sk7ca made up a great portable electronics lab (with /A LOT/ of arduino-stuff) in an old laptop case and a small road case. I am so thrilled about this, that I asked him if I could feature his build on my blog and here it is:
He found some really good use for these old computers that no-one seems to throw away but isn’t using it either. Note the VME-bus connectors used to interface the BB to the plugs – really nice.
In this case is all you would need to have some fun on the road – a ton of chips, a small MM and a bunch of wires!
Didn’t I promise a load of Arduino add-ons? Just a lot of bits of hardware that make prototyping fast and clean – just like you would want it on a portable lab.
More pics right here.
For me this is a definite /want/ – this old laptop on my shelf seems like it could use some modding …..:)
I just couldn’t resist bidding on some ebay deal where a guy sold his cellar of HIFI-electronics.
There was /much/ more than shown here. This are the parts, I probably gonna use in some way.
Some very old (1991) Camcorder, I gotta look into connecting it do the pc to finally get some descent webcam input.
This is some very solid case, it will probably house a synth or a mixer in the future.
Just that, they’ll go into a boom-box.
This one is interesting because i want to get a ham license in the near future. It does not work atm but I’m on it. the amp on top is known as a “Brenner” (afterburner) or “Oma” (grandmother) here in austria. using such an HF-amp with CB is strictly forbidden. (4W only, 12W with SSB)
Yeah this one needs some serious cleaning and testing but it could very well become a good mate in the future.
Like the title says, there is not much to get from an lcd tv: just some connectors, wires and one thing that’s worth something: the LCD backlight.
Just the MLT666A power supply(still have to find out about how to kickstart it) and the backlight is interesting. I will turn the backlight into an overhead lamp for a workbench.
While I was working on my Oscilloscope project I discovered, that breadboards are only semi-useful for Bigger things. Everything seems not to add to your project but to just pile up on it. After you added some probes and things that need a bus you will sit on a fragile, unforgiving crapstack, that just waits for you to stick a jumper-wire in the wrong hole. So I decided to make myself some room on the board and push connectors, displays and meters away from the center. Just take a look what came out:
check out the vid to get a walkthrough
So here is a little list what it includes:
* 2 max 232 Level converters
* An arduino NG
* 3 BNC connectors
* 8 banana Plugs
* A 50 V voltmeter
* Tiny tiny breadboard for displays and button stuff
* 4×7-segment display with driving transistors
* Datavision DV-20208 HD44780 compatible LC-display
* 2x lm3914 bar-graph displays with jumper selectable voltage range
* Avr-Net-IO for some Ethernet
* A -10V -5V GND +5V +10V earth 0V 35V Power supply
* and of course a humongous breadboarding area
This is of course just a source of ideas so if you make one of your own please let me know and if you don’t publish yourself, I’d be delighted to show off pictures of yours here!
Some words on construction:
The base is made from a piece of structured plastic (45 x 30 cm) on top of that are some pieces of wood with some plastic veneer that form the body. This makes up the wedge form in the back. On top once again I used some sign plastic covered with red spraypaint, why red? because its shiny 🙂
Ground and Earth are normally separated and can be connected on demand.
List of inspiration and components
http://www.oppermann-electronic.de/html/sortimente.html the Voltmeter was in this pack: Einbau-Meßgeräte-Sortiment 10 verschiedene, Volt- und Ampermeter und Hz-Messer
Here is a little zipfile containing the PSU-design and the VU-meter: PSU_LM3914
PS.: the space above the tiny breadboard is reserved for some raspberry-pi…
Just when I was approaching episode #25 I grilled my Avr Dragon and thought I’d make it into a humerus one. Hope you enjoy it and don’t take it too seriously!
find the repair at: http://www.aplomb.nl/TechStuff/Dragon/Dragon.html
Hi, I just started a dream project: Building an oscilloscope from scratch. Originally I wanted to use a russian 13LO37I but it turend out to be too bulky so I went and scored a waaay smaller 3KP1 / DG 7-113 from ebay.
I’ll put up a high res Photo of the tubes weiring system at my website.
One of the first portable TV-sets: http://www.radiomuseum.org/r/pilot_candid_tv_tv37.html
The DG 7-113 / 3KP1’s wiring system:
The russians 13LO37I / 13ЛО4И:
I found the first plans at Jogis Röhrenbude: http://www.jogis-roehrenbude.de/Bastelschule/Miniszill/Miniszill.htm
My last video reminded me of one of my very first high Voltage Projects. It is a Push-Pull high Voltage converter, that is made out of an old flyback transformer from a black & white TV-set, 2 2n3055 Transistors, 2 resistors,1 cap and a bunch of wires. It performs very well and reliable .
find the original circuit at: http://www.voltagezone.com/flygegentakt.html
This is just a short video about Electronic stuff you can scavange from a defective plasma TV-set – actually not that much, as I found out.
Just sad how un-serviceable such a thing is.