CrowPanel Advance 35

Elecrow CrowPanel Advance 3.5" HMI

Part of Claude Usage Stick. The biggest screen in the lineup — a 3.5" 480×320 IPS HMI panel with capacitive touch and no physical buttons. Pin mapping comes from Elecrow's official LovyanGFX driver and is verified on hardware.

Specs

MCU	ESP32-S3-WROOM-1 N16R8 (dual-core, WiFi, 16 MB flash, 8 MB OPI PSRAM)
Display	3.5" ILI9488 IPS, 480×320, SPI
Touch	GT911 capacitive, I²C (SDA 15, SCL 16)
Battery	External (percentage not shown)
Buttons	None — touch zones, see Controls
USB	CH340K UART bridge (not native USB CDC)
Firmware	Clarity (v1) — target display tier XL (not yet migrated)
PlatformIO env	crowpanel-adv-35
Buy	aliexpress.com

Flash

Easiest: open the web flasher in Chrome, Edge or Firefox, pick this board, and plug it in over USB-C.

From source, with the PlatformIO CLI:

pio run -e crowpanel-adv-35 -t upload     # firmware

Controls — touch zones

There are no physical user buttons, so the two-button UX maps to halves of the touch panel (matching the on-screen "tap left / tap right" legend):

Touch	Acts as	PIN entry	Dashboard
Tap LEFT half	Button A	Cycle the current digit	Cycle brightness
Tap RIGHT half	Button B	Confirm digit	Force refresh

Notes

• No on-boot factory reset — the A+B combo needs two simultaneous inputs and only a single touch point is read. Re-flash to wipe NVS.
• No battery readout — battery percentage isn't shown on the dashboard.
• The dashboard renders into a PSRAM sprite and is pushed in one transfer, so refreshes don't flicker on this slow SPI panel; the PIN/setup screens draw straight to the panel so touch input stays responsive.
• During setup, the WiFi AP password is shown on the device screen.

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CrowPanel Advance 35 · env crowpanel-adv-35 · All boards · Flashing · Setup and daily use · Troubleshooting