Archive for the 'Electronics' Category

SMD Soldering on the cheap

Like a lot of hobbits, I don’t really like to solder SMD. It’s hard to solder with a normal soldering iron (even this can be done), and hot air soldering station cost a little. (around 180 Euros shipping included)
I already talk to my friend Bernt about this. He says he already used a cheap gas […]

admin July 9th, 2008

Howto repair a broken USB flash drive

This is not the first time, I break a USB Drive. And I already heard some people complaining about the same stuff. But how is this possible ? Even if I use it a lot, memory and micro-controller are robust you know, no special reason for a failure (except of course some anormal write, but […]

admin April 30th, 2008

Lumex Graphic LCD 128×64 (S12864GSF) + AVR (Atmega32)

I recently bought 2 LCD from jckrers ebay store. I have a good idea for this stuff, but first I need to run several tests. This LCD are fine and use the common KS108 controller.
My first thought was to use the avrlib, so I wired the LCD and started to use avrlib, but I quickly […]

admin March 24th, 2008

Lot of DIY stuffs to do, so litte time, and waiting for holidays

Ok, my english exam is over .. waiting for the final result
I had a lot of stuffs on the way right now, so I hope to have the time to finish them before going on holidays here a little list:

A subwoofer (with a big 12″ woofer that goes damn low !
A subwoofer amp, this is […]

admin July 11th, 2007

Howto recover wrong fuses settings on a AVR

Yesterday, I ran into a issue with an ATMega32. In fact, I wanted to disable the Jtag support on the chips because I need to use the pins used by the Jtag (PC2-PC5). To disable the Jtag, you simply need to change some fuses. I changed the fuses with the help of the Avr Fuse […]

admin April 15th, 2007

Howto hack USB port on a LG LAC-M6500R MP3 Player (CD/Radio/MP3 Player)

Some friends buy me a nice MP3 player for my car last year (birthday): LAC-M6500R
This stuff looks great and you can even plug a hard-drive. The main issue is that the firmware only support 999 files on a single USB device, so that’s enougth for ~4Go of MP3 but not more. So I decided to […]

admin March 4th, 2007

Scope clock / Round 0

Ok, everybody know I’m a clock builder right now ;) .. So beside I have a lot of stuffs to do, I decided to build a new clock.
A good friend, give a old Mullard DH7-11 tube, so it’s time to give it a try no ? ;) The main issue right now, is to find […]

admin February 3rd, 2007

IVL1-7/5 Russian Vacum Tube (VFD) Clock - Part 1

I’m now building another clock with a IVL1-7/5. In fact, I’m preparing a large bench of VFD clock, and I need to test several stuffs, so the schematic isn’t public right now.
This one use quite the same stuff than my previous I IV-18 clock, the main difference is the VFD power supply, but if you […]

admin January 6th, 2007

Anode power supply for VFD display ( 5v to 80v stepper PSU )

For my next project (another VFD clock ;), I need a small variable PSU. The main issue with the VFD display, is the power supply. In fact you need 2 differents PSU:

a 5v / 100mA for the filament
a variable 20 to 75v for anodes..

VFD tube like the IV18 need something like 20/30 volts in direct […]

admin December 26th, 2006

Howto listen mp3 in the bathroom ?

I was looking for a simple way to listen some good music while I’m not in my living room (hum, I’m mean in the bathroom). There is a lot of small MP3 players right now, the only issue is that most of them cost a lot of money if you want to put a great […]

admin November 19th, 2006