Видео

I like to rescue old computers to see if I can get them working again. This Macintosh LC from 1990 was very broken and badly yellowed. It required quite a few repairs to get it finally to run but it works and looks good as new now! In this video I take you through the repair process. 00:05 EBay Listing 00:29 Unboxing 00:55 Disassembly 01:11 Bad PSU 01:53 Logic Board Recap 04:23 Retro-Brighting ...

In this video I do a quick and simple video output project using only an HDMI cable and 8 resistors, all 270 ohm. All credit to Luke Wren who shared the code and plans on how to build this. The video is not sponsored in any way Useful links Hardware github.com/Wren6991/Pico-DVI-Sock Software github.com/Wren6991/PicoDVI

Building a Pico DVI Sock using surface mount soldering. In this video I take you the process I used to build a DVI sock using solder paste and hot air and a solder stencil. Despite the very fine pitched components it all worked out. Note that I found plugging this into the HDMI input of a monitor works better than plugging into my older monitor with an actual DVI input. 00:00 Introduction 00:49...

The Raspberry Pi Pico does a great job of emulating the BBC Micro. In this video I setup the emulator and play some retro games. All credit to Graham Sanderson @kilograham for the pico port of the B-em project. Awesome job! 00:50 Modifying Pimoroni VGA Demo Board 03:09 Hardware Setup 03:47 Software Setup 05:51 Turning on the BBC Micro and the Pico Emulator 07:10 Lets playing a game 07:44 BBC B ...

Raspberry Pi Pico Reset Button. In this video I solder a Captain Resetti button from Pimoroni onto a Raspberry Pi Pico. I really like these little buttons. You can get them here. shop.pimoroni.com/products/captain-resetti-pico-reset-button If you are wondering what the other thing soldered to this pico is then subscribe to the channel as there is a video coming up on that shortly... This video ...

When overclocking the Raspberry Pi above 300MHz I found the flash memory stopped working. In this video I revisit that issue and show how to keep the flash working no matter the overclock speed. Also I cover dynamic overclocking and the impact of cooling solutions. 00:12 Introduction 00:45 Changes to enable flash to work at high overclocks 01:21 Dynamic overclocking in a single program 01:55 Ov...

420Mhz!!! Warning, your mileage may vary. Overclocking could shorten the life of your Pico, although mine seems fine :-) In this video I show how to set the Pico CPU clock from under-clocking to save power all the way to maximum overclock which for me topped out at 420Mhz!!! Beware however there is a catch... with the maximum overclock your flash memory will stop talking to your pico CPU. This ...

In this video I install a composite video mod, then upgrade the internal RAM to 16K and show off some hi-res gaming awesomeness. 00:00 Introduction 01:42 eBay Auction Fail and EEVBlog link 02:05 Machine Internals 05:21 Composite Video Mod 07:53 16K Internal RAM upgrade 13:45 Quick Keyboard Fix 15:10 Testing RAM 15:44 Lo-Res Graphics 17:43 Hi-Res Graphics Invaders! 18:53 Outro Useful Links EEVBl...

In this video I create a very basic and simple PWM based audio output circuit and take you through the code on how to output recorded WAV files. This is not intended to be the highest quality audio circuit. The main idea is to keep it simple. 00:00 Introduction 00:31 Circuit Diagram 00:56 Building on a Breadboard 01:18 Pico Code Explanation 04:30 Code to covert WAV files to C arrays 05:44 Demo ...

I mislabelled some resisters in the last video so wanted to correct and I was also asked to produce a full schematic for the VGA circuit. So here it is!! Let me know what you want to see in the next video. How about Pico Audio or more details on VGA signals, DACs maybe reduced colours or single colour VGA like a retro green screen using way less outputs. 00:00 Intro 00:36 Schematic in Full 00:4...

Quick update. I made a comment yesterday in the VGA video that the colours were not looking right. Amazingly someone who works on the raspberry pi pico playground project tweeted me to let me know he had created a test_pattern project so I could debug the digital to analog converter!!! I used it and the colours are now perfect. Many thanks to @kilograham5 for uploading the test pattern.

Building VGA output from a Raspberry Pi Pico. The Raspberry Pi Pico is amazing. Sections of the video so you can skip ahead 00:00 Intro 01:06 Pico Setup 03:35 VGA Resistor DAC 08:43 Program and Demo In this video I go through building the VGA output circuit using only resistors. It has a 5 bit DAC on each of the red, green and blue lines which means it should have 32,768 individual colours. In ...

This is my Acorn BBC Model B computer. In this video I show some mods I made to make this computer great to use today. This includes an internal disk drive, VGA output and power supply mod. This video is not sponsored in any way. Warning power supply modifications are dangerous and should be done at your own risk. Micro Men the movie about the creation of the UK computer industry www.imdb.com/t...

In this video I repair a Franklin ACE 100. The Franklin ACE 100 was an Apple II clone first released in 1982. It directly copied the design and also the ROMs from the original Apple II. Apple took the Franklin Computer Corporation to court because of this machine and eventually won. This changed software copyright law and is why today compiled software code is still subject to copyright and not...

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