MeshCore-Solo/docs/solo/developer/feature-matrix.md

Feature matrix

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What each kind of screen gets. Solo has two UIs: ui-new (buttons, every board but the L2) and ui-lvgl (touch, the Wio Tracker L2). Within ui-new, some content depends on the screen's size and kind, the rest on the hardware (build flags).

Keep this up to date: a change that adds a feature to only one UI, or only to some screens, adds or corrects its row here in the same commit.

Screen groups

Column	Boards	Logical size, font	Notes
Small	Wio Tracker L1 (OLED), Heltec V3/V4, GAT562 30S and Watch13, ProMicro, Cardputer ADV (TFT), T-Echo Lite (e-ink)	128 × 64, 6 × 9	The T-Echo Lite is e-ink, so it also gets what's marked e-ink
E-ink L	Wio Tracker L1 e-ink, landscape	250 × 122, 8 × 13	Larger icons
E-ink P	Wio Tracker L1 e-ink, portrait	122 × 250, 6 × 9
E-ink 4.2"	Wio Tracker L1 with the 4.2" panel (parked)	400 × 300, 9 × 15	Its own icon set
E-ink 4.26"	Wio Tracker L1 with the 4.26" 800 × 480 panel (WioTrackerL1Eink426_solo_dual)	400 × 240 at 2x, 9 × 15	Text and icon size settings; "wide" like the 4.2", 16 lines
L2	Wio Tracker L2	320 × 240 touch, ui-lvgl

What decides it in ui-new (look for these when adding a screen):

Test	Where it's true
Features::IS_EINK, display.isEink()	E-ink L, E-ink P, E-ink 4.2", T-Echo Lite
expandHistory(): 9 or more lines	E-ink L, E-ink P, E-ink 4.2"
height() >= 18 * lineHeight	E-ink P, E-ink 4.2"
width() >= 40 * charWidth ("wide")	E-ink 4.2"
isLandscape()	Small, E-ink L, E-ink 4.2"

Cells: yes, — (not there), a short note where it differs, or the build flag it needs.

Messages

Feature	Small	E-ink L	E-ink P	E-ink 4.2"	L2
Channels, direct, rooms	yes	yes	yes	yes	yes, one screen with sections
Opens on the first unread, "New" line	yes	yes	yes	yes	yes
Bubbles	2-line boxes	whole text	whole text	whole text	whole text
History kept	48 ch / 32 DM	same	same	same	256 / 128 in memory, all on SD (HIST_ARCHIVE)
Path of a message	Path list	same	same	same	path diagram on the card
Quick messages, placeholders	yes	yes	yes	yes	yes
Bytes left while typing	yes	yes	yes	yes	yes
Keyboard	letter grid or T9	same	same, taller keys	same, taller keys	phone-style touch
Cursor mode	yes	yes	yes	yes	— (touch places the cursor)
Accents	Hold Enter on the letter	same	same	same	hold the key
Message alert setting (banner / corner / off)	yes, no blink on e-ink	yes, no blink	yes, no blink	yes, no blink	banner on / off, tap to open

Contacts and home

Feature	Small	E-ink L	E-ink P	E-ink 4.2"	L2
Home	pages, Left / Right	same	same	same	swiped pages, apps six to a page
Favourites	6 slots, 3 columns	3 columns	2 columns	3 columns	favourite chats page
Quick panel	per-page quick rows	same	same	same	pull-down panel
Nearby nodes	list	list, direction arrows	list, direction arrows	list + detail pane	Nodes app
Map of nodes	yes (Nearby › Map)	yes	yes	yes	yes, on the tile map
Contact details	yes	+ compass rose, path hops	+ compass rose, path hops	+ compass rose, path hops	card with actions
Contact expiry / prune	yes	yes	yes	yes	yes
Remote admin	yes	yes	yes	yes	yes
Adding contacts (auto-add by type, hops, replace oldest)	Settings › Contacts	same	same	same	Messages & contacts
Privacy (position in adverts, telemetry requests)	Settings › Privacy	same	same	same	Settings › Privacy
Per-contact actions (telemetry permissions, reset path, share nearby)	Nodes › options	same	same	same	Node card
Fixed position, Bluetooth PIN	Settings › Privacy	same	same	same	Settings › Privacy
Factory reset	Settings › System	same	same	same	Settings, at the bottom
Console (companion CLI, upstream commands plus settings keys)	app / USB tools	same	same	same	same

Navigation (ENV_INCLUDE_GPS)

Feature	Small	E-ink L	E-ink P	E-ink 4.2"	L2
Trail	512 points, simplified	same	same	same	32 768 points, copy on SD
Saved trail view	yes	yes	+ map and elevation profile	+ map and elevation profile	on the map, profile view
GPX	over USB (USB tools)	same	same	same	to trails/ on SD
Waypoints, averaging	yes	yes	yes	yes	yes, 64
Target, navigation view	yes	yes	yes	wide layout	on the map + Compass app
Live sharing, locator	yes	yes	yes	yes	yes
Map	position, trail, target	same	same	same	offline tiles on SD, download over WiFi

Tools and status

Feature	Small	E-ink L	E-ink P	E-ink 4.2"	L2
Clock tools (alarm, timer, stopwatch)	yes, tenths on the stopwatch	no tenths	no tenths	wide layout	Clock app
Calendar	Clock tools (tight grid)	Clock tools (tight grid)	+ under the clock, on the lock screen	+ under the clock	in the Clock app
Remote bot, repeater, auto-advert	yes	yes	yes	yes	yes
Melodies (PIN_BUZZER)	Ringtones tool	same	same	wide editor	Settings › Sound
Status: Radio, GPS, Power, Mesh	yes, 32 min history	yes, 8 h charts	yes, 8 h charts	tiles with charts	Diagnostics app (+ noise chart)
Sky view (GPS_SKYVIEW)	Status › Sky	same	same	+ side panel	GPS app: Sky, Signal, Details
Advanced radio (hash size, double ACK, CAD, interference, RX boost, RX delay, airtime)	end of Settings › Radio	same	same	same	Radio › Advanced
Battery curve	Settings	same	same	same	Settings › Power, draggable chart
QR code of the manual	Status › System, Enter	same	same	same	Settings › About
QR code of your contact	Status › System, Enter	same	same	same	Settings › About

Device

Feature	Small	E-ink L	E-ink P	E-ink 4.2"	L2
Screen lock, PIN	yes	yes	yes	yes	yes, slide to unlock
Magnetic cover (PIN_HALL_SENSOR)	yes	yes	yes	yes	—
Brightness	yes (OLED, TFT)	—	—	—	yes
Rotation, joystick rotation, full refresh	—	yes	yes	yes	—
Power off	Shutdown page (hibernate)	same	same	same	Settings › System
Firmware update	over USB	same	same	same	over WiFi from GitHub
Screenshot (ENABLE_SCREENSHOT)	over USB	same	same	same	side + top button to SD, or over USB
SD card, USB drive	—	—	—	—	yes

Hardware add-ons (ui-new only)

Feature	Flag	Boards
CardKB	CARDKB_I2C or ENV_PIN_SDA / ENV_PIN_SCL	any ui-new board with free I2C
GPIO tool, !gpio	PIN_GPIO1..PIN_GPIO4	any ui-new board with free pins
Wired joystick	UI_HAS_JOYSTICK	Heltec V3/V4 (and any board wired for it)
Vibration	PIN_VIBRATION	GAT562 Watch13

Gaps

Things one side has that the other could:

• L2 → ui-new: history on an SD card (no card on the L1); a base map under the trail and the nodes (no card either, but the L1 has 2 MB of QSPI flash: a lite vector pack is being measured).
• ui-new → L2: T9 layout; CardKB; GPIO on the Grove port; the magnetic cover (no sensor).
• Small screens: the e-ink charts (RAM: 8 h of history).