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Extreme Electronics

@extelec

Tesla coils - HV experiments - 3D printing - Programming - Kits via @ExtKits - Gaussfest Organiser - Electronics and shed science. - Retro computing https://www.extremeelectronics.co.uk Playing with forces I don't understand.

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18.10.2024
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Latest posts by Extreme Electronics @extelec

A suitcase full of pcbs and Gubbins

A suitcase full of pcbs and Gubbins

Packed ready for the #camjam tomorrow.

Bringing mostly the new Pi Pico related stuff to show, but due to travel arrangements, I won't be selling at the jam, althouh do have free UK postage from the website, when you order online.

If you see me there, please say hello.

extkits.co.uk

#RaspberryPi

27.02.2026 13:59 πŸ‘ 3 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
The bottom left of the image shows a Pico RomWBW computer in a brown wooden case. The output from it is shown on the screen in the background. It is just about to boot into CP/M.

The bottom left of the image shows a Pico RomWBW computer in a brown wooden case. The output from it is shown on the screen in the background. It is just about to boot into CP/M.

New from me: Building a Pico RomWBW

z80.timholyoake.uk/building-a-p...

07.01.2026 15:10 πŸ‘ 5 πŸ” 5 πŸ’¬ 0 πŸ“Œ 0
Luminiferous Theremin Kit - Extreme Kits The Luminiferous Theremin Kit is a full featured audio synthesiser, musical instrument, played with no contact to the musical instrument whatsoever.

Happy new year.

Over the Christmas period, I was VERY busy.

Many product lines were sold out, Thankyou

I'm slowly restocking, and the first back in stock is the Theremin kit...

extkits.co.uk/product/lumi...

02.01.2026 20:14 πŸ‘ 3 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
Bernard the fly on an extreme kits business card

Bernard the fly on an extreme kits business card

This is Bernard, or Ber for short. Tomorrow is his birthday. To celebrate we are continuing our Black Fly day sale.

For FlyBer Monday.

Enter "Black Fly day" at the checkout for 10% off all our products. Last day tomorrow.

extkits.co.uk

30.11.2025 19:18 πŸ‘ 1 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
A small Van de Graff with a fly at the base and a shiny metal dome.

A small Van de Graff with a fly at the base and a shiny metal dome.

Grab a mini Van De Graff kit In our "Black fly day" sale" 10% off, if you use BLACK FLY DAY code at the checkout.

We don't do #BlackFriday until Dec 1st.

extkits.co.uk/product/van-...

28.11.2025 21:32 πŸ‘ 0 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
Small box with silk screened front panel rows of buttons, leds and switches extremekits and RomWBW logos. In a polished wooden case, with a huge black fly on top. Because Black fly day is really a thing, well its as much of a thing as black Friday is in the uk.

Small box with silk screened front panel rows of buttons, leds and switches extremekits and RomWBW logos. In a polished wooden case, with a huge black fly on top. Because Black fly day is really a thing, well its as much of a thing as black Friday is in the uk.

Pico RomWBW computer kits back in stock. You can now order with a wooden case as a single item, saving you £££s. Plus (minus ?) the 10% off Black fly day offer (use the code BLACK FLY DAY) at the checkout.

ExtKits doesn't do #BlackFriday.

extkits.co.uk/product/pico...

26.11.2025 16:54 πŸ‘ 1 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
Extreme kits logo and an acrylic black fly

Extreme kits logo and an acrylic black fly

If you've been following Extreme kits for a while you will realise that we don't do black Friday. But, to celebrate one of our software bugs becoming sentient, this year we will be doing "BLACK FLY DAY"

10% off your order at extkits.co.uk if you use "BLACK FLY DAY" at the checkout, until 1st Dec.

24.11.2025 21:15 πŸ‘ 1 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
Aqua Horological Tintinnabulator

Notts Emmet clock i  victoria centre. 

TheΒ Aqua Horological TintinnabulatorΒ (also known as theΒ Victoria Centre Clock,Β Emett Clock,[1]Β orΒ The Time Fountain) is a 'water-powered'Β clock. From 1973 to 2014 it was installed on the ground floor at theΒ Victoria CentreΒ inΒ Nottingham, England. In 2015 it was reinstalled in the shopping centre on the first floor.

Aqua Horological Tintinnabulator Notts Emmet clock i victoria centre. TheΒ Aqua Horological TintinnabulatorΒ (also known as theΒ Victoria Centre Clock,Β Emett Clock,[1]Β orΒ The Time Fountain) is a 'water-powered'Β clock. From 1973 to 2014 it was installed on the ground floor at theΒ Victoria CentreΒ inΒ Nottingham, England. In 2015 it was reinstalled in the shopping centre on the first floor.

Great Notts walkabout this evening.

Went to see the Aqua Horological Tintinnabulator

Then a few pints in a local pub.
@drlucyrogers.com

18.11.2025 21:24 πŸ‘ 11 πŸ” 2 πŸ’¬ 1 πŸ“Œ 0

We have been spoiled by Strickfaden. Modern Mad scientist decor doesn’t come close.

18.11.2025 12:24 πŸ‘ 3 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
Small desktop battery powered Wimshurst machine. sparking between two silver balls on wire above the machine. Two acrylic disks spinning on an acrylic chassis below. against a white graph paper checked background.

Small desktop battery powered Wimshurst machine. sparking between two silver balls on wire above the machine. Two acrylic disks spinning on an acrylic chassis below. against a white graph paper checked background.

Mini Wimshurst kits back in stock

30000V of whirly disk based #science on your desktop, but still safe for kids.

extkits.co.uk/product/mini...

16.11.2025 16:18 πŸ‘ 6 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
RP2350 RomWBW Bus kit. 10 leds, 8 switches and an OLED display on two blue PCB's with a 40way connector.

RP2350 RomWBW Bus kit. 10 leds, 8 switches and an OLED display on two blue PCB's with a 40way connector.

RomWBW Bus kits now available.

All the features of the Pico2 RomWBW kit PLUS

an OLED display emulating a 2 line LCD and a full #RC2014 IO Bus, so you can run RC2014 peripherals. Not that you really need to as you have SD disks, Speech synth, 8 bit LEDs / switches on the front panel.

15.11.2025 20:35 πŸ‘ 3 πŸ” 2 πŸ’¬ 1 πŸ“Œ 0

Available here extkits.co.uk/product/rp23...

#RetroComputing

15.11.2025 20:38 πŸ‘ 1 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
RP2350 RomWBW Bus kit. 10 leds, 8 switches and an OLED display on two blue PCB's with a 40way connector.

RP2350 RomWBW Bus kit. 10 leds, 8 switches and an OLED display on two blue PCB's with a 40way connector.

a Neo pixel driver. Running emulated Z80 CPM via #ROMWBW from an onboard RP2350

AND it can be directly plugged into a RC2014 backplane.

#retrocomputing

15.11.2025 20:37 πŸ‘ 1 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0
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Rainbow time! #GiganticUnicorn

01.06.2025 20:46 πŸ‘ 11 πŸ” 1 πŸ’¬ 2 πŸ“Œ 0

I always carry a barge pole with me, just in case I want to not touch something I don't like with it.

28.10.2025 10:28 πŸ‘ 234 πŸ” 32 πŸ’¬ 20 πŸ“Œ 5
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Rise of the Mammals. The cover project from my new book "Making Paper Automata" The project comes as a pdf ready to print out onto thin card. Find out more here www.robives.com/project/rotm/ #automata #dinosaur

07.04.2025 14:56 πŸ‘ 54 πŸ” 22 πŸ’¬ 5 πŸ“Œ 5
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Introducing the most extra 3D printed necklace you've ever seen. 🀣 Contains 3 motors, over a pound of sterling silver, and a whole lot of my blood, sweat and tears.

Full build video now live on my YouTube channel!

youtu.be/L6DcvBOA1pQ

22.10.2025 13:26 πŸ‘ 68 πŸ” 13 πŸ’¬ 5 πŸ“Œ 0
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Latest developments with my Orton 3CX. #RC2014

22.10.2025 16:27 πŸ‘ 4 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

For the first year in ages where this doesn't clash with (or is near to) the Gaussfest. It clashes with a dog event.

Have a great time and poat loads of photos.

20.10.2025 20:41 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Post image Post image Post image

I will be at Assemble, Darby on Saturday, showing off the @pimoroni.com Giant Unicorn hat and other projects.
#GiganticUnicorn

19.10.2025 23:17 πŸ‘ 8 πŸ” 4 πŸ’¬ 1 πŸ“Œ 0
Preview
Armstrong effect - Wikipedia

Its a similar idea, but with no custard, or heating element.

Just steam, blown through a line of small nozzles.

en.wikipedia.org/wiki/Armstro...

02.10.2025 03:43 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

There is a device that creates high voltage by only using jets of steam. The mad thing about it is the whole boiler and burner needs to be insulated from ground.

Truning it off is a challenge :)

30.09.2025 03:59 πŸ‘ 3 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0
An old green traction engine with a Van der Graaf generator attached

An old green traction engine with a Van der Graaf generator attached

Hey Derek @extelec.bsky.social seen this? A steam powered Van der Graaf generator

27.09.2025 23:15 πŸ‘ 4 πŸ” 2 πŸ’¬ 1 πŸ“Œ 0
Preview
Petition: Do not introduce Digital ID cards We demand that the UK Government immediately commits to not introducing a digital ID cards. There are reports that this is being looked at.

There is already a petition in the UK that has passed 453k signatures against digital ID scheme. Please sign and share.
petition.parliament.uk/petitions/73...

25.09.2025 23:06 πŸ‘ 25 πŸ” 25 πŸ’¬ 5 πŸ“Œ 1

I've just got back to Devon. A great day, many thanks to the organisers from me too, and I'm looking forward to building my Wooden RomWBW machine @extelec.bsky.social !

20.09.2025 18:01 πŸ‘ 2 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
Extreme kits table, black table cloth, a number of kits with explanation cards.

Extreme kits table, black table cloth, a number of kits with explanation cards.

Just back from #rc2014 assemble...

Superb day lots of people to talk to and lots of great talks.

Thanks to Spencer @peteronion.bsky.social and @tnmoc.bsky.social for organising.

20.09.2025 17:44 πŸ‘ 9 πŸ” 2 πŸ’¬ 1 πŸ“Œ 0
Making a working Hitch-Hiker's Guide To The Galaxy prop from junk
Making a working Hitch-Hiker's Guide To The Galaxy prop from junk YouTube video by Greig Johnson Making

Following on from my report yesterday about that Hitchhiker’s Guide video, loving this. So many techniques used to create The Guide.

19.09.2025 20:47 πŸ‘ 15 πŸ” 3 πŸ’¬ 0 πŸ“Œ 0

And im still waiting for my potato salad. :)

19.09.2025 07:38 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
First Prototype Robot Arm - MeArm Robotics
First Prototype Robot Arm - MeArm Robotics YouTube video by MeArm Robotics

11 years ago...

youtube.com/shorts/hM8G2...

19.09.2025 07:18 πŸ‘ 4 πŸ” 2 πŸ’¬ 2 πŸ“Œ 0
Preview
RC2014 Assembly β€” The National Museum of Computing This Event has been created In collaboration with RC2014 and Peter Onion, hosted at the TNMOC. Witness the versatility of the RC2014 and similar Z80 kits: A deep dive into community-driven 8-bit proje...

There's still time to book your place at the forthcoming RC2014 event at The National Museum of Computing. It's a chance to meet other RC2014 builders and users, or to learn about RC2014 and similar systems before deciding to buy and build your first one. www.tnmoc.org/events/2025/...

05.09.2025 07:46 πŸ‘ 15 πŸ” 8 πŸ’¬ 2 πŸ“Œ 0