I2C Test Device I²C Scan, Power, Read/Write

All-in-one I2C tester with 3.3V/5V or external power, scan, ACK/NACK check, register read/write, diagnostics, recovery and live read.

Product Description

The I2C Test Device is a compact standalone tool for developing, testing and troubleshooting I2C hardware without needing a PC. It combines target power control, bus diagnostics, device scanning and register access in one handheld unit with an OLED display and rotary encoder interface.

It is designed for makers, embedded developers, repair work, prototyping and lab use whenever quick I2C validation is needed directly on the bench.

Main features:

Switchable target output: OFF / 3.3V / 5V
Built-in voltage measurement of the connected target
Protection against external voltage conflicts
Overvoltage detection
Short-circuit detection with automatic output shutdown
I2C scan with pull-ups ON or OFF
Single scan or auto scan mode
Device list for detected I2C addresses
Manual device address entry for devices not currently found by scan
ACK/NACK address check
Register read function
Register write function
Read modes for burst read and single-register stepping
One-shot read or continuous live read
Bus diagnosis for stuck SDA/SCL detection
9-clock bus recovery
Adjustable I2C clock speed: 10 kHz / 50 kHz / 100 kHz / 400 kHz
Voltage calibration mode
Factory reset
OLED user interface with rotary encoder control
Built-in Pong screensaver for idle mode

What it can do

This tool lets you power an I2C target directly from the tester, scan the bus for active devices, manually select an address, verify whether a device responds, read registers, write registers and continuously monitor changing register values. It can also help diagnose a blocked bus, detect stuck lines and attempt recovery using a 9-clock release sequence.

Because target voltage is monitored continuously, the device can also prevent unsafe conditions such as applying internal power while external voltage is already present.

Typical use cases

Bring-up of new I2C boards
Sensor evaluation
Register inspection during firmware development
Verifying device addresses and bus response
Checking unknown or partially documented I2C modules
Troubleshooting stuck or unstable I2C buses
Bench testing without a computer

User interface

Operation is done entirely from the onboard display and encoder, so the tester is used as a self-contained bench tool.

If you have any questions about the available features or general queries regarding the device, please feel free to contact us at any time.

The package only includes the I2C-Testdevice. A USB-C cable and a power adapter are also required for operation and are not included!

Specs and Docs

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Rates to United States of America

Shipping Rate	Tracked	Ships From	First Item	Additional Items
UPS: UPS Expedited Tracked USA Delivery within 3 to 5 days.	Yes	DE	$54.95	$0.00

$129.95

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