Author Topic: What did you buy today? Post your latest purchase! (Read 5258308 times)

mrjoda · « **Reply #8750 on:** August 30, 2019, 11:30:53 am »

i just recieve a new tool.

Fenton Bresler · « **Reply #8751 on:** August 30, 2019, 12:43:07 pm »

A beautiful set of Probemaster DMM probes all the way from the U,S and A to here in Belgium. 30€ delivered. Postage was over a third of that, but definitely worth it for me. The contact resistance between the two probes doesn't even register on my DMM, the ones they are replacing would read 50+ mohms! Short leads so as to not clutter my bench. Very happy with my purchase!

mrjoda · « **Reply #8752 on:** August 30, 2019, 02:43:50 pm »

holy smoke, happiness continues

And the weekend is here.... I have all what is needed for copying bode100 injection transformer

Include bode100 and genuine transformer (at lab in work).

Howardlong · « **Reply #8753 on:** August 30, 2019, 06:10:43 pm »

Quote from: fourfathom on August 30, 2019, 12:55:12 am

I just bought $100 worth of 5% SMD 0805 capacitors, ranging from 10pf to 2200pf (all C0G), plus some bigger ones, and a few 2% SMT inductors between 100nF and 1nF. I was getting tired of not having the right parts when building RF circuits. I already have a large random assortment, but the gaps and various sizes were frustrating. I also picked up 100ea of some various opamps. I only *needed* a few, but the qty discount was hard to pass up. Besides, you never know...

I used Digikey. These components could have been cheaper, but I wanted the good tolerances that I could trust. IMO, still a bargain.

Good investment.

I set up my first big SMD collection from Digikey 15+ years ago, with 0402 and 0603 in E96 resistors, E24 MLCC caps and E12 MLCC inductors. About eight or ten years ago, I added E12 wirewound RF inductors in 0402, 0603 and 0805, size depending on which of them had a reasonable Q.

I also have a fair number of SMD power inductors collected over the years, including a few full series in E6. The problem with lab kits for power inductors is that they’re not really quite jelly bean enough to warrant stocking the plethora of specifications: you’re fighting a losing battle trying to always have all the right ones in stock.

I still use them very regularly, and have yet to run out of a value, but I do tend to keep reels of the very common values.

fourfathom · « **Reply #8754 on:** August 30, 2019, 06:34:16 pm »

Quote from: Howardlong on August 30, 2019, 06:10:43 pm

The problem with lab kits for power inductors is that they’re not really quite jelly bean enough to warrant stocking the plethora of specifications: you’re fighting a losing battle trying to always have all the right ones in stock.

I don't do power work, just RF, so I have a good assortment of iron powder and ferrite toroid cores, so when I'm playing around I can wind the oddball inductors as needed.

Mortymore · « **Reply #8755 on:** August 30, 2019, 10:17:59 pm »

Quote from: mnementh on August 30, 2019, 12:30:57 am

@Mortymore - Is that a city street lamp you're molesting there...?

mnem
Eh. Okay.

It's an outdoor LED display

mnementh · « **Reply #8756 on:** August 31, 2019, 01:38:22 am »

I don't know if that's better or worse...

Keeping it on-topic:

Lenovo e550 15.6" i7-5500U 2.40GHz 8GB 256GB SSD -$220 Delivered

Upgrade for mom-in-law's ancient Win7/4GB HP. I know the SSD's a bit small, but the price was right and she's a desktop neat-freak anyhow, so will take some time for her to fill it up. Worst case, I can upgrade it to a larger one when she comes to visit.

mnem

BFX · « **Reply #8757 on:** August 31, 2019, 09:30:24 am »

Some goodies from TME

mrjoda · « **Reply #8758 on:** September 04, 2019, 06:03:50 pm »

jeeeez this things are bloody expensive !

i almost cried when i saw the price.

McBryce · « **Reply #8759 on:** September 05, 2019, 06:57:59 am »

For the Vintage Time Nuts among us. I got myself a Bulova Accutron from 1967, the first electronic watch made.

McBryce.

BU508A · « **Reply #8760 on:** September 05, 2019, 08:37:21 am »

Dave have an Accutron as well:

https://twitter.com/eevblog/status/771130886490198017

Video:

Mr. Scram · « **Reply #8761 on:** September 05, 2019, 08:59:50 am »

Quote from: McBryce on September 05, 2019, 06:57:59 am

For the Vintage Time Nuts among us. I got myself a Bulova Accutron from 1967, the first electronic watch made.

McBryce.

Very cool. I don't know why but I always like seeing them.

McBryce · « **Reply #8762 on:** September 05, 2019, 09:02:28 am »

It's been on my "must have" list for a long time, but it took some time to find one at the right price. Daves video and a recent MJLorton video re-kindled my interrest and I went looking again.

McBryce.

Free_WiFi · « **Reply #8763 on:** September 09, 2019, 02:23:33 pm »

An tip reactivator for just €6.00 on amazon.

Mortymore · « **Reply #8764 on:** September 09, 2019, 06:15:41 pm »

ISO-Tech ICA10T Flexi Current Probe

Nominal Animal · « **Reply #8765 on:** September 09, 2019, 07:59:38 pm »

Another USB-WWAN (mini-PCIe) adapter from fleabay. Cost about 5€, so no big risk.

I have a Huawei ME909s-120 3G/4G/LTE modem working fine on one (Ubuntu/Mint NetworkManager/ModemManager integration works perfectly out of the box!), but the USB-miniPCIe/WWAN adapter I have has an AMS1117 LDO (5V to 3.3V at max. 800mA) that gets hotter than I'd like, and there is no way to add heatsinking to it. I'm hoping the new one has a buck converter instead. Can't see the text on the 6-pin chip, but the presence of an inductor (and some capacitors) indicates I can have hope.. although what you get off fleabay isn't always what's on the pictures.

I'd rather not have to make the adapter board myself: soldering the mini-PCIe connector is at the brittle edge of my current skill. Otherwise it is very simple, just USB, a SIM card holder, mini-PCIe connector, and 5V to 3.3V regulation, and some supply bypass caps.

rsjsouza · « **Reply #8766 on:** September 12, 2019, 09:10:48 pm »

A few bits and bobs... A pair of NOS Intel P8291A GPIB ICs and a few Samsung 16x2 LCD displays.

It should yield interesting projects.

technix · « **Reply #8767 on:** September 13, 2019, 01:55:22 am »

Quote from: rsjsouza on September 12, 2019, 09:10:48 pm

A few bits and bobs... A pair of NOS Intel P8291A GPIB ICs and a few Samsung 16x2 LCD displays.

It should yield interesting projects.

P8291A... Maybe add an AT90USB1287 in there and you can get a USB to GPIB adapter?

rsjsouza · « **Reply #8768 on:** September 13, 2019, 11:31:52 am »

Quote from: technix on September 13, 2019, 01:55:22 am

Quote from: rsjsouza on September 12, 2019, 09:10:48 pm
A few bits and bobs... A pair of NOS Intel P8291A GPIB ICs and a few Samsung 16x2 LCD displays.

It should yield interesting projects.

P8291A... Maybe add an AT90USB1287 in there and you can get a USB to GPIB adapter?

Yeah, that is my intention. Just for familiarity, I would go for a MSP430F6x or a TM4C129, though.

BillB · « **Reply #8769 on:** September 15, 2019, 02:03:36 am »

A few items

technix · « **Reply #8770 on:** September 15, 2019, 03:28:50 am »

Quote from: blueskull on September 14, 2019, 06:07:12 am

Two Trenz Gowin LittleBee 9k LUT FPGA boards. Bought them for extracting FTDI firmware for my own Gowin board, but since I decided to implement JTAG with MCU, I have no use of them anymore.

Bought for 29 Euros each plus FedEx extortion, looking for sale at $20 each, USA only, free shipping.

It is better if you use FT2232 for JTAG though as that means native Gowin tool support. Depending on your MCU you can put both it and the FPGA in a single JTAG chain, which would allow you to debug both chip using native tools (Gowin FPGA tool for that FPGA, OpenOCD for MCU.) There are extremely cheap USB 2.0 hub chips like SL2.1A out there for combining FT2232 and MCU USB into one port.

Do you mind providing me a copy of that FTDI firmware? I would like to build my own Gowin board too and that would be very helpful.

technix · « **Reply #8771 on:** September 15, 2019, 04:30:49 am »

Quote from: blueskull on September 15, 2019, 04:08:29 am

1. $5 for the FTDI chip plus $1 on external oscillator (I need small size, and there's no non-MEMS oscillators that go down to 2016) is stupid for a cheap DIP-style board.

I am using 3210 size ceramic resonators on my boards for FT232H and FT2232H. Those things have built-in load capacitors so it can be smaller than a 2016 crystal and are usually even cheaper.

Quote from: blueskull on September 15, 2019, 04:08:29 am

2. The Trenz boar came with empty EEPROM. Gowin programmer can talk to an empty FTDI chip (also works even without the EEPROM on SPI bus at all). So the 93C46 only serves product string customization purpose.

If this is the case, I wonder if my Digilent JTAG/SMT2 clone would work...

djos · « **Reply #8772 on:** September 15, 2019, 04:45:20 am »

I recently got a couple of TinyPICO kits, now I just need to figure out what to build with them.

Mr. Scram · « **Reply #8773 on:** September 16, 2019, 05:28:35 pm »

I requested a personal copy of The Art of Electronics to take home on company dime and expected the bean counters to shoot me down. To my surprise they approved it. I count that as a win. It's a proper tome and I underestimated how much its sheer heft would shift me to a more suitable place on the Dunning-Kruger curve.

rx8pilot · « **Reply #8774 on:** September 16, 2019, 11:14:11 pm »

Quote from: Mr. Scram on September 16, 2019, 05:28:35 pm

I underestimated how much its sheer heft would shift me to a more suitable place on the Dunning-Kruger curve.


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Author Topic: What did you buy today? Post your latest purchase! (Read 5258308 times)

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