Benjamin Blundell

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@beeman1885 4 күн бұрын

Great video. Heard about it from the Hackaday podcast where they gave it a mention.

@BenjaminBlundell 9 сағат бұрын

Oh grand! I hadn't heard that. Glad you liked it.

@nmcooke 13 күн бұрын

Great video. I've debated a DIY scale of some sort for my hives. I wouldn't worry about putting warnings in future videos because anyone with a bee phobia (technically melissophobia or apiphobia) has no business watching videos with bees in the title. Might be a good lesson for them if they happen to get triggered ... the importance of reading titles. 🤣

@epremeaux 16 күн бұрын

Load cells are awesome. But once you learn how to use and apply strain gauges, you can make a load cell out of almost anything. One project (in a professional capacity) I had was a novel approach to measuring lift in a hybrid drone/plane design. I applied strain gauges to the carbon fiber wing spar. To calibrate, we flipped it upside down, and then applied calibration weights according to the load distribution of the wing design. I think we went through 10 steps of lift loading, such that we had this whole table of data. Even though we "hacked" a load cell out of unconventional materials, it was still surprisingly linear. The 4 wire load cells are full Wheatstone Bridges (often termed "completed"),. They have all four resistive elements. Meanwhile, the later cells you show with three wires are half bridges. They require two additional resistors (usually back in the amplifier PCB), or you can use them in pairs. The advantage of the full bridge is that they are temperature independent. All 4 resistor elements are attached to the same thermal object (the load cell metal), so there is no drift in measurement due to temperature differences. The other advantage is that they obviously do not require a completion circuit. So, you could connect a single load cell to that amplifier board and it will work as a single cell scale. A potential disadvantage is a mechanical one: In order to have all 4 strain gauges mounted to the cell, in such a way as to be that when unloaded, it is thermally and mechanically equally biased, cells must be mounted on both top and bottom. When the load cell is under load, the strain gauges on the top are stretched, while the gauges on the bottom are compressed. This serves to effectively amplify the output signal more than a single gauge design. However, needing to have 4 gauges could pose mechanical issues, depending on the application. You must be sure your design does not apply mechanical pressure on the white rubber on top or bottom. The 3 wire cells are generally cheaper to manufacture, as they only need 2 strain gauges (and there is a "trick" to use only one, making them super cheap). But with the completion circuit often packed away in a nice cozy box somewhere, they are highly temperature dependent. They drift a lot, and need regular calibration. To mitigate this, they are often installed in twos or all four, rather than singular cells. The pairs complement each other, and are "at the source" so there is less temperature differential between them, leading to less drift.

@BenjaminBlundell 15 күн бұрын

This is good stuff! Thanks! The half bridge design seems much more 'mechanically' secure so far - I've some questions about the original one with the independent amplifiers and cells as I'm not totally convinced it's been reading right. Very likely I'll do a version 3 of these scales this summer, taking into account your comments there.

@epremeaux 13 күн бұрын

@@BenjaminBlundell Last year we built a few bee scales with the parallel beam load cell (first type you showed). Just a single cell in the middle of one side (mounted to some aluminum L so as to grab the edge of the beehive), using the lever method i.e. the opposite side is static. Cell itself measures great, but hive measurement is considerable approximation, depending on if the bees work middle out, or for some reason huddle to one end a bit more than the other.

@TheZorch Ай бұрын

There are modern keyboard replacements for the A500 and modern optical mice that are compatible without needing an adapter or a mod.

@BenjaminBlundell Ай бұрын

I felt the tank mouse was something I could keep, whereas the floppy drive I was keen to replace, although the HDD makes the gotek a bit redundant. I'd like to do a complete modern a1200 at some point, complete with network, modern keyboard and mouse as you suggest. That would be more of a workhorse computer. It's on the list :)

@projf Ай бұрын

🐝Always good to see badges in use. Do you measure hive temperature with a sensor too?

@BenjaminBlundell Ай бұрын

Thanks! No, I don't measure temperature. I'd have to modify the hive a bit which I'm reluctant to do, and any sensor would get covered in propolis after a while but I'll think on.

@randall4876 Ай бұрын

Very cool project! The only thing I'd like to mention is that those exercise weights often vary from their marked mass. And if your calibration is off on a 1.4Kg weight, then extrapolating that scale factor out to 44Kg might mean that you end up off by multiple Kilos. It might be worth it to calibrate using a heavier weight, or use a known good scale to measure your small weight to ensure you're using an accurate measure. Of course, if a kilogram or two doesn't really matter here, then feel free to ignore me!

@BenjaminBlundell Ай бұрын

It's a good point aye! I did weigh that weight on a set of kitchen scales and it was as reported. I don't mention that on the video though. Perhaps I should put that down on the blog? Thanks! Tbh, I'm worried how they'll report as the weather changes and it gets colder.

@epremeaux 17 күн бұрын

for this reason, when working with load cells (I too have made a few bee hive scales for a friend, as well as a lot of other stuff), I try to have AT LEAST a low and a high weight calibration points. See my other comment..

@CharlesYarnold Ай бұрын

Beeeeeeees 🐝

@nmcooke 13 күн бұрын

For what it's worth if you click the translate to English button on your comment it adds an E. 😂

@DanielEdwards- 2 ай бұрын

I’m three years late to the party, but a hair dryer to the warranty sticker would have softened the glue to make it easier to peel away.

@BenjaminBlundell 2 ай бұрын

Thanks! I shall bear that in mind for the next one.

@ghinzani1 2 ай бұрын

Don't suppose you actually do this for customers machines? Would love to get my 500+ working again.

@leechatt9709 4 ай бұрын

Screwdriver works everytime!

@Zan_Jayna 4 ай бұрын

Does it still destroy all your diskettes? That was it's most popular feature

@kopparsulfat 4 ай бұрын

What was the total cost for this project?

@naviamiga 7 ай бұрын

Always wince when I see the chip puller. When I do it I feel like I'm going to break the chip or the board.

@RetroGamesRediscovered 8 ай бұрын

Interesting video, I've thought about cleaning my different machines, I think I'll do what you did rather than retrobrighting.

@gaeljehnno 8 ай бұрын

Tha a520 sure look like a joke, i'm happy we have rgb on all our tv in my country(scart).

@JestersDeadUK 9 ай бұрын

That music is SHOCKINGLY bad man. Lots of royality free decent stuff around too.

@CollinBaillie 10 ай бұрын

Which bank did you rob? 😂

@rafaelmmartinez9170 Жыл бұрын

If you are running the Vampire, the trap door memory is not needed, right?

@BenjaminBlundell Жыл бұрын

Probably. I'd have to play a bit more with the vampire to allocate its memory to fast / chip etc.

@wimwiddershins Жыл бұрын

Yes, to having older Pi's sitting around. I have a box full.

@Foxxy11256 Жыл бұрын

The music tho’. I couldn’t stick it out.

@BenjaminBlundell Жыл бұрын

I shall bear that in mind. Thanks!

@JarppaGuru Жыл бұрын

6:10 yes you opened no return xD

@JarppaGuru Жыл бұрын

3:47 no ruah if floppies work OR we can just use raspberrypi its not amiga then

@doctorsocrates4413 Жыл бұрын

I have 3 amiga500s in original boxes just sitting around..with a bit of courage i intend to clean the casing on one of them...loved them in my youth and i love these machines now at my tender age of 51...thanks for the video.

@Elbas_Tardo Жыл бұрын

Vampire is a very expensive accelerator, in the end it costs more than a current cheap PC, with the power of a pentium that you can buy for 10 or they will even give it to you as a gift. I would have bought it as an expensive whim for my Amiga500, for 100-150 but it is an absurd expense.

@BenjaminBlundell Жыл бұрын

I was happy to support the project and it was the best option at the time. However, nowadays there are more affordable options I'd certainly try. Maybe on the 1200 :)

@CJ-ur3fx Жыл бұрын

the music in the background is by Scroobius Pip if anyone is wondering.

@Joliie Жыл бұрын

to get stickers off, a heatgun could be your friend, warm em up so the adhesive gets liquid

@BenjaminBlundell Жыл бұрын

Thanks! I'll certainly try that next time!

@Joliie Жыл бұрын

@@BenjaminBlundell Talked with a buddy about it, and he said to use light fluid and to YT it, seems like it's a more effective way to do it. Just a heads-up before you melt a case :) - kzbin.info/www/bejne/Y5SzpWido9SMpbc&ab_channel=GalacticCollector

@rog2224 Жыл бұрын

An enjoyably satirical piece.

@helmutzollner5496 Жыл бұрын

I like your modernization video. It is great to see you putting new life into.this lovely old platform.. HOWEVER, you 8 bit sound audio soundtrack is atrocious. I hated that sound in the 80s and if the Amiga would have had that kind of sound, I am sure it would not have been a success.

@TheMadricks Жыл бұрын

To remove stickers you can use for example the hot air of a hairdryer. In the other videos of restored Amigas I have seen that they use hydrogen peroxide with UV light for this. After that the device and the keys look like new from the store. I would clean the case and keys again. I think it's great that there are so many upgrades for the Amiga 👍 If I had known that there would be such extensions one day, I would have kept my Amiga 500 and 1200. Thank you for the upgrade guide. 🙂

@BenjaminBlundell Жыл бұрын

Top tip with the hairdryer. Cheers

@vanhetgoor Жыл бұрын

Why limit yourself with only a meagre 512K RAM expansion, go for the max! An 86000 processor could imagine itself something like 32 Megabyte, so give the chap 32 Megabyte! Let him live the life of luxury, who knows how many days this Commodore can still lift his data and address lines? Make the poor basterd proud!

@Stoobers Жыл бұрын

Frontier running so smoooothly!

@kcharles8857 Жыл бұрын

My biggest regret was selling my beloved Amiga.

@AllensTrains Жыл бұрын

You were lucky it booted up! You could very easily have had a failure! Thanks for uploading.

@nickolasgaspar9660 Жыл бұрын

Amiga was not the first multimedia home computer. Jay Miner's first home computer back in the 70s was the first multimedia machine (Atari 8bit line)

@nickolasgaspar9660 Жыл бұрын

In order to remove chips that have been sitting for decades in a socket you will first need to spray some contact cleaner on them. The job becomes noticeably easier.

@OldAndNewVideoGames 2 жыл бұрын

Watched it all the way through, very informative video. But where you won me over was with "one of the best games". Because it is. :)

@Freezone7 2 жыл бұрын

this is actually amazing, didnt expect this :D

@ion337 2 жыл бұрын

@Orionrobots 2 жыл бұрын

Lol

@RoseTintedSpectrum 2 жыл бұрын

Hahaha, wonderful!

@BenjaminBlundell 2 жыл бұрын

Glad you liked it! :D

@phillbanks4103 2 жыл бұрын

The nostalgia I had a 500+ as a kid, great work but you didn’t clean the keys lol

@sebastianabreu1243 2 жыл бұрын

Nice!

@captainfuture2882 2 жыл бұрын

Do you use lead based soldering?

@BenjaminBlundell 2 жыл бұрын

Sometimes yes. Depends on the application

@OrenTirosh 2 жыл бұрын

Lots and lots of luts…

@BenjaminBlundell 2 жыл бұрын

3039 apparently

@raymoreton3184 3 жыл бұрын

Nice I brought myself a 2nd hand 500 when I was a teenager but as upgrades of hardware came along I had to sell mine also, I brought a 1200 maybe 3 years ago and I am in the process of modding it with brand new case key tops (which I am still waiting for) os 3.1.4 installed on a sd card I have also burnt my own kickstart roms for 3.1.4, I am trying to get it looking original like it came from the shop.