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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%! 

« Netgear Arlo Wireless Battery-Powered Camera System | Main | Magnetic USB Cables »

120V 60Hz from a 230V 50Hz power supply

I really wanted to bring you something more interesting - but a number of equipment failures and DOA devices has resulted in me making a video about something that I'll be using in the future to attempt to more interesting videos than this one. 

The problem is as follows - I need a 120V 60Hz power supply to make old devices imported from the US work properly, however I'm in the UK, where the power supply is 230V 50Hz.

I expected that you could buy a simple all-in-one converter that could turn 230V 50Hz into 120V 60Hz, but unfortunately it's not as easy as that (or at least I couldn't find something that worked that way).

In the video below you can see my solution to this problem. It's definitely not elegant...but it works.

Purchasing (UK links)

5-15V DC Variable power supply is the PS201ADJT and can be bought here 

12V DC to AC 120V 60Hz Power Inverter was imported from B&H Photo in the US


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Reader Comments (8)

Geez, mate. You gave me a scare. For a minute there I thought you had bought a modified square wave inverter to power your audio gear. When I first saw the graph on the thing my heart stopped.

August 21, 2016 | Unregistered Commentermesh

The first example wire recording you played back sounds like it is a meeting from the town of Glenwood Springs, Colorado, USA. Any chance I can get an mp3 of the recording at correct speed? I live near there and know a few people in the local government and library who might be interested in an archive. If nothing else, as someone who is interested in local history I would really like to hear it, along with any meta data (recording dates, organization, etc) you might have. I know you're not an archivist, but any other recordings you might have from the same geographical location might be good too.

August 21, 2016 | Unregistered CommenterReadyKilowatt

It was a recording split over two wire reels of the Glendale Lions AGM from 1951 - I had problems dubbing it to an MP3 with any level of quality and the wires repeatedly snapped - the link below takes you to a dub of what I could salvage from the first wire (this wire totally self destructed after this play).

I emailed the Glendale Lions website offering to send them a copy of the recording but received no reply.

The second wire seen in yesterday's video hasn’t yet been recorded to an MP3 - it has already snapped into two and since the Lions were not interested I have made no effort to digitise this one.

August 21, 2016 | Registered CommenterTechmoan

It seems that a Cyberpower brand UPS with its "pure sine" output might somehow also achieve this goal. It generates its own AC clocked at 60hz, but the photo of the unit's input shows 120v 50hz/60hz so it doesn't care about the input HZ, perhaps there's a cheap way to step down the UK mains voltage and use a nice UPS:

August 22, 2016 | Unregistered CommenterDavid Sanborn

It would appear that there is no consumer version of a combination an AC voltage and frequency converter. I was able to find a bench converter, the Adaptive Power Systems FC200, that can be adjusted from 0-300v AC and 45-500hz. However, the site does not list a price and and has links to rental services, suggesting that the unit is not cheap.

It seems that your inelegant AC to DC to AC setup is actually the only cont effective way to go.

August 23, 2016 | Unregistered CommenterLuke DeGraw

i also have vintage USA gear that i cant calibrate i'm thinking of buying this what do you think' have you got one?? please let me know your thoughts would you buy one and review it?? before i spend my hard earned.
love your channel all the best.

August 31, 2018 | Unregistered Commenterjon

It seems like it might work - although I’m not sure whether they are still on sale - the last one they had on ebay was sold in 2016.

If you do get in touch with them I’d ask about the maximum amps it can handle as I’d imagine it’s not a lot if it’s just designed for clippers.

Thanks for the link.

August 31, 2018 | Registered CommenterTechmoan

It is also suitable for other small electronic motorized or clock devices that rely on an American electrical frequency of 60 hertz. It eliminates malfunction issues when these types of devices are used outside of the United States.

the above is from the seller i'm going to take a chance i will let you know how i get on
here is the seller's ebay id
and thanks for the reply.

August 31, 2018 | Unregistered Commenterjon

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