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Author Topic: Your latest purchase  (Read 115804 times)
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Breaking Worse
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I managed to solder on the SMD capacitors and resistor:



You know what? I'm worried if I sneeze I'll never see them again. smiley-wink

Plus, they are the devil to solder. You have to clamp them down or they just wander off.

Those look like 0805s.  I just got used to soldering them on, they are not that hard.  I have a method to pre-solder the pads, top with flux, and then use a hot air gun and tweezers to apply these parts as the first step in assembly before larger parts and this works good for me - surface tension pulls them in and makes a nice heel.  I look like a soldering expert under the microscope.  I bought a kit that requires 0402 parts and I just got a cap and a resistor 0402 set so I now have 0805, 0603, and 0402 kits for caps and resistors in common values.  I guess I am set.

http://www.ebay.com/itm/200898460364
http://www.ebay.com/itm/190805736512

I like surface mount parts that have the values coded on.  "103" and "472" is a lot easier to read than a bunch of color bars.
« Last Edit: March 25, 2013, 11:32:13 am by JoeN » Logged

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Boston Suburbs
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Whew!  I know sometimes it takes longer to get here than other places- but that's ridiculous..

I just got the MAX7219 order... LOL.
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Pittsburgh, PA, USA
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8 5V Isolation Relay Module Optocoupler Driver Module 10A/250VAC, 10A/30VDC w/diode freewheeling protection, short response time.

4 Arduino Ultrasonic Module HC-SR04 Distance Sensor

6 SD modules way cheaper than any I've seen on eBay.

2 BlueTooth modules configurable as master or slave. They do sell non-configurables for less.

2 6-axis gyro + accelerometer modules.

8 IR remote receiver modules. At the price quoted I got extras. If I didn't, I'd need them.

2 20x audio amps and 2 200x that I can't tell apart by looking at them.

With registered shipping from HK and Paypal fee, $68.40 total.
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SE USA
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intel i7 3770k
8 gb ddr3 2400 ram
ATI 7950 3gig video card

to upgrade my AMDfx 4170, 8 gig ddr 1866 ati 6870

now I have a phenom II 720x3 with 4 gig of DDR2 1066 and a geforce 9600GT to sell off

 smiley-twist
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Pittsburgh, PA, USA
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Do you run flight sims by any chance?
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no
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Sounds like a nice Skyrim setup.
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Another oddball item arrived today, a 75 foot Siecor Gold fiber optic cable.  Two strands, tiny stuff.  I got it on one of those 99 cent bids.. mainly because I haven't played with optic fiber and seventy five feet of it for a buck was a no brainer.

So, what exactly can I misuse this for?   smiley-mr-green
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Dubuque, Iowa, USA
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So, what exactly can I misuse this for?   smiley-mr-green

Dog leash for the digital age? Strangle your wife with them and take her life insurance money? I have no idea; the fibers are so small that they aren't capable of much light output. I fiddled with some but never had much luck in the blinky light department.
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Well the fiber cable may be a nice strong silicone rope smiley

However, I did finally land a good multimeter:

Amprobe AM-1250 True RMS  Multi-Meter (used, tested good)

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Pittsburgh, PA, USA
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Part of my latest DealExtreme order:
1 PIR module, including lens and electronics --- $3.50
1 28-pin ZIF socket --- $2.80

Yes, a ZIFduino is in the future works.

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mouser.com is selling TLC5916IN LED drivers for 94 cents each (in quantities >= 10).  I just picked up two fists-full. 
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Bought a couple of freetronics mega protoshields and stack header sets . A delight to put to use.
Returned the Duratech soldering station that stopped working after 1 day  smiley-eek-blue and replaced it with the Dick Smith one. Still seems to be working after day #2.
0.7mm solder melts a little quicker, a big help.

Nearly finished this project so bought the Experimenter's kit to have some fun...
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Picked up a Beaglebone black this evening smiley



Also received a big bag of various components from Tayda Electronics, arrived 10 days after I made the order.

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Long ago I had local geek friends and sometimes we would chip in as a group and buy a bunch of something that was cheaper in quantity. I know that's not a bright idea over the net but I also know that if enough people want a thing at a better price then one person has a chance to get rid of excess after buying a bundle.

I've done this locally in my poor neighborhood with MP3 players and it worked fine but those were all people I knew who did buy from me at cost when the players came in. I didn't get stuck and everyone got factory refurb Sansa players for $12 ea just in time for Christmas giving. Same player new at WalMart was over $30. Part of my aim then was to raise awareness about prices and group action, poor don't have to be so poor, but that did not get through so well as the only pro-active one was me even after making the point.

So I am here now and there's an item that when 100 are bought costs 5 Euros each but when less than 100 are bought costs 20 Euros each. It's an audio module that I believe could work well and easily (I struggle with some others< STILL) with or without an MCU. I plan to get one to test and if it's what I think, figure out how to buy 100. I know someone who will want 20 and I will want 5 to 10 but the rest, I need to see if there will be takers after the units arrive, knowing that shipping won't be free.

http://www.vlsi.fi/en/products/vs1000module.html

Quote
VS1000 Module provides a quick and low-cost way to add high-quality analog stereo output to a system. It has industrial qualification and long term availability that makes it attractive for many applications.

Quote
    Plays audio from micro-SD card or internal SPI Flash (or both)
    Can be customized, both firmware and content
    Can copy audio content and update firmware from micro-SD card to internal Flash
    Triggered via USB, UART or IO pins
    Line-out or headphone stereo analog outputs with SNR>90dB (A-weighted)
    High-performance license-free Ogg Vorbis decoder
    Supports variable bit-rates and many sample rates
    Plays from internal Flash up to 20 mins, play time can be extended to several days by using micro-SD card
    Firmware customization tool VSIDE is available for free
    Single power supply 3.4...5.5V, Note: IOVDD is generated from internal regulators, IO pins are not 5V tolerant!
    Low-power operation
    Industrial temperature range

Note that the IO pins are 3.4V only, need voltage leveling to use. But it has USB and UART IO which I'm pretty sure that USB is always 5V and I think (please help here!) that UART is the same 5V as our serial and software serial.

Anyhow this is just to see how the idea is received.
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I find it harder to express logic in English than in Code.
Sometimes an example says more than many times as many words.

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