Choosing and debugging the interface: RGB, SPI, I2C, MCU, LVDS, MIPI DSI, eDP and HDMI, plus touch controllers, EMC, grounding and long-cable signal integrity.
39 articles in this category.
Two environments defeat ordinary capacitive touchscreens: gloved hands, which weaken the signal a finger produces, and water, which creates false touches across the sensor.…
Read the noteDriving a TFT from a microcontroller is a resource problem before it is a coding problem. The MCU must have enough memory for the…
Read the notePCAP (projected capacitive) and resistive are the two dominant touch technologies, and the choice between them shapes the entire user experience. PCAP supports multi-touch…
Read the noteRGB parallel is the direct interface: the host drives pixel data over a wide bus while the panel refreshes from the live stream. It…
Read the noteA custom touch panel is a stack of decisions: sensor type, electrode material, lamination method, controller, and cover. Understanding how a touch panel is…
Read the noteTiming parameters are usually learned by accident, when an image appears shifted or a panel refuses to lock. The parameters themselves are simple: a…
Read the noteSmall displays sit on two very different serial buses. SPI moves pixel data at high speed over four wires; I2C moves modest amounts of…
Read the noteThe touch controller reports coordinates over one of three host interfaces—I2C, USB, or SPI. All three work; the right one depends on your host…
Read the noteHDMI is everywhere in consumer video, and it is increasingly requested for embedded products: kiosks, monitors, and video walls that need a standard, plug-and-play…
Read the noteLVDS and MIPI DSI are the two serial interfaces most industrial display projects choose between, and they differ in ecosystem as much as in…
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