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…)’ »
I said I would do a little writeup of the software for the weather station earlier, and I realized that it would actually be good to do a little How-To about using an Xbee to wirelessly upload now software to an Arduino. While I’ll include a bit of explanation along the way, there will be …
Continue reading ‘How-To: Arduino Wireless Bootloading using XBees’ »
In the previous post I talked about making the antenna for the weather station. Now, what’s that antenna connected to? An XBee-only solution? The initial iteration, that I talked about in the first post, was to just hook up analog humidity and temperature sensors to the XBee’s analog inputs. However, I had trouble getting the …
This may be going about it backwards, but the first thing I built for the weatherstation was the antenna for the Xbee radio that would send the data to our server. I had been reading about various antenna designs in connection with the one I built for the ADS-B receiver, and one design was a …
As some of you may remember (yeah, right, who am I kidding) I used the Epoxy hotbox Arduino to read 1-wire temperature probes and make plots of the temperature. In LA, that’s pretty much the only interesting thing to plot, but given that the weather here is, ahem, a bit more variable, I’ve decided to …
I was asked in a comment in the previous post to share the details of the antennas I made, so here we go. The other antenna in the picture is the J-pole tuned for the 2m amateur band at 144-148MHz. I actually started out building one for the VHF aviation band at 115-135 MHz, based …
I was asked in a comment in the previous post to share the details of the antennas I made, so here we go. The Franklin antenna was made as described here, made out of #6 gauge copper wire (which is 4.1mm diameter). However, bending 4mm copper wire in sharp angles isn’t so easy if you …
Continue reading ‘More antenna business: The 1090MHz Franklin’ »
Over the last couple of weeks I’ve played a bit with “software-defined radio”. By happenstance, I came across the website Flightradar24 which is a Swedish startup company that is building a global flight tracking network. Airplanes have transponders that reply to radar interrogation, and in the latest implementation called “ADS-B”, they are doing away with …
The NC30 rewire has been completed. The first post described the alternator/rectifier wiring, what remained was the battery wiring. Since the master fuse and connectors to the alternator and the loads are integral to the starter solenoid and doesn’t lend itself to upgrading, I’d decided to bypass it completely. The new battery wiring goes from …