Author Topic: What did you buy today? Post your latest purchase! (Read 3087666 times)

boffin · « **Reply #8875 on:** October 13, 2019, 11:13:32 pm »

Quote from: Kjelt on October 13, 2019, 09:34:20 pm

Quote from: boffin on October 13, 2019, 06:57:11 pm
Just picked up this in a local government auction. C$100
Seems to work, and close enough in cal for my use.
Check if the PSU has an overshoot at powerup/startup, I once fried a circuit with a look a like PSU that when set to 5V at powerup shot over to 6,8V spike then return to 5V, frying my board that was still connected.

Thanks for the warning, I'll have a look.

Just gave it a try, no overshoot

technix · « **Reply #8876 on:** October 14, 2019, 02:00:45 am »

Quote from: Terry01 on October 13, 2019, 01:34:48 pm

Ive been wanting one for ages but just never got round to ordering 1! Looking forward to learning how to drive it!

If you want to, you can try turning this into two AVR dev kits in one by flashing Hoodloader2 on the USB MCU ATmega16U2. That keeps Arduino Uno features intact, while allowing you to program both chips.

technix · « **Reply #8877 on:** October 15, 2019, 05:54:34 am »

Quote from: blueskull on October 15, 2019, 04:44:20 am

Ordered 15 pcs of PCB and 10 sets of parts for my Gowin FPGA board. Despite I used 0.2mm/0.4mm vias and 0.1mm clearance between vias and traces, JLCPCB still approved the order.

(Attachment Link)

Youtube video is on its way. Could be a 3 video series, hardware design, hardware prototyping and EDA software & blinky demo.
If all goes well, it will end up on a fundraising platform soon after I land in China in 6 weeks, and I hope I can get it debugged and built while I'm still in US -- carrying parts is messy.

What is this? What are the supporting parts?

BFX · « **Reply #8878 on:** October 15, 2019, 08:34:55 am »

Quote from: beanflying on October 09, 2019, 02:24:38 am

Quote from: BFX on October 08, 2019, 05:23:43 pm
I was skeptic but after saw some videos decision was clear BEST BST-863 from china
Internal working-out is better like original Quick one.
And even somehow they delivered this guy without any additional payments (c_u_s_t_o_m_s, V_A_T) to europe. Great
I'm so satisfied with that.
(Attachment Link)
New BST-863 during testing
(Attachment Link)
Old shitty one
(Attachment Link)
New one at his glorious place

Did you develop an issue with the old 'shitty' one

I have a Hanba badged version of the 968A+ that had been great until a few weeks ago when the soldering iron section started triggering an error that I haven't looked at sorting. The hot air side of it has been really good to have on the bench but I don't do a lot of SMD rework with it it is more a general purpose heat gun in my case with a bit of rework.

First of all the power was relatively low (took me long time to desolder some bigger components) temperature regulation was horrible and there was no power switch (always on).
With older some FETs took me several minutes to desolder with new one it's few seconds. Really it's uncomparable how better is new one.

BravoV · « **Reply #8879 on:** October 15, 2019, 06:14:16 pm »

Thermalright NVME heatsink as mine is quite toasty. Quite surprised when hold it for the 1st time, as this thing is heavy for it's size.

Tinderbox (UK) · « **Reply #8880 on:** October 15, 2019, 08:23:51 pm »

Quote from: Mortymore on September 20, 2019, 06:37:54 pm

Another multimeter for the collection,
Iso-Tech IDM505, from evilBay for £75 with shipping costs included

I bought an ISO-TECH IDM505 as well from eBay a couple of weeks ago, They accepted my offer of £55 delivered for a brand new meter fully boxed , A steal for such an excellent meter.

He still has them for sale.

John.

thm_w · « **Reply #8881 on:** October 15, 2019, 08:43:42 pm »

Quote from: blueskull on October 15, 2019, 04:44:20 am

Ordered 15 pcs of PCB and 10 sets of parts for my Gowin FPGA board. Despite I used 0.2mm/0.4mm vias and 0.1mm clearance between vias and traces, JLCPCB still approved the order.

(Attachment Link)

Youtube video is on its way. Could be a 3 video series, hardware design, hardware prototyping and EDA software & blinky demo.
If all goes well, it will end up on a fundraising platform soon after I land in China in 6 weeks, and I hope I can get it debugged and built while I'm still in US -- carrying parts is messy.

JLC will accept it but if its anything like my board they will chop up the gerbers a bit to fit some of their rules. The 0.4mm vias probably be OK, and its e-tested anyway so end result should be good.
There were a few rules I missed as I had not seen them specified before: hole to trace, hole to hole spacing, etc. Future orders I'm using these rules as a guide: https://github.com/ayberkozgur/jlcpcb-design-rules-stackups

MosherIV · « **Reply #8882 on:** October 15, 2019, 10:31:43 pm »

Another ebay steal......Megger LCR131 for £31

It is a bit grubby but should clean up nicely.

Do I need to do a tear down?
Dave has already done a tear down of the Keysight branded U1733B version of this LCR meter

thm_w · « **Reply #8883 on:** October 16, 2019, 12:52:40 am »

Quote from: blueskull on October 15, 2019, 08:55:56 pm

Quote from: thm_w on October 15, 2019, 08:43:42 pm
JLC will accept it but if its anything like my board they will chop up the gerbers a bit to fit some of their rules.

I know the rules, I just want to see what happens if I submit a design that violates them.
WellPCB can make 0.1mm track to via distance designs, but I'd like to give JLC a try.

Yeah let us know. You can see what I meant attached.

URI · « **Reply #8884 on:** October 16, 2019, 06:54:59 pm »

Received a HP 8481D today.

Quick check with my HP 3335A shows it's working fine down to -70dB (in fact it goes down to ~-75dB).
A quick check with my cinesium low cost siggen (range: 34MHz to 4.3GHz) shows that it's level is frequency-dependent off in a range from -2dB to +3dB.

I'm happy since I only paid ~122€ delivered.

Now looking forward to checking my new toys to come; two HP attenuators that I'm waiting for being delivered.

mrjoda · « **Reply #8885 on:** October 16, 2019, 07:19:48 pm »

pcbs for my project of 4 quadrant PSU arrived

now i have to wait for parts (glitch in time managment

)

more info here : https://circuitmaker.com/Projects/Details/MEOWelectronics/4QPSU

thm_w · « **Reply #8886 on:** October 16, 2019, 08:15:42 pm »

Quote from: mrjoda on October 16, 2019, 07:19:48 pm

pcbs for my project of 4 quadrant PSU arrived now i have to wait for parts (glitch in time managment )

more info here : https://circuitmaker.com/Projects/Details/MEOWelectronics/4QPSU

Very cool, you should make a project thread once you get it up and running. I'm trying to do similar with OPA548 but I suspect its current limiting is going to be trash compared to LT1970.
As you noted in the link you can boost the output stage with some external parts, interesting they have V+/V- pin to drive specifically, and the mosfets provide built in protection as well to clamp the output, super convenient.

Should C5 and R13 on the output be in series instead for a snubber? Or is it some other function.

exe · « **Reply #8887 on:** October 16, 2019, 08:47:05 pm »

Quote from: mrjoda on October 16, 2019, 07:19:48 pm

pcbs for my project of 4 quadrant PSU arrived now i have to wait for parts (glitch in time managment )

more info here : https://circuitmaker.com/Projects/Details/MEOWelectronics/4QPSU

Wow, that's cool! Could you please post schematic files in pdf?

TheSteve · « **Reply #8888 on:** October 16, 2019, 09:15:42 pm »

Quote from: blueskull on October 16, 2019, 01:46:48 am

Cancelled my Surface Pro 7 pre-order. Overlooked the fact that its USB-C is not thunderbolt 3, so all of my docks won't work with it.

Replaced with XPS 13 2-in-1. Dell is running a good promo now -- $200 Visa prepaid card, $100 rewards, $50 off, 50% storage upgrade off plus standard discount and member discount.

After all discounts, the $1650 unit plus $60 OS upgrade, $50 white interior upgrade and $50 storage upgrade became $1360 plus tax.

"$50 white interior upgrade"

thm_w · « **Reply #8889 on:** October 16, 2019, 10:22:15 pm »

Quote from: exe on October 16, 2019, 08:47:05 pm

Wow, that's cool! Could you please post schematic files in pdf?

Scroll down to "Releases" and click "Download files" on the right, everything is there.

MosherIV · « **Reply #8890 on:** October 17, 2019, 08:54:37 pm »

Another bargin.

Picked up this tool chest

In Halfords for £30

vk6zgo · « **Reply #8891 on:** October 18, 2019, 03:14:26 am »

Quote from: MosherIV on October 17, 2019, 08:54:37 pm

Another bargin.

Picked up this tool chest

In Halfords for £30

I have one, just like that, but I left it out in the Sun, & it has faded to a lovely shade of pink!

Marck · « **Reply #8892 on:** October 18, 2019, 11:31:10 am »

I got home from work and my new to me EBay Rigol DS1052e was waiting for me. Fired it up amd it appears to be doing what it says on the box. Now to learn how to use it.

beanflying · « **Reply #8893 on:** October 18, 2019, 11:41:26 am »

Added to my Makita collection because Evilbay offered my a decent discount and it will pay for itself over the next few months instead of paying someone else for a CNC enclosure build.

rsjsouza · « **Reply #8894 on:** October 18, 2019, 02:03:31 pm »

Quote from: Marck on October 18, 2019, 11:31:10 am

I got home from work and my new to me EBay Rigol DS1052e was waiting for me. Fired it up amd it appears to be doing what it says on the box. Now to learn how to use it.

These Rigols are a joy to use. I really liked mine (sold a few years ago).

TheHolyHorse · « **Reply #8895 on:** October 18, 2019, 08:34:55 pm »

Got my self an oscilloscope, a SDS1104X-E.

I could have gotten it today, it arrived in my city to some sorting center this morning but apparently you can't move it 10km in day so I'll have to until monday. Bloody DB schenker.

Addicted2AnalogTek · « **Reply #8896 on:** October 19, 2019, 01:19:54 am »

Not exactly TE, but I bought a new iPhone Xr 64GB for $300. I'm excited to not have business calls coming in on my personal phone anymore!

windsmurf · « **Reply #8897 on:** October 19, 2019, 03:55:00 am »

Quote from: blueskull on October 19, 2019, 03:26:59 am

A few thousands of 0201 passives. I hope I know what I'm doing, and from my 2012 experience with them, they are not easy to solder. Well, my eyes are 7 years older since then.
Bodging them would be even more challenging -- I should have found the problem during schematic audition .

Don't you use an oven for that? You hand-solder 0201's?

URI · « **Reply #8898 on:** October 19, 2019, 07:42:40 am »

Quote from: TheHolyHorse on October 18, 2019, 08:34:55 pm

Got my self an oscilloscope, a SDS1104X-E.

A very nice oscilloscope with very good bang for buck!

(I got one as a second unit and to take it with me because it's also small and lightweight but I happen to use it more often than my primary oscilloscope.)

URI · « **Reply #8899 on:** October 19, 2019, 07:46:26 am »

Ordered an HP 438A dual channel power meter today for 40€; Labeled as "for parts" but in fact only showing that no sensor is connected..

Don't ask for the shipping!

Oh, and I bought my second power sensor cable also. In fact, I bought it first and then my brain concluded I had to buy a power meter with two channels..


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Author Topic: What did you buy today? Post your latest purchase! (Read 3087666 times)

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