Extreme Electronics

Tesla coils - HV experiments - 3D printing - Programming - Kits via Extreme Kits Ж (npub176v…gcnr) - Gaussfest Organiser - Electronics and shed science. - Retro computing

https://www.extremeelectronics.co.uk

Playing with forces I don't understand.

#HighVoltage #RetroComputing #Science #fedi22

Toots don't necessarily reflect the views of my employer. I work for myself.

Web: https://extremeelectronics.co.uk
Extreme Kits: https://extkits.co.uk/
BSKY: @extelec.bsky.social

Public Key

npub1g8wqtet28z3yfzppkm6w8g238pz2yh5jtq24qh07lcauzzjqck4qxccrt9

NIP-05 Address

[email protected]

Profile Code

nprofile1qqsyrhq9u44r3gjy3qsmda8r59gns39zt6f9s92sthl0uw7ppfqvt2spz3mhxue69uhhyetvv9ujuerpd46hxtnfduqs6amnwvaz7tmwdaejumr0dsm5l83a

Publishing to

relay.damus.io

nos.lol

Author Public Key

npub1g8wqtet28z3yfzppkm6w8g238pz2yh5jtq24qh07lcauzzjqck4qxccrt9

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Last Notes

2026-07-23 19:02:50 UTC

Ill apologise now, if JLCPCB has "suddenly" run out of some of their range of SMD mosfets.
I have no idea how this happened ;)
https://media.mstdn.social/media_attachments/files/116/970/834/326/693/332/original/901e987c8abe21c8.jpg

2026-07-20 14:41:02 UTC

I need to get a medical bracelet with the name of the prime minister on it, incase I have an accident and the paramedics ask me.

2026-07-19 16:52:21 UTC

Sad to have to leave #emfcamp slightly early.
But, what an event... way too much to put in a post.
Thanks to all of the organisers, speakers, workshoppers, installationers, network, power, toilet/shower and nullmakers? for putting on another superb event.
And thanks to all the people who came to @npub176v…gcnr at the #nightmarke and workshop.
Hopefully see you again in 20 to 25 months :)
https://media.mstdn.social/media_attachments/files/116/947/668/604/383/038/original/8f893b1a55872b38.jpg

2026-07-19 01:24:24 UTC

When your process has stopped, but the input buffer is still accepting data.
#emfcamp The Robot Arms.
https://media.mstdn.social/media_attachments/files/116/944/019/265/375/268/original/bdc7e37d5946cc4c.jpg

2026-07-17 17:23:58 UTC

Orphaned Sauces free with every order :)
@npub176v…gcnr at #emfcamp #nightmarket
https://media.mstdn.social/media_attachments/files/116/936/472/373/578/875/original/ba116369bea8291f.jpg

2026-06-22 12:30:22 UTC

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We have Larry in the Prime Ministers office. He has outlasted too many PM's to count now.
https://www.gov.uk/government/history/10-downing-street#larry-chief-mouser-to-the-cabinet-office

2026-06-22 11:58:07 UTC

BBC's advice on keeping cool. "Wear loose cloths and eat cucumber"
Not sure what people were doing with cucumbers before, but no, stop that...

2026-06-20 22:56:35 UTC

For the #solstice #Stonehenge in HD
https://media.mstdn.social/media_attachments/files/116/784/899/075/124/468/original/ba5bb354b824d6e1.jpg

2026-06-11 09:54:53 UTC

Pubs shut, so I'm waiting for a tram.
https://media.mstdn.social/media_attachments/files/116/730/862/015/101/662/original/5a0267be1058085b.jpg
https://media.mstdn.social/media_attachments/files/116/730/863/098/578/378/original/fabcb74b8b131169.jpg

2026-05-23 12:03:13 UTC

Google, where TF do you think web content comes from?
It certainty isn't AI
Give it a year and your useless slop search will be out of date and useless with no new content if you don't support your sources.
Web creators.

2026-05-19 09:58:28 UTC

Thanks Royal Mail, Its good to know what all systems are operational, now, If you could actually serve me some page content, that would be great.
https://media.mstdn.social/media_attachments/files/116/600/640/823/514/163/original/2753e3dd2a2c52fb.jpg

2026-03-28 10:59:39 UTC

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19" ?

2026-03-27 14:53:35 UTC

The circuit for this flip flop is entirely messed up.
Its a complete lottery which signal is which.
"It could be Q"...

2026-03-10 07:54:36 UTC

What is your favorite 4000 series CMOS chip ?

2026-02-23 11:47:19 UTC

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Yes i found that with SD cards. :)
https://media.mstdn.social/media_attachments/files/116/119/777/120/603/901/original/cc4c0de736a97ef0.jpg

2026-02-23 11:27:44 UTC

Ah, thats what's wrong with this SSD, there is a sticker over the write protect hole. :)
https://media.mstdn.social/media_attachments/files/116/119/697/231/243/272/original/3a96b8d317685ec0.jpg

2026-02-18 16:38:47 UTC

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https://social.makerforums.info/@clolsonus/116092609245651690
#note1076…4pe4

2026-02-15 15:24:20 UTC

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I'm I the only one who wants him to move out of the way, so I can see the drives better ?

2026-02-01 13:31:59 UTC

Google advertising Ai to kids ?
https://media.mstdn.social/media_attachments/files/115/995/617/035/038/456/original/0c97910fb808867b.jpg

2026-01-25 13:43:59 UTC

No matter how cold it is, they have to dive into the cold muddy puddles.
#GermanShepherds #SwissShepherd #ShepherdHuskey #dogs #dogsofmastodon #dogstodon
https://media.mstdn.social/media_attachments/files/115/956/018/025/932/143/original/8d4260b890d61238.jpg

2026-01-16 12:31:56 UTC

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I trained on TXE2 and TXE4, they were the future. Then System X came and destroyed the lot :)

2026-01-15 15:09:08 UTC

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Are you at the a3 laser engraved complaint letter stage yet ?

2026-01-06 16:13:37 UTC

Please can companies go back to just selling stuff. I don't want to enter in to a contract, I don't want reoccurring charges, or an EULA. I don't want to sign my life's data away. I don't want insurance, protection from the dark web or contact with any of your "Partners". I don't want it delivering by a chain of 8 companies. I want it to work, and I want a human to speak to if it doesn't.
Why TF is it so difficult to just buy things.

2026-01-05 14:12:29 UTC

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Not since they got the antivirus.

2025-12-20 23:06:11 UTC

Which will get the most votes?

2025-12-19 16:53:49 UTC

But there can't be any issue with a national ID card system, It will be 100% secure.
https://www.bbc.co.uk/news/articles/cj4qpwprw9vo

2025-12-14 13:32:02 UTC

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I see what you mean, but there was a post office there, so i suspect it's the support that isn't in it's original state not the sign. saying that, there are too many holes. 🤔

2025-12-14 13:26:07 UTC

Local anacronism.
There hasn't been a post office here for at least 50 years.
I walk past this regularly, only spotted it today.
https://media.mstdn.social/media_attachments/files/115/718/137/382/936/343/original/1410fa899b47afe9.jpg

2025-11-22 07:49:15 UTC

AI is a thinking aid for the hard of thinking.
When the AI bubble bursts we must be ready to support the thinking impaired with tools to let them continue as normaly as possible in society.
And provide thinking support animals.
Annoyingly, there will be no money left for this from the people that have forced AI on them, and they will probably not have a job to fund their own rehabilitation.

2025-11-12 18:27:41 UTC

This literally makes no cents.
https://www.bbc.co.uk/news/articles/cq8392vx8plo

2025-11-01 17:34:43 UTC

Been to see a clock that pulls its trousers down too. On Southwold pier.
https://media.mstdn.social/media_attachments/files/115/475/633/223/423/508/original/b74d82944edffb87.jpg
https://media.mstdn.social/media_attachments/files/115/475/633/827/058/218/original/74887b8607e2a6b0.jpg

2025-10-25 13:02:17 UTC

Dont often do #caturday , but for those who celebrate .
https://media.mstdn.social/media_attachments/files/115/434/932/345/317/774/original/9cda0ca51bc4c916.jpg

2025-10-11 16:28:24 UTC

Made for reasons i'm not going into...
https://media.mstdn.social/media_attachments/files/115/356/468/664/991/466/original/302769194390f7d6.jpg

2025-10-10 13:34:31 UTC

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My only issue with using it for 15+ years (in one form or another ) is AVOID word art :)
Excel formatting, other than basic cells, OK, good luck...

2025-09-08 19:55:00 UTC

2nd of to nights fixes. A 139 year old electrotherapy machine.
Three problems, a brush wasn't contacting the rotor (bent back into shape). The handles were suffering from corrosion (cleaned), and the horseshoe magnet had lost most of its power(see 2nd image).
Works well now... no wonder they were nervous :)
https://media.mstdn.social/media_attachments/files/115/170/413/793/594/526/original/8e09caded6e8c21a.jpg
https://media.mstdn.social/media_attachments/files/115/170/414/732/667/542/original/c07bfa61e8863d49.jpg

2025-09-08 12:22:26 UTC

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Or one really heavy person.

2025-08-31 14:01:52 UTC

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since there is no flag pole, you cant tell, it could be just from the other side .

2025-08-30 18:12:02 UTC

Gaussfest, and an electrical day in London on the 7th September (Next Sunday) @ The London Museum of Water and Steam (Brentford)
https://www.extremeelectronics.co.uk/the-gaussfest/
High voltage, tesla coils, electrostatic machine demonstrations and a Victorian/Edwardian pumping station to look around, plus a chance of seeing a working mercury rectifier(s)
I can't think of a better day out :)
Please retoot for reach.
Tickets https://lmws.digitickets.co.uk/event-tickets/68513?catID=65283&
https://media.mstdn.social/media_attachments/files/115/119/054/968/011/780/original/d8ffb1946d7201e8.jpg

2025-08-29 21:41:45 UTC

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You may find this useful for bat free testing. https://github.com/ExtremeElectronics/AttaHell

2025-08-09 21:13:41 UTC

Just need to rewind my music collection, and I can start picking the music for the coil.
https://media.mstdn.social/media_attachments/files/115/000/866/851/248/639/original/2c9442a8433f0dcb.jpg

2025-08-09 19:06:30 UTC

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not just Meta, none of them respect any content any more. No point in robots.txt. Will not rate limit what so ever. They all chop and change ips and user agents to evade limiting.
Regularly kills smaller servers dead, then move on. (If your lucky) they are trashing the Web for small hosts.

2025-08-01 14:08:17 UTC

OK Massed brains of Mastodon.
I'm looking for music with electrical, high voltage, sparks and arc referancs. Ideally in the title or commonly known lyrics, not in the band or artist name) oblique or pun references positively accepted. e.g Joan of arc, flash Gordon, Electric Avenue, tesla girls etc...
Go...
Reboots welcomed.

2025-07-15 10:18:32 UTC

In the last few years has auto complete got

2025-07-13 10:36:20 UTC

Validate your mastodon account by
Posting a picture of a shark or elephant stuffie.
Talking about #gravy
Installing Linux instead of "anything else"
Detailing in depth why AI doesn't work.
Posting 20 photos of your dog or cat.
Adding ALT text to all pictures.
Fed verse chick may not respond.

2025-06-13 11:56:38 UTC

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It gives no sense of scale, until you think about the radius of the sun.
They are STAGGERINGLY HUGE !

2025-06-10 13:33:28 UTC

Back up your 2fa keys, or add a second method.
Do it now, before your phone dies/breaks/is stolen.
That's it that's the post.

2025-06-08 12:22:18 UTC

If you are in a queue and get to the counter without knowing what you want, you have to go the back of the queue.
Harsh, but it's the only way they will learn.

2025-06-05 18:04:49 UTC

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have you tried running away ?

2025-06-03 12:27:20 UTC

I have found my deodorant (not sure of source, passed via Facebook (not mine) so can't attribute)
https://media.mstdn.social/media_attachments/files/114/619/417/885/703/258/original/24509cff2b47fe39.jpg

2025-05-10 19:57:58 UTC

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Maybe it will start if you can get it to turn over... "Hold my beer"

2025-04-26 10:47:06 UTC

The Gaussfest is homeless !
We have been running the Nottingham Gaussfest for 24 years. Our current hosts are unfortunately no longer able to host us for this year. So we are looking for a new host.
Details of our requirements are here https://www.extremeelectronics.co.uk/teslathon-tesla-workshoptalk-venues-needed/
Ideally we would like to support a museum, public or charity space.
Ideally we would like a large area, but smaller venues can be accommodated, as can science demonstrations as part of an other event.
Please retoot for visibility.
https://media.mstdn.social/media_attachments/files/114/403/860/974/044/254/original/75fd0425a084a3f3.jpg

2025-04-25 14:07:03 UTC

Nice day for a long walk with the dog :)
#dogs #dogsofmastodon #dogstodon #GermanShepard
https://media.mstdn.social/media_attachments/files/114/398/983/402/095/003/original/7c889e534cc16ec5.jpg

2025-04-15 07:58:05 UTC

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Dyson Spheres are impossible.
No one can afford that many vacuum cleaners.

2025-04-10 19:58:53 UTC

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based on a rubber chicken, ideal :)

2025-04-10 13:41:48 UTC

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Its my "temp" folder, every time I need space to dump some stuff (usually individual items) it goes in there, before moving elsewhere. Item goes in, look for it from another app, no there. Go in via explorer, does the "scanning" thing for a "month" sometimes it reappears some time not.
I have this on two machines one win 10 one win 11.

2025-04-10 13:38:18 UTC

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Do you have the total stop in enumerating a directory that has been on your machine for months, but has grown to over 500 items.
Move the directory away, then move it back. and instant enumeration again.
for about a month. Ridiculous.

2025-04-06 14:51:44 UTC

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I used to run an Apache "meeting" server, It ran with literally anything. most of the features of teams too.
The server itself only had 2G ram :) supported 20+ concurrent users.

2025-04-06 14:43:49 UTC

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madness isn't it...

2025-04-06 14:42:57 UTC

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then work needs to provide you with a laptop.
Or MS needs to make teams work on the Web (better?)

2025-04-06 14:40:53 UTC

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many people find mastodon and a new TV difficult to use. I find new washing maxhines difficult to use. Not an argument. Each to their own.

2025-04-06 09:51:24 UTC

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I believe win10 will work for a long time yet, I suspect that 365 will die on win 10, "for reasons"
So migrate to libre office on win 10 ASAP.

2025-04-06 09:19:28 UTC

Re Microsoft win 10 machines.
Don't believe Microsoft
"because they can’t be upgraded to a supported OS there will not be the normal secondary market for those buying new hardware. This means there’s no boon for charities or other good causes, and instead this is a recycling or landfill choice.
This is criminal.
Recycle to Linux.

2025-03-29 10:49:04 UTC

Something I'll never understand, why you need to "dress up" to go shopping.

2025-03-16 17:32:54 UTC

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Ok, Use every pot, pan, plate and all of the cooking spoons and knives. If you are cooking, you CANT be expected to wash up.

2025-03-16 17:09:09 UTC

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To ensure there isn't a repeat of this, do it REALLY badly.

2025-03-07 07:19:39 UTC

I've had an influx of followers using the default profile pic just recently.
Welcome to mastodon.
Quick tip, you will get much better results from mastodon if you change your profile pic to literally anything else.
https://media.mstdn.social/media_attachments/files/114/119/930/543/345/809/original/a9db5748c82a1403.jpg

2025-02-18 06:54:46 UTC

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yes the Pico Cray https://www.extremeelectronics.co.uk/other-2/pico-cray-small-scale-distributed-computing/

2025-02-17 20:47:45 UTC

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Itll be fine :)
https://media.mstdn.social/media_attachments/files/114/021/187/369/725/347/original/629fcb492abf9e78.jpg
https://media.mstdn.social/media_attachments/files/114/021/207/305/700/383/original/731f9f89ee266df9.jpg

2025-02-11 09:28:02 UTC

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2k and a cassette tape drive, you have no idea how lucky you were :)

2025-02-10 14:27:42 UTC

Just added 11Tb of space to my PC.
I cant imagine trying to tell my 12yo self this.
At that age, I thought a C90 could hold all the storage I'd ever need.

2025-02-07 12:00:36 UTC

As AI is on the increase, to be able to compete without actually using AI, from now on all my answers to questions will be long, wordy, not based on any knowledge or truth and will only sound correct.
If an answer is actually correct, please assume that this is purely a coincidence.

2025-01-31 15:10:01 UTC

Adobe reader has enabled the AI "leak your documents to their cloud feature" with ZERO warning.
Great if you look at legal documents or financial documents (invoices & bank statements especially) that SHOULD be private.
Turning off AI assistant in Adobe reader
Three Bars Menu -> Preferences
https://media.mstdn.social/media_attachments/files/113/923/587/951/017/045/original/d1ad9d59e2ca86f3.jpg

2025-01-19 13:55:46 UTC

Microsoft 365 copilot.
In my head...
https://media.mstdn.social/media_attachments/files/113/855/357/291/568/060/original/0f539c8ad3dc61e1.jpg

2025-01-08 17:42:56 UTC

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100% with you on this, keep up the good work.

2024-12-04 13:14:44 UTC

In a move that will supprise no-one, Microsoft has stopped shipping Outlook Classic with new PC's but even after years of development, they don't support email from any small email players.
So you have to install an old 365 separately to get Outlook Classic back.
This page (sorry its an advert for PC world) has a solution that works. (MSFTs solutions don't) https://www.pcworld.com/article/2469158/how-to-download-the-old-classic-outlook-app.html
https://media.mstdn.social/media_attachments/files/113/594/708/713/159/089/original/d973953e1247428f.jpg

2024-12-02 13:00:50 UTC

I've just been told that "our customers like the AI chat bot" I suggested that was "unlikely" [or words to that effect]. So

2024-11-24 14:06:08 UTC

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On mine, if you pull down the URL bar reappears.

2024-10-24 14:49:53 UTC

I'm declaring my house part of it's own time zone that is 1.10 minutes in front of BST.
It is therefore time to stop working.

2024-10-19 14:45:48 UTC

Needed 2 batteries for my calculator. £4.50 for a pair, or £3.75 for 50 !
https://media.mstdn.social/media_attachments/files/113/334/618/185/176/554/original/80d65936bf1f62be.jpg

2024-10-01 10:52:24 UTC

Electricians are now 2nd to bottom for cat5 cabling.
CCTV engineers have stolen 1st place.
https://media.mstdn.social/media_attachments/files/113/231/781/060/634/059/original/6f103022ec307f0d.jpg

2024-09-27 21:16:42 UTC

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11 busses on top of each other, or 11 busses side by side or 11 busses end to end /

2024-09-24 20:07:28 UTC

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How would we know the difference ?

2024-09-02 17:41:21 UTC

Nottingham Gaussfest 2024
Demonstrations of Tesla coils and many other types of High Voltage equipment
Nottingham 2nd November
Details https://www.extremeelectronics.co.uk/nottingham-gaussfest/
and a Victorian Beam Engine
Registration Essential.
#highvoltage
#teslaCoils
#teslacoil
#steampunk
#wimshurst
#vandegraff
#electronics
#lightning
https://media.mstdn.social/media_attachments/files/113/069/175/382/035/389/original/55191ba2fa1c371a.jpg

2024-08-26 15:02:10 UTC

New Microsoft Terms of use.
"We don’t claim ownership of Your Content. Your Content remains yours and you are responsible for it."
Also
"to protect you and the Services and to improve Microsoft products and services, you grant Microsoft a worldwide and royalty free intellectual property licence to use Your Content, for example, to make copies of, retain, transmit, reformat, distribute via communication tools and display Your Content on the Services."
1/2

2024-08-26 14:37:23 UTC

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100% agree, plus you can get older versions to match your ageing OS. Last year, I installed it on a windows 2000 box :)

2024-08-26 14:26:33 UTC

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winscp (yes even with that name) or Filezilla

2024-08-24 15:09:28 UTC

Today's lesson in C. Learning (again) the difference between << and >>

2024-08-24 09:54:58 UTC

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will Amazon echo start doing voice ads next ?

2024-08-24 09:47:51 UTC

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and people wonder why I boycott Amazon.

2024-08-21 18:13:31 UTC

Off to #WutheringBytes in #HebdenBridge on Friday for the Festival day. (only)
Anyone I know going to be there ?

2024-08-20 11:13:26 UTC

Nottingham Gaussfest
Demonstrations of Tesla coils and many other types of High Voltage equipment
Nottingham 2nd November
Details https://www.extremeelectronics.co.uk/nottingham-gaussfest/
and a Victorian Beam Engine
Registration Essential.
#highvoltage #teslaCoils #teslacoil #steampunk #wimshurst #vandegraff #electronics #lightning
https://media.mstdn.social/media_attachments/files/112/994/034/619/940/591/original/be283eda890938ed.png

2024-08-17 17:15:25 UTC

Neo-pixel and SPO256AL2 test, from an MBASIC program running on CPM/80 on ROMWBW on a Pi Pico emulating a Z80 ;)
https://github.com/ExtremeElectronics/RC2040-ROMWBW
#RC2040 #RetroComputing #cpm #RaspberryPi #pico
https://media.mstdn.social/media_attachments/files/112/978/467/840/594/414/original/c1cef629ecf4d868.mp4

2024-08-15 22:25:00 UTC

Run RomWBW (z80 emulated CPM) from a PI Pico using RC2040 PCB http://extkits.co.uk/rc2040
Git https://github.com/ExtremeElectronics/RC2040-ROMWBW

2024-08-13 19:17:06 UTC

Rom WBW running on a Pi Pico ( the old type )
Just an experiment at the moment, I'm not proud of some of the bodges. Needed to fit 512K Ram and 512K ROM into a pico.
Runs CPM though, although there must be some (a lot of) broken stuff.
Need to experiment further into selecting the ram pages in the build of ROMWBW
https://media.mstdn.social/media_attachments/files/112/956/301/863/158/590/original/48e3d3f8a3137e77.jpg

2024-08-13 18:05:57 UTC

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Ok, its not my code, reverted to SDK 1.5.1
all compile and work fine.
Maybe I'll try again at SDK 2.0.1 :)
Or with a separate machine for RP2350 stuff.

2024-08-13 16:46:08 UTC

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Not a single thing I've written for rp2040 works with SDK2, but the examples seam to run. Biggest issue is with spi can't find any solutions on line and I don't have the time to debug.
So, it could be my code, but...

2024-08-13 16:22:18 UTC

Too much is broken on the Pico SDK2 I'm looking at reinstalling 1.5.1 and wait for the edge to stop bleeding.

2024-08-12 10:34:28 UTC

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Has it taken cyanide?

2024-08-09 14:44:09 UTC

Yay,
Pico2 pinout via @npub1jjf…jh0u 's https://pico2.pinout.xyz/
I was only joking that it was missing :)

2024-08-09 14:34:16 UTC

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Your design, or purchased ?