25 Apr 2017
Still completely unrelated to boats, but I needed somewhere to put this. Here is a
blow-by-blow guide to installing a minimal Ubuntu 16.10 to a ZFS
root, booted from EFI, which as used as a LXC host to act as an Apple "Time Machine"
14 Mar 2017
A completely generic script that will proxy serial devices over HTTP,
turning USB-things into internet-things.
28 Jul 2015
I think this is the simplest possible way to extend a wireless network if you have
a wired network
to build on.
31 Jan 2015
The ATmega32U4 chip (which underlies the Teensy 2.0, the Arduino Leonardo
and Arduino Micro) has a USB serial port and a single hardware USART. If you want
to use any one of the 40-odd other pins for serial communications, you have two
choices: First, SoftwareSerial, which allows any port to be used but
uses the delay method to control timing - essentially your CPU i...
03 Jan 2014
Experiments with the Atmel AVR ATTiny841
26 Sep 2013
A quick perl script to dump the state of the GPIO pins on a Beaglebone Black.
27 Aug 2013
A circuit to integrate LittleBits with your computer via USB
16 Aug 2013
Some quick notes to document how I turned a Raspberry Pi into a wireless router with
a wired network,
bluetooth-tethered iPhone or Huawei E3131 dongle providing the gateway.
15 Apr 2013
Hand-soldering SMD boards A quick note on how I'm doing this. SMT parts are
pretty daunting to solder although there are plenty of people on the net that will
tell you it's way easier than through-hole. After a dozen or so of these I think
the truth is somewhere in between. The image on the right has rollovers showing
my setup - I made quite a few false starts but now I'm getting pre...
25 May 2012
I have a Teensy 2.0 and some ATtiny45 and ATtiny85 chips from Atmel, which
I want to program with a minimum of fuss and parts. For me this means using the Teensy
as an "In System Programmer" or ISP, and there are plenty of other articles on how
to do this. But I thought I'd file what I've got here for reference anyway. It's
very easy - no hardware required except a Teensy, the ATTiny...
06 May 2012
This is my TV. I hate cables, so when I was planning this I routed all the cables
I'd ever need behind the wall. HDMI, TV Aerial, speaker, ethernet, and a power socket.
I forgot to route USB. If I want to use an Atmolight this is
a problem. Lights behind the TV that change color require a cable to the computer.
They also require a power supply and, apparently, quite an ex...
31 Jan 2012
Notes on integrating a BTM400-6B Bluetooth module from ebay, with a Teensy 2.0.
The bluetooth module is currently USD$7. Here's what I did: Soldered
the Bluetooth module to the breakout board supplied by the vendor. This breaks out
GND, 5V, Tx, Rx, PIO8/State (wired to a status led on the board) and PIO11/Key - when
this is high the board is in "command mode", when it's low it...