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Techmoan Merchandise at TeeSpring


Pick of the Camera Reviews

(Click the pictures for reviews & links) 


Yi 2 - Best Budget 4K 

Gitup Git2 (My Pick)

Xiaomi Yi


DR02 D - Best Budget Dual Cam

Yi Ultra 2.7K
Mobius (also works as a Dashcam)
Polaroid Cube+
Drift Ghost X

My favourite USB battery power Pack

This is the excellent USB power pack I use when I travel.

2 x 2.1amp outputs. 8400mAh capacity.

Two digit Led display shows battery level


What SD CARD should I buy?

If you want an SD Card for your camera - these are the ones I use and recommend. 

I'd strongly recommend not to buy any SD cards off ebay - I've heard about too many issues with counterfeit cards - often sold on by unwitting resellers. My inbox regularly gets messages from people who bought a £150 camera then cheaped out and bought a £3 memory card on ebay - Then when it doesn't worth they blame the camera! It doesn't make any sense. Good memory is cheaper than it's ever been - see the links above.

A lot of HD cameras will not work properly with cards larger than 32GB (cards over 32GB are usually SDXC rather than the SDHC standard used by 32GB cards. SDXC cards use the ex-FAT system rather than FAT32 - in short they are a different standard). - so don't just buy the biggest card you can afford - read the specs in the manual to see what it accepts.


RECOMMENDED CARDS (for action cams - see dashcams below)

CLASS 10 UHS-1 CARDS (For HD Cameras)


U3 CARD (For 4K cameras)




The SD card in a dashcam is re-written over, more frequently than in other types of cameras. Some manufacturers void their guarantee if an SD card was used in a dashcam. So, no surprise, there are special High Endurance SD cards made just for's some.


VERY IMPORTANT. These links take you to the product, however Amazon have three different ways of selling. There's Amazon Direct - This means that you are only dealing with Amazon themselves, then there's other sellers that use Amazon's facilities - these show as Fulfilled By Amazon and finally there's Market Place sellers that advertise on Amazon, but operate independently.  I strongly recommend that you only use the first...the Amazon Direct - Sold By Amazon option. Even if it appears that you are paying a couple of £/$ more it is more than likely you are comparing the price of a real item against the price of a fake.

To give you an idea of the extent of the fake goods problem. In a 2016 survey by Apple - 90% of the 'Apple' chargers sold through Amazon - using the other the two methods..which includes the "Fulfilled by Amazon" option -  were found to be counterfeit....90%! 

« Polaroid Cube Plus - Mini Camera, Big Performance | Main | Ring WiFi Video Doorbell Review »

Auto-Reverse: The Hard Way

In 1972 to avoid their customers the inconvenience of getting out of a chair to turn a cassette tape over manually, Akai developed Invert-O-Matic. This was an amazingly complicated electro-mechanical auto-reverse system constructed from hundreds of perfectly syncronised belts, wheels, levers, switches and sensors. It really is a joy to watch it in action - and you can do so in the video below. 

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Reader Comments (15)

Dear Mat and fellow 'techies', techmoanies???

What a cracking video. When I studied engineering many years ago, a couple of my lecturers were always going on about the 'beauty' of well designed engineering; form and function and all that stuff. This cassette turner was a great example of that with a design of 'over engineering' a solution to a problem that was at best - marginal.

Never-the-less, there was a certain elegance to it, especially with a little help of the Blue Danube.

Mat, another excellent job. I hope there's still enough retro tech around for you to get your teeth into. A pin ball machine?


March 4, 2016 | Unregistered CommenterChris L

Genius, I was screaming at the monitor to show it in slow-mo.
Thanks, I love this site and your videos are just brilliant.
Long may they continue.

Where do you actually start to look for a 44 year old brand new cassette deck anyway ?

March 6, 2016 | Unregistered CommenterSteve

I spend hours on ebay. It has a lot of power-tools that many people don't use such as setting up saved searches with alerts as well as a curating a list of favourite sellers. Learning foreign names for things helps as well e.g. "tonbandmaschine"

March 6, 2016 | Registered CommenterTechmoan

Beautiful photography on this one!!!

March 16, 2016 | Unregistered CommenterC d

Hi. I have one of these and an AKAI CS-50, that shares a very close mechanics (actually a simplified one), has a built-in 2x4W power amplifier but lacks Dolby and noise limiter. Mechanics for both the GXC-65D and CS-50 is somehow hard to fix. As Simon asked in his post, I had a hard time disassembling and fixing the CS-50 because someone tried do remove the tape inside of it by brute force. Mechanics was jammed and some metal parts were bent. It took me two weekends to put it back together, though.

September 9, 2016 | Unregistered CommenterLuiz C. Vieira

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