Adafruit
Adafruit TSC2007 I2C Resistive Touch Screen Controller
The Adafruit TSC2007 is an I2C resistive touch screen controller that offloads touch reading from your microcontroller. Instead of using multiple analog pins...
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The Adafruit TSC2007 is an I2C resistive touch screen controller that offloads touch reading from your microcontroller. Instead of using multiple analog pins and constant polling, the TSC2007 handles all the touch sensing over a simple I2C connection and provides an interrupt pin that signals when a touch is detected.
The breakout board includes a 3V voltage regulator and level shifting for compatibility with both 3.3V and 5V logic. An onboard 1mm pitch FPC connector accepts the flex cable from most medium and large resistive touch panels directly. For other touch screens, the four X/Y contacts are broken out on 0.1" pitch pads for hand soldering or wiring.
Key Features
- I2C Touch Controller – Reads X, Y, and Z (pressure) coordinates over I2C, no analog pins required
- Interrupt Pin (IRQ) – Drops low on touch detection to reduce I2C polling; includes a red LED indicator for debugging
- 1mm Pitch FPC Connector – Plug in most 4-wire resistive touch panel flex cables directly
- 0.1" Breakout Pads – Four X/Y contacts for touch panels with non-standard connectors
- 3.3V and 5V Compatible – Onboard voltage regulator and level shifting
- Fast and Precise – Stable readings with less latency than direct analog reading on an Arduino
Ideal For
- Adding touch input to TFT and LCD display projects
- Microcontrollers without analog inputs
- Projects needing interrupt-driven touch detection
- Upgrading from direct analog touch reading for better performance
Package Contents
- 1× Adafruit TSC2007 I2C Resistive Touch Screen Controller Breakout
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- breakout
- A breakout board carries a small or fine-pitched component and brings its connections out to standard, breadboard- and header-friendly pins. Describing a part as a breakout means it can be wired into a project without soldering directly to the component's tiny contacts.
- FPC
- FPC stands for flexible printed circuit, a thin flat flexible cable or connector style often used where space is tight or some movement is needed, commonly for displays, cameras and other high-density connections. Connecting to an FPC connector generally needs a matching cable with the correct pin count, pitch and contact orientation.
- I2C
- I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
- IRQ
- IRQ (interrupt request) is a signal line a device uses to alert a microcontroller that something needs attention, so the microcontroller does not have to poll continuously. Wiring an IRQ pin to a free input lets code respond promptly to events such as new data being ready.
- LCD
- LCD stands for liquid crystal display, a screen technology that uses a backlight and liquid crystals to show images or text. It matters because LCD modules usually need a display driver and enough controller pins or a bus interface to send image data.
- LED
- A light-emitting diode (LED) is a small electronic component that emits light when current flows through it in the correct direction. Because it only conducts one way, its polarity matters, and a through-hole LED must be soldered the correct way around to light up.
- microcontroller
- A microcontroller is a small computer on a single chip that runs a stored program and controls connected inputs and outputs such as buttons, sensors, displays and communication interfaces. In a device built around one, it is the part that executes the code and coordinates the device's behaviour.
- TFT
- A thin-film transistor display is a common type of colour LCD used for graphics screens. Knowing a product is for TFTs helps you check that the driver board matches the display’s connector, resolution, backlight, and signalling method.
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