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IMPORTANT: enter the case-INsensitive alphabetic (no numbers) code AND WRITE SOME SHORT summary of changes (below) if you are saving changes. (not required for previewing changes). Wiki-spamming is not tolerated, will be removed, so it does NOT even show up in history. Spammers go away now. Visit Preferences to set your user name Summary of change: Vehicle Overview: 1989 BMW e30 with a M50b25 NV out of a 91 BMW 525 specs on VEMS: 1 x Assembled v3.6 controller - 1-wire interface: no - withSDcard: removable - PS2 connection: no - secondary_trigger: HALL Need to convert to VR! - mounting-style: no-screws - MAP connection: 400kPa (5/3mm pneumatic) - LCD connection: no - EGT input: 1 - Flyback: 30V flyback - ignition driver: 8 - Knock input channels: 2 - primary_trigger: EC36/27 VR VEMS was purchased for a later M50 with Hall. This engine has a VR/VR trigger setup. to extend coil life and prevent IGBT's from over heating a cam sync will need to be installed. After following directions on this page: http://www.vems.hu/wiki/index.php?page=GenBoard%2FManual%2FInputTriggerHardWare this is where the project sits. http://i1131.photobucket.com/albums/m548/southwestbimmers/Snapbucket/7A03402C-1-1.jpg http://i1131.photobucket.com/albums/m548/southwestbimmers/Snapbucket/IMG_0013.jpg http://i1131.photobucket.com/albums/m548/southwestbimmers/Snapbucket/33C458C7-1.jpg _________________________________________________________________ Directions to follow: while SJ7 is open, with cam-HALL masking signal unconnected you can measure that R48 (2k7 recommended) pulls up D27 cathode to 3.5V or higher. This is a good verification !◦ after SJ7 is shorted, unfortunately this cannot be measured (except with scope with input pulses applied) • SJ7 solder-blob on the bottom, so LM1815pin12 output is connected to the microcontroller input pin. This blob is on the bottom, under the FETs. • solder the 2nd LM1815 (same orientation as first: pin1 closest to atmega) • wire from EC18pin12 to the 2nd LM1815 input pad (that goes through a 18k resistor to pin3 of the second LM1815)◦ 1k pulldown resistor between VR input signal and GND ◦ this is effectively in parallel with the VR sensor. Scratch the green solderprotect a bit at the GND so an SMD resistor can be soldered • To make it work with the 1k VR-input pulldown resistor, connect LM1815 pin5 to +5V with the SJ4 (3pin jumper): solder the mid-pin to the +5V pin that goes LM1815pin8 • R182=0 resistor (or short) at LM1815pin7. This helps the adaptive hysteresis (quicker charge). Has the same function as R181 >= 100k for the first LM1815 (soldered in factory) but 0 Ohm (short) is more appropriate here.◦ optionally increasing the neighboring 220nF capacitor by adding an additional (solder piggyback) +1uF or +2.2uF might be a good idea _________________________________________________________________ Optional: Add document to category: Wiki formatting: * is Bullet list ** Bullet list subentry ... '''Bold''', ---- is horizontal ruler, <code> preformatted text... </code> See wiki editing HELP for tables and other formatting tips and tricks.