Numato.cc new year's giveaway coming up
Looks like the good folks at Numato are at it again this year, with a very nice giveaway for various electronics kits. Very nice!
1 min read
Blog · page 13 of 16
188 posts since 2009.
Topics
Fixing bash Shellshock vulnerability on Raspberry Pi
The recent bash vulnerability, a.k.a. “Shellshock”, is pretty bad, considering it might actually have been around for a very long time, maybe even dating back to the predecessor of bash. Not good. So what about Raspberry Pi’s? Are they vulnerable? Turns out they are, but there is
2 min read
How to get OS X 10.9 Mavericks and Arduino IDE to play nicely with each other
Apple tried to be smart with OS X Mavericks, developing their own FTDI drivers. Just too bad they don’t seem to work. I have been getting nothing but “avrdude: stk500_recv(): programmer is not responding” errors when trying to upload sketches to various Arduino compatible boards. In the end,
1 min read
Raspberry Pi won't boot - only red power light comes on - SD card corrupt? Not so fast...
After having problems with SD cards failing after a few months in a Raspi that was supposed to be always-on, it was time to look for options. The IPE distribution seemed like a perfect match – it effectively makes the Raspi only use a ramdisk, except possibly during boot. When
2 min read
HP 6632A power supply cleanup and modifications
There is a new tool in the lab: An HP 6632A power supply. It might be a a bit dated, but it has some pretty good and useful specs (0-20 V, 5 A). True, modern supplies are more compact and offer more features in a smaller box, but a
5 min read
ReadyNAS RN312 + 8GB RAM = FAIL
My RN312 has worked flawlessly since the upgrade from the standard 2 GB RAM to 4 GB ditto. I would however like to run some memory intensive applications on the NAS, so an upgrade to 8GB would be nice. Turns out this is not as easy – might not even be
1 min read
Fail of the day #2: SSD drives out of spec
A while back I got an SSD drive with the question whether it could be repaired. At first glance it looked fine. But wait… the PCB is not level. In fact, it is seriously wobbly. What on earth happened to this SSD? Looking closer at the flash ICs, it turns
3 min read
FAIL of the day #1: Repair of NiMH charger
When buying some GP branded NiMH rechargeable batteries about a year ago, a “GP PowerBank Travel” charger (model GPPB03GS) was included as a promotion. It’s a nice little charger that runs both off 220 V and 12 V (for use in car, I presume). It can charge 1-4
4 min read
Using CoffeeScript to create QlikView extensions
I am not a Javascript fan. To be honest, I find it rather abusive. There are probably lots of theoretically sound reasons for designing the Javascript (=JS) syntax the way it is – but that does not make it more readable or easy to learn. I am however a QlikView (=QV)
4 min read
Burning ISOs to USB sticks on Mac / OS X
For some reason i cannot get the easy-to-use tools out there for burning ISOs to work… Command line to the rescue: First, make sure Homebrew is installed. It is strictly not needed for the burning-to-thumb-drive process, but will enable the progress indicators, which are quite
1 min read
Netgear RN312 firmware upgrade 6.0.8 to 6.1.2
Seems Netgear just released firmware version 6.1.2 for those products that support the new UI (I believe UltraNAS and other non-Intel based devices does not get the benefits of the new version 6 and above firmware – or maybe they have reconsidered – not sure). Updating is always a
1 min read
Moving CrashPlan cache and log directories to new locations
As discussed in a previous post, the ReadyNAS might run out of disk space on the 4 GB root partition if you install software other than that provided by NetGear. In my case it was CrashPlan’s cache and log files that were filling up the root partition, with warning
3 min read