MD-LAMBDA-VIEW
The tiny data logger for lambda, RPM and throttle position
Do you drive a car or motorcycle and want to perfectly tune your vehicle? Whether you want to optimize your carburetor or your fuel injection system (EFI), a precise lambda display is essential. However, many drivers don't want to mount large, bulky instruments on their handlebars or dashboard. MD-Lambda-View is the compact solution: a universal lambda data logger in a miniature format that can be discreetly hidden in any car or motorcycle. MD-Lambda-View is designed to read a Bosch LSU 4.9 wideband oxygen sensor and display the current lambda value permanently, color-coded, clearly visible, dimmable, and without any distracting displays using a 5 mm RGB LED.
For detailed analysis, MD-Lambda-View connects directly to your smartphone or the separately available MD-Pico display. You receive real-time data via the integrated Wi-Fi web interface:
Lambda value
Speed (RPM)
Throttle valve position or carburetor slide position
On-board voltage
All values are automatically logged, saved as a table, and can later be used with Excel, Google Sheets, or the company's own software.
MD-Lambda-View 3D Surface Visualization can be evaluated. This gives you the perfect combination of discreet live lambda display, professional data logging and mobile evaluation, ideal for carburetor tuning, EFI tuning, diagnostics or racing.
For detailed analysis, MD-Lambda-View connects directly to your smartphone or the separately available MD-Pico display. You receive real-time data via the integrated Wi-Fi web interface:
Lambda value
Speed (RPM)
Throttle valve position or carburetor slide position
On-board voltage
All values are automatically logged, saved as a table, and can later be analyzed using Excel, Google Sheets, or the proprietary MD-Lambda-View 3D surface visualization. This gives you the perfect combination of discreet live lambda display, professional data logging, and mobile analysis – ideal for carburetor tuning, EFI tuning, diagnostics, or racing.
MD-LAMBDA-VIEW IS REALLY SMALL
The MD-Lambda-View system is intentionally compact and discreet, allowing for easy integration into any vehicle. The device features a robust plastic housing with the following dimensions:
65mm × 36mm × 18mm (L × W × H)
Plastic housing with lid
Connection cable for connecting to lambda sensor, power supply and external sensors (not shown)
Due to its small size, MD-Lambda-View can easily be installed in motorcycles, cars, classic cars or custom conversions, even in very tight installation locations.
Technical Data
Power supply:
9V -15V
Power consumption:
0.8A - 4A (depending on the heating current of the lambda sensor)
Connection protocol:
WIFI, password 8 characters
Entrances:
Engine speed, throttle position, lambda sensor
Outputs:
RGB LED
Operation and settings
Web server
Dimensions:
70mm x 36mm x 18mm
Lambda sensor controller based on
SLCFree by 14point7
Software unter GPL V3 license
How does MD-LAMBDA-VIEW work?
Block diagram
MD-Lambda-View is an electronic module. It consists of a controller for operating a Bosch LSU 4.9 wideband oxygen sensor and a second controller for processing the lambda signal, measuring the throttle position (or carburetor slide position), engine speed, and vehicle voltage. The second controller also provides the Wi-Fi access point and the user interface as a web page. By using a web page, MD-Lambda-View is platform-independent and can be accessed with any Wi-Fi-enabled device. The Wi-Fi network is password-protected. An initial password is provided, which the user can change at any time.
MD-Lambda-View continuously writes all four measured values (lambda value, engine speed, throttle position, and battery voltage) to a table. The table is updated when MD-Lambda-View is restarted. Further information on logging behavior and file management can be found in the user manual in the download area.
The table can be exported in CSV format and further processed with data analysis software or with all common spreadsheet programs.
Connection of lambda sensor and carburetor
You need a power supply from terminal 15 (switched +12V) and a ground connection. This will get MD-Lambda-View up and running. To obtain information about the mixture composition, you need a Bosch LSU 4.9 broadband sensor and a suitable weld-in sleeve, which must be welded into your vehicle's manifold if one isn't already present.
I do not intend to offer lambda sensors and weld-in sleeves in my online shop, as these can be obtained cheaply on relevant websites.
Instructions for installing the lambda sensor and the sensor's technical data can be found in the data sheet on Bosch's website.
Lambda_Sensor_LSU_4.9_Datasheet
To determine the engine speed, MD-Lambda-View is connected to terminal 1 of your vehicle's ignition coil. This works for all conventional breaker and transistor ignition systems. For CDI ignition systems, the engine speed signal is picked up via an adapter on the ignition cable. A suitable adapter can be ordered from motogadget Berlin, among others. Ignition signal pickup | motogadget GmbH .
The throttle valve or carburetor slide position is determined using a potentiometer, a conventional throttle position sensor, or the specially developed cable adapter. MD-Lambda-View provides three connection cables for this purpose as part of a separately available wiring harness. Red = 5V, black = ground, and blue = measured value. For a conventional potentiometer, this means that red and black must be connected to the ends of the wiper track, and blue to the wiper itself.
