ultra-low-cost and mini-sized ECU for speeduino firmware (Rev0.1.9 45 x 58 mm)
Integrated Wideband Lambda Controller with Bosch CJ125 and LSU 4.9
4-Layer highly integrated design - hand soldering possible but only recommended to people with really experienced soldering skills. Hardware is optimized for assembly by professional assembly manufacturer
supports 4 cylinder full sequential
4 high impedance injectors
4 active ignition coils
1 crankshaft sensor with MAX9926 VR-conditioner (optional Hall Input without MAX9926)
1 hall input for camshaft sensor
6 analog inputs: CLT, IAT, TPS, BAT, LMM, MAP
1 optional baro sensor MPXH6400A on connector side of pcb
1 digital input for disco swaggering (aka. launch control)
Onboard Wideband Lambda Controller with Bosch CJ125 (LSU 4.9)
1 fuel pump out
1 idle valve out
1 tacho out (5/12V)
1 boost out (optional with IGN_D out)
1 fan out
USB programming interface with CP2102
optional Bluetooth module
16.09.2020: Betaversion 0.0.6 has gone into production - More infos coming soon....
30.09.2020: First initial tests of V0.0.6 have been made. Further tests still have to be done. Until now there was no significant or uncorrectable error in V0.0.6. Some minor improvements will lead to next version V0.0.7
01.01.2021: Happy new year - Version 0.0.8 has been released
20.05.2021: Betaversion 0.0.9 has been released
26.05.2021: Betaversion 0.1.0 has been released
26.08.2021: Betaversion 0.1.1 has been released
07.12.2021: Betaversion 0.1.2 has been released
25.04.2022: Betaversion 0.1.2 is running on a real car after two corrections which can be done manually. See correction proposals on issues tab here in GitHub.
Next and hopefully final version will follow up soon.
06.05.2022: Final version is getting closer. Also added some information how to wire the connector (interactive page): http://www.oelprinz.org/products/BlitzboxBL49sp/documentation/V0.1.4_and_newer/wiki/pinout_V0.1.4_and_newer_Connector_top_side.html
More information/documentation coming soon
26.08.2022: release candidate 1 (0.1.3) has been published
10.11.2022: V0.1.3 became first official released version
13.02.2023: V0.1.4 minor updates on smd footprints
13.03.2023: V0.1.5 minor updates
22.03.2023: V0.1.6 minor updates on power supply - release candidate for final version
06.04.2023: V0.1.7 added more ground planes - release candidate for final version
19.04.2023: V0.1.8 added optional Bluetooth module - release candidate for final version
19.04.2023: V0.1.9 added solder pad for +5V on VR2- (12V Hall Input for CAM) - release candidate for final version
04.03.2024: V0.1.9 released as current stable version
Link to the original speeduino project
Quick link to Rev0.1.9 schematic: https://github.com/oelprinz-org/BlitzboxBL49sp/blob/master/hardware/Rev0.1.9/schematics_blitzbox_v0.1.9.pdf
Quick link to Rev0.1.9 iBOM: http://oelprinz.org/products/BlitzboxBL49sp/hardware/V0.1.9/iBOM/ibom.html
| Bosch part number |
|---|
| 30615 |
| 40103 |
| 30522 |
Basically, the Bosch probes whose numbers start with 0 258 017 will fit, also Bosch 0 281 004.
Bosch numbers beginning with 0 258 007 are LSU 4.2 probes and will not fit.
| Bosch number | Length overall | Comment |
|---|---|---|
| 0 258 017 012 | 1060mm | |
| 0 258 017 025 | 1000mm | Bosch motorsport part |
| 0 281 004 028 | 540mm | common probe for diesel engines |
| 0 258 017 029 | 620mm | grey, used by BMW after 09/2006 (1178 7539124) |
| 0 258 017 038 | 340mm | grey, used by BMW (11787537984) |
| 0 258 017 092 | 950mm | black, used by BMW (1178 7540167) |
| 0 258 017 126 | 680mm | black, used by BMW after 09/2006 (1178 7561410) |
| 0 281 004 150 | 1215mm | |
| 0 281 004 184 | 1000mm | |
| ... |
| Pin# | Color | Description | Symbol |
|---|---|---|---|
| 1 | red | Pump current APE | IP |
| 2 | yellow | Virtual ground IPN | VM |
| 3 | white | Heater voltage H- | Uh- |
| 4 | grey | Heater voltaget H+ | Uh+ |
| 5 | green | Trim Resistor RT | IA |
| 6 | black | Nernst voltage UN | RE |
