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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: In my quest to understand further and update my VEMS config, I had been searching for a USB scope for monitoring triggers and outputs I recently came across a low cost (169 us dollars) USB 2 channel scope with 16 channel logic analyzer. I've hard wired in two ribbon connectors to the VEMS board to pull out the following signals All injector Channels (6 + Boost PWM & VANOS) 6 Coil Outputs Primary Trigger (Hall) Cam Trigger (Hall) Except for the two input triggers, my connections were made at the gate of the FETS. This allows you to use a common ground reference and limits any voltage spikes. (The unit can only handle +/- 20v) For those who have VR triggers, you could simply get the logic value of the wave by picking a point a little deeper in the circuit. Initial tests have been perfect, although they have brought up questions of my current config (which is the point!) My goal is to use the analyzer to get the car running full sequential Here is a picture of the unit - http://hobbylab.us , http://www.hobbylab.us/USBOscilloscope/eBayAd/Images/Device.jpg And my first graph output http://voytilla.com/gallery/albums/userpics/10003/normal_wasted_spark.jpg 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.