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Topic: Your latest purchase (August 20th to February 11th) (Read 106486 times) previous topic - next topic

bilbo

I was really bummed when the chronos deal expired...that was a huge discount. Hopefully TI will do more stuff like this, now that theyve created their deals website.

My most recent was a glass test tube for the LED spectrophotometer Im building. Not exactly electronic -- but an important purchase nevertheless. I never realized this, but Amazon has some ok prices on lab supplies if you look to the right seller.

@Buzzdavidson, I got a pair of cywm6935's from Mouser a while back. They're really easy to interface with, and I made an RF spectrum analyzer with one, along with  trying out some communication between the two. I got a fairly reasonable data rate with the right setup. Just beware the ANNOYING 2mm pitch connector, and the 3.3volt logic levels. I ended up using this to connect it when all else failed: http://www.sparkfun.com/products/8732


buzzdavidson



@Buzzdavidson, I got a pair of cywm6935's from Mouser a while back. They're really easy to interface with, and I made an RF spectrum analyzer with one, along with  trying out some communication between the two. I got a fairly reasonable data rate with the right setup. Just beware the ANNOYING 2mm pitch connector, and the 3.3volt logic levels. I ended up using this to connect it when all else failed: http://www.sparkfun.com/products/8732



Cool, thanks for the tip.  I've actually got a bunch of similar cables that I scavenged from advertising displays destined for the landfill, so the pitch isnt a huge deal.  BTW, I think that your post was my inspiration for buying the thing in the first place...

Onions

My multimeter has been playing up over the past week or so, so I decided to buy a new one (http://www.maplin.co.uk/ut-70b-autoranging-professional-digital-multimeter-34800). It looks like a quality piece, and I really hope it is, given the price. (Just bought this, so I wasn't planning on buying anything for a long while)...
My old meter cost £15, and came straight off eBay. Although it looked like a good one, I was a bit sceptical, given the price. I have had it for somewhere around a year, and it was producing some interesting results, recently. I was testing a battery (should have been giving 1.5V) and found that, according to my 'meter, it was giving somewhere around 3000V. Hmm, something odd there!

Onions.
My website: http://www.harryrabbit.co.uk/electronics/home.html Up and running now! (Feel free to look round!) :D

retrolefty


My multimeter has been playing up over the past week or so, so I decided to buy a new one (http://www.maplin.co.uk/ut-70b-autoranging-professional-digital-multimeter-34800). It looks like a quality piece, and I really hope it is, given the price. (Just bought this, so I wasn't planning on buying anything for a long while)...
My old meter cost £15, and came straight off eBay. Although it looked like a good one, I was a bit sceptical, given the price. I have had it for somewhere around a year, and it was producing some interesting results, recently. I was testing a battery (should have been giving 1.5V) and found that, according to my 'meter, it was giving somewhere around 3000V. Hmm, something odd there!

Onions.


That new meter appears to come with a RS-232 serial interface. A nifty project would be getting it to talk to your arduino as a serial connected multimeter. You will have to deal with voltage translation and logic inversion needed to use the arduino TTL serial pins, but I would think it would be worth the effort.

Lefty

Senso

So, an 100 pack RGB led from eBay to make an 4x4x4 RGB led cube, two geared motors with encoder from Digilent and 90€ of parts from Mouser, what a nice weekend shopping! :D

buzzdavidson

#35
Aug 30, 2011, 05:20 am Last Edit: Aug 30, 2011, 05:22 am by buzzdavidson Reason: 1
@lefty - heh.  I'm still using my mid 1960s Simpson 260 VOM.  Works like a charm.  I've got a Radio Shack 22-805 but it mostly gets used by my son for testing batteries.

Also have a Weston 689 ohmmeter from the 30s, but haven't used it in a while.  Does look awesome on my shelf though.

You kids and your fancy digital meters - humph.  Now get off my lawn!

retrolefty

I too have a Simpson 260 bought new in the 60s, it was the meter of choice in it's day. Today my pride and joy is a fluke model 45 bench meter. I got for a steal on E-bay about 6/7 years ago. Listed for $700 when new.

http://www.testequity.com/products/83/

Lefty

draythomp

I'll join the Simpson 260 crowd.  I bought mine in 1971 because it was the only meter on the market that wouldn't peg out when it was exposed to high powered RF fields.  I worked in commercial radio at the time and the 3-4 hundred watt transmitters would peg all the other meters.  That 260 worked just fine.  It still works, but the knobs have been replaced and the handle flops around.  I've had to change the fuse in that thing probably a hundred times because I left it on ohms and tried to measure a car battery.  Maybe I should restore it and put it on a shelf.

Onions

Quote
That new meter appears to come with a RS-232 serial interface. A nifty project would be getting it to talk to your arduino as a serial connected multimeter.


Awesome idea! Although the meter has an RS-232 port, my computer does not. I saw some RS-232 -> TTL convertor circuits somewhere in a book I have, so I'll find them and give it a go!

Quote
I'm still using my mid 1960s Simpson 260 VOM

I don't have a Simpson 260, but I do have an old Avo (model 40) sitting on my desk. I rarely use it, but it looks good, if nothing else! :D As I did not buy it myself (it was something my Grandpa was going to throw out), I have no idea how old it is; it certainly seems ancient though...

Onions.
My website: http://www.harryrabbit.co.uk/electronics/home.html Up and running now! (Feel free to look round!) :D

EmilyJane

I had a Simpson 260. I also had a Triplett. The 260 had a much higher input impedance but the Triplett was more durable.

Unfortunately, my latest purchase was a PTCR and starter capacitor for the ac on my RV.

buzzdavidson


Unfortunately, my latest purchase was a PTCR and starter capacitor for the ac on my RV.


That's no fun at all. <g>

My 260 *was* in pristine condition until last weekend when my cat knocked it off of a shelf onto my concrete garage floor.  Knocked a chunk out of the bakelite, but the meter is otherwise unscathed.

I inherited both of these meters from my Grandfather in the early 80s.  I only wish I had been more into electronics when he sold his house and liquidated his equipment - he had literally *thousands* of tubes, equipment, etc going back to the early 1940s, a lot of which was still in boxes.  He gave the lot of it to the local high school and took a nice tax write-off, but I highly doubt they had any idea of the value of the collection.  Sigh.

CrossRoads

New parts!
ATMega2560 + Schmartboard to make a Mega2560 equivalent
Parts for Mini-uino when boards come in.
Little parts sure seem to need big packaging!
Guess  I better clean off my desk ...
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

bld

Not exactly a purchase, since I got it for free... but here it is anyways


An Epson Stylus Pro 10000CF printer
captain-slow.dk | non contagious!

CrossRoads

Bet that takes an expensive toner cartridge!
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

iggykoopa

Ordered parts for when the Mini-uino boards come in too :D I'm excited. Got the parts to make this http://www.swansontec.com/sprobe.html logic probe too.

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