That's so true. Although if they do a retro JP Lego set, I hope that they make one of the Dilophosaur and Nedry, (With the Jeep) and have Nedry come with 2 Heads. With with the Spitters venom all over it.
Having used both, do you prefer to use the protoboards with interconnected
pads (I think you're calling that stripboard), or the pad-per-hole
protoboards? I've been using a lot of the interconnected variety lately
(certainly less hassle than making my own PCBs for quick projects), and
don't really like the idea of the pad-per-hole type. It just seems like
unnecessary extra soldering and effort to make connections. I'm curious if
you have any preference or thoughts on the comparison.
+Brant Martin I agree, cutting stripboard tracks is a real pain - those track cutter tools are never sharp. I really enjoyed working with the pad-per-hole board
Well, the tradeoff is that you have to cut the tracks on the stripboard. I like pad-per-hole better for that reason, I think it's easier to add extra wire or solder than it is to dull my knife on the fiberglass.
I just tested a 1N4148 with LOTS of current. It got very hot, smoked and
then went short circuit. So you may have to make a SROM instead.
(Snippable Read Only Memory)
+Julian Ilett You could definitely make it work. But it would require a Photonicinduction approach and the programmer would probably be quite violent. (But it would make a great video if your mains incomer fuse lasted for the full programming session.)
+bigclivedotcom Hmm, the 1N4148 failure mode does appear to be 90% short circuit. The one test I did before ordering the bits for my PROM was an open circuit failure. There may be a problem! I might have to go with your SnipROM™ idea :)
Ah, you're way ahead of me. I've still got the APA strip sitting in my
ebay shopping basket. I've never tried deliberately blowing a 1N4148
diode. I wonder if they might actually go short-circuit like their big
brothers often do.
+bigclivedotcom The strip I showed was an auction win. It's 60 leds/m and cost a lot less than another strip I bought that's just 30 leds/m. I'm going to try blowing ten diodes right now...
Alice is a cheater, I ordered 3 items, never got them, then she said she
will send them again with my next order so I made another order and guess
what, it did not arrive, again. Save your money, do not buy from that shop.
I was not that lucky, a week ago she promised refund, she sent me this message:"I just submitted the refund request. There should be results in 48 hrs. Thanks- alice1101983"today I informed her that I did not receive any refund and here is hers reply:"Oops. The refund was expired.I have to apply refund from another chanel. Is it possible for you to revise your feedback? If yes, it’s might be a strong support for me to apply the refund for you.Best regards,- alice1101983"not sending the goods AND blackmailing customers, nice way to run the bussines...
+David Pilling Replying to my own comment. I did gave Alice another try, the parts came in 11 days all nicely packaged. A good thing about Alice is that they sell so much electronics, unlike many other vendors on ebay one could get everything for a project from one source.
I ordered one expensive item from Alice, it didn't come, and I had difficulty getting anyone to listen to me. Eventually they said they'd send a replacement which did not turn up.A few weeks later an irreplaceable package from a completely trustworthy local sender vanished.Conclusion one has to accept some losses from all sources.You can't argue with the feedback scores on ebay. Dumping the people with unreliable postal delivery may even be a good strategy for suppliers.When I see something I want I'll give Alice another go.
Hi Julian, could you use washers instead of drilling coins? My 3.3V
converters just arrived yesterday also. Got to stock up on some op-amps at
that price. Great to hear Fran get a mention, I'm a big Franfan too.
Thanks, as always.
+jusb1066 I've not lost anything recently - a couple of items went missing last year as I recall
Project: DIY Gamma Scintillation Probe
In this video i assemble a 3" Gamma Scintillation Probe for use with my Ludlum Model 3 using BC-412 plastic and a Philips 3" photomultiplier. The kit was ...
I am confused. How does the PMT work with only 2 lines (red and yellow)
out? Most PMTs need at least 2 connectors, one for HV/-HV, another for
signal(Dynode or Anode).
+Xiao-Peng Zhang In a 2-wire setup the detection is made by monitoring the small voltage changes in the supply voltage when the avalanche progresses through the dynode chain. This is same procedure as using a Geiger Muller tube where a detection causes a negative going pulse on the supply. This is why meters like the Ludlum can operate both GM tubes and Scintillation probes using PMTs with only adjustments to the supply voltage.
Nice! You need to connect it to something more than just a counter so that
you can see the energy spectrum of decay. Then you can see what kind of
material you have. "antiprotons" have few videos on that (
https://www.youtube.com/channel/UCnAhUiJynSNpHLNVa4nZfoQ) looks like he has
fun with his scintillator.
+Alexei Polkhanov Thanks Alexei, yes spectrometry is something i am exploring. I have an on-going project that i'm working on based on some hacked existing hardware, funds and time are slowing things down at the moment but i should be posting a video soon.