Raspberry Pi TFT Display Modules: Wiring, Config and What Actually Works
A Raspberry Pi is a common brain for a prototype or a low-volume instrument, and the display is usually the first thing the builder wires up. The catch is that a TFT panel rarely speaks the Pi natively: a small module wants SPI over the GPIO header, a larger one wants an HDMI bridge, and a few want the DSI port. This page maps each RONEN TFT family to the path that actually works on a Pi, and the configuration that makes it light up. It is written for makers and engineers bringing up a Pi-based display, not for consumer Pi screens.
Three Ways to Drive a TFT from a Pi
Small panels (roughly 2.4 to 3.5 inch) connect over SPI on the 40-pin GPIO header and are driven by a kernel framebuffer or a userspace library; they cost almost no dedicated hardware and leave most of the GPIO available. Mid-size and larger panels (7 to 10.1 inch) use an HDMI bridge board that converts the Pi HDMI output to the panel native LVDS or RGB interface. A smaller number use the DSI port for a direct display connection. Pick the path by panel size and by how much of the GPIO you still need.
HDMI Bridge for 7 to 10.1-inch Panels
For 7 to 10.1 inch LVDS or RGB panels, the cleanest route is an HDMI bridge board between the Pi and the panel, the same converter approach used for industrial PCs and legacy equipment. The Pi sees a standard monitor, so no panel-specific driver is needed; the bridge handles EDID, backlight drive and the native interface. The converter and bridging details are on the <a href="../solutions/hdmi-vga-display">HDMI and VGA display solutions</a> page. Touch, when present, usually bridges over USB from the controller board.
SPI and GPIO for Small 2.4 to 3.5-inch Modules
Small SPI modules talk over the GPIO header and are brought up with a device-tree overlay and a framebuffer configured in config.txt, or driven directly from Python for simple UIs. They are the right choice when the build is small, the UI is light, and the rest of the GPIO must stay available for sensors and control. Expect lower resolution and refresh than an HDMI panel, which is fine for status and instrument screens.
DSI and the 40-pin Header
The dedicated display port on the Pi carries DSI for a direct panel connection on the models that expose it, avoiding both the GPIO bit-banging of SPI and the HDMI bridge of larger panels. Availability and pin-out vary by Pi generation, so confirm the port on your specific board before designing around it; for most builder projects the HDMI bridge or the SPI route is the lower-risk path.
| Path | Panel size | What it needs |
|---|---|---|
| SPI over GPIO | 2.4 - 3.5 inch | Device-tree overlay or userspace driver, framebuffer |
| HDMI bridge | 7 - 10.1 inch | HDMI to LVDS/RGB converter, USB touch bridge |
| DSI port | Board-dependent | DSI-capable Pi, confirmed pin-out |
Driver, Config and Supply Continuity
Whatever the path, keep the panel as a named part number and confirm the bridge or overlay against it, because the configuration is tied to the exact module. For low-volume and prototype runs this matters less; for a product it matters a lot. Our stocked catalogue is maintained with 5+ year continuity on named part numbers, so the same panel can be re-ordered as the build moves from prototype to production, and order quantities are confirmed per project rather than assumed.
Matching RONEN Standard Models
The modules below cover the two common Pi paths: larger LVDS/RGB panels for an HDMI bridge, and small SPI/RGB/MCU panels for direct GPIO. Confirm the interface against your Pi model.
- RG-T070BAHA-19CA — 7.0" 1024x600 IPS, 450 cd/m2, LVDS, capacitive touch
- RG-T070SWHWA-01 — 7.0" 800x480 IPS, 1000 cd/m2, LVDS, no touch, rated -30 C
- RG-T101BAHA-01 — 10.1" 1024x600 IPS, 500 cd/m2, LVDS, no touch
- RG-T101HIEWA-01 — 10.1" 1280x800 IPS, 1000 cd/m2, LVDS, no touch, rated -30 C
- RG-T024BQSA-01 — 2.4" 240x320 IPS, 500 cd/m2, RGB/SPI/MCU, no touch
- RG-T028BQSA-01 — 2.8" 240x320 IPS, 500 cd/m2, RGB/SPI/MCU, no touch
- RG-T035BHSA-01 — 3.5" 320x480 IPS, 320 cd/m2, RGB/SPI/MCU, no touch
- RG-T035QHI-03CP — 3.5" 320x480 IPS, 300 cd/m2, RGB/SPI/MCU, capacitive touch
Frequently asked questions
How do I connect a RONEN TFT to a Raspberry Pi?
By panel size: small 2.4 to 3.5 inch modules use SPI over the GPIO header with a device-tree overlay or userspace driver, while 7 to 10.1 inch LVDS or RGB panels use an HDMI bridge board that the Pi sees as a standard monitor. A few panels use the DSI port where the Pi exposes it.
Can a Raspberry Pi drive a 7-inch or 10-inch TFT directly?
Not directly from the GPIO; those panels use an HDMI bridge that converts the Pi HDMI output to the panel native LVDS or RGB interface and bridges touch over USB. The Pi needs no panel-specific driver for that route.
What do small SPI TFT modules need on a Pi?
A device-tree overlay and a framebuffer set in config.txt, or a userspace library for simple UIs. They use little dedicated hardware and leave most of the GPIO available for sensors and control.
Are these panels kept available for production runs?
Our stocked catalogue is maintained with 5+ year continuity on named part numbers, so the same panel can be re-ordered from prototype into production, with order quantities confirmed per project.