Finally, it was time to go for a test ride. You can view and log data over Bluetooth with a phone using the MSdroid Android app. Going out for a ride, everything seemed good until the RPM gauge spiked to 10k and then back down. Uh oh — this is what the Atmega does when …
Continue reading ‘Microsquirting the NC30, part #9: Some debugging’ »
I was feeling pretty good about how things were going when I “just” had hooking up the tachometer left. That’s when I ran into an unsolved problem. From looking at the tachometer signal with the oscilloscope, I had determined that it consisted of short, square pulses, 4 per engine revolution. The Microsquirt outputs a tachometer …
Continue reading ‘Microsquirting the NC30, part #8: The tachometer’ »
Since the last post, the oxygen sensors are functional! While I had tested the controller boards when I initially built them, they’ve been sitting around since then. Now it was time to pack them into the box. It was quite fiddly getting all the wires in place, but eventually it all got stacked up and …
Continue reading ‘Microsquirting the NC30, part #7: Reading lambda’ »
All that remained before we’d have the Microsquirt alive when the last post ended was to plug everything into the connector… only there was a small setback. The minimal test was to only wire up the power and the serial lines and make sure that we could talk to it over the Bluetooth modem. Except …
Continue reading ‘Microsquirting the NC30, part #6: It’s alive!’ »
With the fusebox mostly wired up, it was time to deal with the other wires. While I’m trying to “repurpose” wires in the stock harness when possible, that mostly helps when connecting up existing things like the lights. For the new sensors, I needed to pull new wires. First step was to add an intake …
Continue reading ‘Microsquirting the NC30, part #5: More wiring’ »
With the oxygen sensors mounted and the wideband controller box finished, I could finally start doing the wiring. While this seems like a simple task, I had a hard time deciding how to do it. The big question in my mind was how to wire the power buss part of the fusebox. This requires connecting the …
Continue reading ‘Microsquirting the NC30, part #4: Wiring up the fusebox’ »
In the last post, I described the electronics used to talk to the wideband oxygen sensor controllers. What remained to do was to physically mount the sensors themselves in the exhaust pipes. The sensors themselves are quite large, so I struggled a bit with finding a good place to mount them on the famously cramped NC30. …
Continue reading ‘Microsquirting the NC30, part #3: Mounting the Oxygen sensors’ »
As described in the first post in this series, I’m working on converting the NC30 to fuel injection. That post was 2 months ago, since then I’ve mostly been working on a box of electronics that aren’t exactly required but that I think will make things a lot better. When designing the whole Microsquirt system, …
While working on the fairing, I’ve also been planning a much more invasive project: Converting the NC30 to fuel injection! This one may deserve some explanation. I mean, what’s wrong with it as it is? Nothing, really. This is strictly done in the interest of education… What semi-rational explanation I have is that one of …
Continue reading ‘Microsquirting the NC30 (part 1 of many…)’ »
A short update on the fairing job: In the last post, I had just done the layup for the new hole. After the epoxy cured, I cracked the Bondo off and broke the aluminum pipe loose from the epoxy without too much difficulty. Not bad. As I suspected, there were a couple of air bubbles …