Wideband lambda gauges and controllers for LSU 4.9

Wideband lambda gauges and controllers for Bosch LSU 4.9 sensors, for engine tuning and test benches. The Pro works on its own, with its own display and app. The module and the shield are made to be added to your own Arduino project.

Plug and play

No Arduino needed Its own microcontroller runs the display and Bluetooth

Recommended

Pro Lambda 01D21V00

From €128 €99

Logs the history and shows it as graphs on your phone. You can also read it on its own screen.

MeasuresO2-Lambda-AFR · RPM · EGT- up to 1000 °C

Plug and play App Android/iOS/macOS Datalogger CSV Graphs Display Works without Arduino Arduino (optional)

View the Pro

For Arduino

Arduino required They do not work on their own

Recommended

Lambda Module 01M11V00

From €000 €75

Add it to your project. Ask it, and it gives you the reading.

MeasuresO2-Lambda-AFR

Requires Arduino 5 lines of code You do not need to know how it works Low resource use SPI bus · 4 pins Library Lambda.h

View the module

Out of stock

Lambda Shield 01S00V00

From €000 €53.30

Learn to use the chip. You write the code.

MeasuresO2-Lambda-AFR

Requires Arduino Direct access to the chip CJ 125 High resource use

View the shield

Want a display, an app and data logging as well? The Pro Lambda 01D21V00 connects to Arduino too →

Which wideband lambda controller do you need?

If you want a reading without writing any code, choose the Pro. It powers the sensor, shows lambda and AFR on its own display, records the session and shows the history as graphs in the app. It does not need an Arduino — but it can send the data to one if you want to use it inside your own project.

If you want a reading without writing any code, choose the Pro. It powers the sensor, shows lambda and AFR on its own display, records the session and shows the history as graphs in the app. It does not need an Arduino — but it can send the data to one if you want to use it inside your own project. If you are building that project yourself, the module does the hard part for you: five lines of code and it returns the reading, over the SPI bus and using very little of your board. The library and working examples are included.

The shield also comes with a library and examples, but here they are a starting point, not a shortcut. It gives you direct access to the CJ125 chip and you write the control loop yourself. It is the slowest route to a reading and the fastest route to understanding how a wideband lambda controller really works.