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Home / Computer Hardware, Monitors & Peripherals / TTP229 16-Channel Capacitive Touch Module - Digital Touch Switch Sensor

Attributes

Brand -
Category Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals
Origin -
Operating Voltage 2.4V ~ 5.5V DC
Interface Protocol I2C / Direct Key Output
Touch Channels 16 Independent Keys
Operating Current < 5mA (Active Mode)
Response Time Max 60ms
Working Temperature -20°C ~ 70°C
PCB Dimensions 45mm x 28mm
Mounting Style Through-hole Pins
LED Indicators 16x Output Status LEDs
Package Contents 1x Module, 1x Pin Header Strip

5 reviews

A

Anonymous

Apr 04, 2026

Rating: 3/5

Works but needs calibration

Had issues with false triggers initially. Had to add grounding properly. Works now but tricky for beginners.

A

Anonymous

Mar 30, 2026

Rating: 5/5

Perfect for Arduino Projects

Works flawlessly with my Arduino Uno. The sensitivity is adjustable via capacitors. Great value for 16 keys.

A

Anonymous

Feb 26, 2026

Rating: 5/5

Reliable Touch Sensing

Replaced old mechanical buttons on a control panel. No wear and tear issues. Very responsive.

A

Anonymous

Feb 12, 2026

Rating: 5/5

Excellent Build Quality

PCB looks clean. Soldering points are well plated. Using it for a home automation keypad.

A

Anonymous

Jan 21, 2026

Rating: 4/5

Good module, slight learning curve

Functionality is solid. Took some time to configure the I2C mode correctly. Documentation online is scattered.

5 FAQ

Q: Do you provide an Arduino library?

A: We do not host libraries directly, but many open-source TTP229 libraries are available on GitHub.

Q: Can I use this behind a 5mm glass panel?

A: Yes, capacitive touch works through non-conductive materials like glass or plastic up to certain thicknesses.

Q: Is there a sleep mode to save power?

A: Yes, the chip has a low-power mode when no touch is detected for a set period.

Q: Does this support 3.3V logic?

A: Yes, the module operates between 2.4V and 5.5V, so 3.3V systems are compatible.

Q: What is the default I2C address?

A: The address depends on the configuration pads. Please refer to the datasheet for setting ADDR pins.

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