2010/11: Stuff That Happened

So it’s been over a year since I posted about that NERF turret! I’ve not been totally idle since but nothing’s really finished to a high enough standard to blog about. Instead, here’s a post of almost-finished projects, crushed dreams and lost hopes!

July 2010: I built this pretty firefly from some paperclips, LEDs and an ATtiny. It lights up when you hold it, and sleeps the rest of the time. When it lights up, though, it pulses pretty firefly patterns using an 8-bit pseudo-random shift register.

Firefly

August 2010: Jon and I soldered up the first revision of SelWX, which took ages due to some bent pins on the STM32. Sadly we never got around to writing much code for it so while we got it pinging, that’s about it for r1. We’ll probably do an r2 fairly soon with easier hardware and try to get something working.

SelWX r1 Soldered

October 2010: I wanted to make my long coat light up, so I sewed 20 lillypad LEDs into it. It worked, but only very briefly before my power busses broke, and sadly I didn’t get any photos of it in action. I’ve got the parts to redo it for this winter season though =D

January 2011: Jon and I tried to make a small FM radio transmitter, but it didn’t work. We didn’t have much time to investigate why. I also made a nightlight out of epoxy and coloured dyes and LEDs and all that, but sadly don’t have any photos.

FM bug

May 2011: I took apart this NERF gun to try and mod it to be fully electronically automatic, with a micro stepper motor mounted inside the clip and a small solenoid actuating the mechanism. Unfortunately the mounting hardware involved proved really complex, and a surprisingly amount of force was required to actuate, so nothing really came of this (but now I have some steppers, solenoids and drivers in my spare parts…)

Nerf Barricade

June 2011: I made this breakout board for an ADF7012 radio to test out some new telemetry ideas for CU Spaceflight. It’s not working yet, but hopefully soon…

ADF7012 breakout board

Anyway maybe now I’ll do some more hardware stuff and actually blog about it in time!

Automated NERF turret

So, exams are finally over and I’ve had time to get playing with something again. Some friends bought me a NERF Vulcan for my birthday (cheers!) and of course I had to mod it up. The gun itself is now running off a 3-cell lipo pack, which about doubles the rate of fire, and has [...]

Ferret: High Altitude Balloon Tracker

I’m part of CU Spaceflight, and since we have clearance to launch high altitude balloons from a few nearby locations we often do launches for other people. A lot of the time these launches have a radio transmitter on board, so that people around the country can pick up its GPS position and help keep [...]

NIXIE Clock Case!

Hurrah! The laser cut acrylic for my NIXIE tube clock case arrived this morning, and amazingly all the parts fit together nicely. The screw holes even matched up with the PCBs! I’m pretty happy with how this turned out, and I can finally say the nixie clock project is finished. I definitely learned a lot [...]

Starting Robot4 aka Quad1: Prototyping Sensors

As briefly mentioned in my last post, my next project is an autonomous quadcopter. That is, a four-rotored flying robot. After a couple of weeks of waiting around, I’ve got all the parts I’ve ordered so far: a basic aluminium chasis from MikroKopter, four 1040Kv/14A brushless motors, four propellers, some 3000mAh 3S lipo batteries, and [...]

Robot3

I found an old RC car – the kind of thing you get for £5 from Argos – lying in my cupboard, mostly untouched since I got it as a birthday present. Still, it has wheels and motors, what more could you ask for? I proceeded to rip out all its electronics and battery contacts [...]

STM32 Prototyping Boards

I used an STM32 for the first time in Robot2, and soon discovered how cool they were. Each one is packed full of neat peripherals, runs really really fast and can do all sorts of cool stuff that simpler µCs like an ATmega simply can’t pull off. With this in mind, I asked ST for [...]

Nixie Clock

While I don’t consider the clock entirely finished, I think it’s been around for long enough to write up. Everyone has to make a nixie clock at some time, and as I had 12 IN-14 type tubes lying around for quite a while after ordering them from Russia, I decided I should go ahead and [...]

Robot2 – an ARM based colour tracking robot

(YouTube video) I’ve finally got around to writing up this project! What you see above is a small robot with a gooey ARM Cortex-M3 STM32 core, a teensy embedded camera from SparkFun, an OLED and an LCD screen, three LiPo batteries, some modified servos and a one-piece (unibody!) aluminium case. The robot uses the camera [...]

NIXIEs and Accelerometers

It’s been a while since I’ve posted anything, so I’ll drop a quick update. Hopefully by the end of the coming week I’ll have finished on my current great big time-consuming project and will be able to write that up. I’ve been playing with a few things besides that project, though. The first is stress [...]