Any idea what temp to start at?
mnem
*Thinking about Columbia's third largest export*
Do I or don't I ?
@ nearly $2/MHz I'm thinking about it for old times sake. Would I ever use it, probably not........shit I sold off all this old stuff years ago !
If you're going to do such a damn-fool thing (we're all damned fools here ), that does seem like a prime-condition example of the breed.
Looks like the timebase knob is even intact; and from what I've seen, that alone makes it a good find.Yes one this looks very straight and in the listing there's a full set of pics, closeups and from every angle.Not only that, the CRT looks to be a nice size, which makes it a good candidate for use as an X-Y display for an octopus. The small footprint of the vertical enclosure is a bench-top bonus compared to horizontal scopes.Actually they're better than that bitseeker, the last of the Telequipment's where when Tek acquired them and these D83's used Tek CRT's, from the 7000 series I think. bd139 will correct me if I got that wrong. When they are right, the fine and sharp trace on this is a thing of beauty, I've yet to use anything better.
They're a damn fine CRO, quite good to work on too and I still have the plugin extender cable I made when I last had one. Their main weakness is their EHT just like most CRO's that were pushing the limit of what was possible back then.
Any idea what temp to start at?
mnem
*Thinking about Columbia's third largest export*
With a first go with the Popper go cold and see how long it takes. Typically that have an issue with being to fast as a roaster. Up the volume a little if it is off a cart. Also possibly add a tin can chimney to stop the beans escaping.
If you want to have a decent go Sweet Marias in the USA will save you some leg work looking for Green https://www.sweetmarias.com/green-coffee.html?sm_status=1&sm_type=77
Whuf... and that's why I don't like making videos; I'm so scattered most of the time I sound like a total tool. I either have to shoot a dozen takes, or I keep going back to revisit something I forgot like this guy does; only like 10 times worse.
...
The guy really thought himself into a corner rather than properly leveraging what he already had, IMHO.And that's why I rarely watch yootoob videos!
I suspect, without having spent an hour and a quarter of my remaining life watching it, that the information in it could have been conveyed in 10 minutes - or 2 minutes if I had been able to read a blog.Cranking up the playback speed to 1.5x or 2.0x and judicious use of the J and L keys can help reduce the time commitment quite a lot.
Great... so now I can not only sound like a tool, I can sound like a chipmunk-tool as well...?
Someone saved me frommyselfTEA and hit the Buy Now a day before it finished.
Almost had a spare spot above the bench sorted for it too.
In addition to his generosity, Bean has a decidedly mischievous streak.
Upon opening the Big Boys Toys box...
In addition to his generosity, Bean has a decidedly mischievous streak.
Upon opening the Big Boys Toys box, I was immediately greeted by a mini quadcopter, complete with controller, USB charger and some spare parts ... all charged up and ready to fly. (Don't ask how I know )
Next was the OCXO with 4 way splitter - most generous and greatly appreciated. This will will be housed and become part of my setup - with a view for a PLL enhancement at some point. Some homework required - which I am going to enjoy.
Next were two 3D printed cases: Bean's hermaphroditic 2 part case and a version of the jiffy box. This "jiffy box" has machine screws and metal inserts for the lid as well as a piece of matrix board with screws to mount it on the stand-offs built into the case. Both these 3D prints were excellent, IMHO - and have given me added interest in getting my own 3D printer.
Then I found 2 3-way terminal strips, a mini bit driver, a packet of plastic stand-offs and 4 stepper motors (which are going to win some of my attention). As well there is an assortment of pin headers that I will add to my collection, which will now include some long pin and right-angled headers that I didn't have before.
At the bottom were a couple of RG58 cables (of which I can make good use) and a bag of connector goodness containing a variety of BNC connectors and adapters - including the N to BNC adapter I needed for proper connection to the 8656B output. Cheering!
Then, in a corner at the bottom was a short piece of IC tube, with a 7404 (which I will try in the 5381), an LM358 (which is useful) and .... wait for it .... a 555 timer - which cracked me up!
All in all, I must thank you Bean. A very generous box of goodies. Not sure about the green bean challenge, though - but I might hit YouTube for some pointers...
Edit: Bean has given me a link!! Bye for now.
So I was sitting here, writing an "advice asking" post about my relative level of repair inexperience vs the 2216 sitting on my bench right now when I took a break to look at CL and I found this:
https://portland.craigslist.org/clc/ele/d/canby-tektronix-equipment/6836176599.html
The seller is asking $195 for the whole pile. He claims some of it actually still works. I don't know what I would do with any of it but I hate to see it go to the dump. Am I crazy?
In addition to his generosity, Bean has a decidedly mischievous streak.
...
All in all, I must thank you Bean. A very generous box of goodies. Not sure about the green bean challenge, though - but I might hit YouTube for some pointers...
Edit: Bean has given me a link!! Bye for now.
I’m not volt-nuttering, just comparing these old dudes. Actually I don’t know which one is accurate (if any), now I need better reference..
Ero-Shan's got a magic eye watching us, now.
@mnem: screw those huntron prices. You could get a better engineer for that much more cash. BTW you got me started on STM32 now. After much googleage I found this: http://kevincuzner.com/2016/05/22/dev-boards-where-were-going-we-wont-need-dev-boards/ ... and they have 12 bit ADCs which solves a bit of a problem I have at the moment.
So I was sitting here, writing an "advice asking" post about my relative level of repair inexperience vs the 2216 sitting on my bench right now when I took a break to look at CL and I found this:
https://portland.craigslist.org/clc/ele/d/canby-tektronix-equipment/6836176599.html
The seller is asking $195 for the whole pile. He claims some of it actually still works. I don't know what I would do with any of it but I hate to see it go to the dump. Am I crazy?
Oh hell....BUY IT! If it were close to me I would.
Ero-Shan's got a magic eye watching us, now.Sorting through a box of old tubes and stumbled on one I have.
Anyone want it for a project ?
Ero-Shan's got a magic eye watching us, now.Sorting through a box of old tubes and stumbled on one I have.
Anyone want it for a project ?
Skillet or Pan Roasting needs care or you scorch the outside of the beans as they are in contact with that pan unless you stir really well. KK's Pan Roasting is under my original posts the PDF is based on. https://coffeeforum.org.au/roasting-how-to-do-it/the-absolute-beginners-guide-to-roasting-coffee-using-minimal-equipment/msg19596/#msg19596 Sweet Marias still sell these Stovetop Roaster for interest https://www.sweetmarias.com/roasting/stovetop/stovepop-stainless-steel.html
What you could try is a preheat cycle so run it up to say 100C then add the beans in. My Drum Roasters get preheated to 160-190C (depending on the bean or roast use) before dropping the Beans in but I have full control over Airflow and Power from there. The sort of curve you are looking for is the lower one here in Red I was following the faint former roast trace with. So drop in at about 190 the TC then in the beans follows the bean mass temperature on up. 10-12C/ minute for the first 11-12 minutes then backing off the power adding air and 3-4C/minute for the rest of the roast.
So I was sitting here, writing an "advice asking" post about my relative level of repair inexperience vs the 2216 sitting on my bench right now when I took a break to look at CL and I found this:
https://portland.craigslist.org/clc/ele/d/canby-tektronix-equipment/6836176599.html
The seller is asking $195 for the whole pile. He claims some of it actually still works. I don't know what I would do with any of it but I hate to see it go to the dump. Am I crazy?
As promised. The 2430 stripped naked. And I've already made a determination as to what is wrong.
Right side logic board. I haven't checked specifically what its function is.
Underside. Obviously the analog board.
Left side. Big arse 12VDC fan and the HV supply.
And finally...the top. Holy crap. This board swings up and away revealing the power supply sandwiched between this board and the analog board underneath. And that's where the trouble is. +5V, +15V, -15V, +8V, -8V all dead. The 12V fan does turn. So I have to get the power supply out. But later today. Got some domestic stuff I have to do first.