instead of keydown.
- Default:
false
sat_steps
- The number of saturation adjustment steps.
- Default:
16
sleep
- Turn off the LEDs when the host goes to sleep.
- Default:
false
speed_steps
- The number of speed adjustment steps.
- Default:
16
split_count
- For split keyboards, the number of LEDs on each half.
- Example:
[16, 16]
timeout
- The LED activity timeout in milliseconds.
- Default:
0
(no timeout)
val_steps
- The number of brightness adjustment steps.
- Default:
16
Configures the Secure feature.
secure
enabled
- Enable the Secure feature.
- Default:
false
idle_timeout
- Timeout while unlocked before returning to the locked state. Set to
0
to disable. - Default:
60000
(1 minute)
- Timeout while unlocked before returning to the locked state. Set to
unlock_sequence
- A list of up to five matrix locations comprising the "unlock sequence".
- Example:
[[0, 0], [0, 1], [4, 3]]
unlock_timeout
- Timeout for the user to perform the unlock sequence. Set to
0
to disable. - Default:
5000
(5 seconds)
- Timeout for the user to perform the unlock sequence. Set to
Configures the Split Keyboard feature.
split
bootmagic
matrix
- See Bootmagic config.
dip_switch
right
pins
- See DIP Switches config.
enabled
- Enable the Split Keyboard feature.
- Default:
false
encoder
right
rotary
- See Encoder config.
handedness
pin
- The GPIO pin connected to determine handedness.
matrix_grid
- The GPIO pins of the matrix position which determines the handedness.
- Example:
["A1", "B5"]
matrix_pins
right
- See Matrix config.
soft_serial_pin
- The GPIO pin to use (
serial
transport protocol only).
- The GPIO pin to use (
soft_serial_speed
- The protocol speed, from
0
to5
(serial
transport protocol only). - Default:
1
- The protocol speed, from
transport
protocol
- The split transport protocol to use. Must be one of
custom
,i2c
,serial
,serial_usart
.
- The split transport protocol to use. Must be one of
sync
activity
- Mirror the activity timestamps to the secondary half.
- Default:
false
detected_os
- Mirror the detected OS to the secondary half.
- Default:
false
haptic
- Mirror the haptic state and process haptic feedback to the secondary half.
- Default:
false
layer_state
- Mirror the layer state to the secondary half.
- Default:
false
indicators
- Mirror the indicator state to the secondary half.
- Default:
false
matrix_state
- Mirror the main/primary half's matrix state to the secondary half.
- Default:
false
modifiers
- Mirror the modifier state to the secondary half.
- Default:
false
oled
- Mirror the OLED on/off status to the secondary half.
- Default:
false
st7565
- Mirror the ST7565 on/off status to the secondary half.
- Default:
false
wpm
- Mirror the current WPM value to the secondary half.
- Default:
false
watchdog
- Reboot the secondary half if it loses connection.
- Default:
false
watchdog_timeout
- The amount of time to wait for communication from the primary half in milliseconds.
usb_detect
enabled
- Detect USB connection when determining split half roles.
polling_interval
- The polling frequency in milliseconds.
- Default:
10
(10 ms)
timeout
- The amount of time to wait for a USB connection in milliseconds.
- Default:
2000
(2 seconds)
Configures the Stenography feature.
stenography
enabled
- Enable the Stenography feature.
- Default:
false
protocol
- The Steno protocol to use. Must be one of
all
,geminipr
,txbolt
. - Default:
"all"
- The Steno protocol to use. Must be one of
usb
device_version
(Required)- A BCD version number in the format
MM.m.r
(up to99.9.9
). - Example:
"1.0.0"
- A BCD version number in the format
pid
(Required)- The USB product ID as a four-digit hexadecimal number.
- Example:
"0x23B0"
vid
(Required)- The USB vendor ID as a four-digit hexadecimal number.
- Example:
"0xC1ED"
force_nkro
- Force NKRO to be active.
- Default:
false
max_power
- The maximum current draw the host should expect from the device. This does not control the actual current usage.
- Default:
500
(500 mA)
no_startup_check
- Disable USB suspend check after keyboard startup.
- Default:
false
polling_interval
- The frequency at which the host should poll the keyboard for reports.
- Default:
1
(1 ms/1000 Hz)
shared_endpoint
keyboard
- Send keyboard reports through the "shared" USB endpoint.
- Default:
false
mouse
- Send mouse reports through the "shared" USB endpoint.
- Default:
true
suspend_wakeup_delay
- The amount of time to wait after sending a wakeup packet, in milliseconds.
- Default:
0
(disabled)
wait_for
- Force the keyboard to wait for USB enumeration before starting up.
- Default:
false
Configures the WS2812 driver.
ws2812
driver
- The driver to use. Must be one of
bitbang
,custom
,i2c
,pwm
,spi
,vendor
. - Default:
"bitbang"
- The driver to use. Must be one of
pin
(Required)- The GPIO pin connected to
DI
on the first LED in the chain (bitbang
,pwm
,spi
andvendor
drivers only).
- The GPIO pin connected to
i2c_address
- The I²C address of the WS2812 controller (
i2c
driver only). - Default:
"0xB0"
- The I²C address of the WS2812 controller (
i2c_timeout
- The I²C timeout in milliseconds (
i2c
driver only). - Default:
100
(100 ms)
- The I²C timeout in milliseconds (