BL49
Wideband Lambda Controller with Bosch CJ125 and LSU 4.9 with 0-5V output and CAN-Bus Interface
Feature list
- CAN output, compatible with AEM X-Series UEGO
- analog output for lambda 0.65 to 1.3 (0.25v to 4.8V)
- debug messages over CAN (pid, heater status, diag registers, ...)
- activatable via TTL input
- fast: 10ms refresh rate (reading the probe, calculation lambda and O2, sending CAN message and setting analog output)
- Bosch recommended heating strategy
19.09.2022 - Current status of firmware development
- analog output for lambda 0.65 to 1.3 (0.25v to 4.8V): done
- CAN output (AEM X-Series UEGO protocol): done
- debug messages over CAN: done
- Bosch recommended heating strategy: done
- PID controller for heating the probe: done
29.04.2020 - Version 0.0.1 - only hardware released / no software available at the moment
Interactive BOM for easier hand-soldering you can download from the github (BL49/hardware/V0.0.1/bom)
or access online here: https://oelprinz.000webhostapp.com/BL49/V0.0.1/iBOM/ibom.html
Quick link to schematic: https://github.com/oelprinz-org/BL49/blob/master/hardware/V0.0.1/schematics.pdf
Bosch CJ125 (LQFP32 package) part numbers
| Bosch part number |
|---|
| 30615 |
| 40103 |
| 30522 |
Hardware
AEM X-Series CAN layout
Assembled Prototype
Layout
