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Pick of the Camera Reviews

(Click the pictures for reviews & links) 


Yi 2 - Best Budget 4K 

Gitup Git2 (My Pick)

Xiaomi Yi

Dazzne P2


Yi Ultra 2.7K
Mobius (also works as a Dashcam)
Polaroid Cube+
Sena Prism Tube

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%! 


« The Winners of the ACase Superleggera Pro iPhone 5 Cases | Main | iPhone 5 Cases from ACase and Tech21 »

Heads-Up! Here's a HUD that plugs into your car's OBD socket.

It's good to review a category of device that I haven't looked at before, and whilst there probably is no reason why anyone would need a Head Up Display in their car, it's still quite a fun (but quite expensive) gadget.

Concept cars have featured HUDs for years now, but there are some less exotic vehicles already on the market that are fitted with these, most commonly to show the speedo. I'd be interested to find out how the manufacturers resolved the double-image issue that I experienced with this device. I assume that most would use an angled piece of perspex or a reflective sheet…but it's something that I'll need to look into. If anyone reading this has a car with an HUD, please let me know how well it's implimented.

If you do want to purchase the Actisafety ASH 3, it is  for about £90

Technical details abut this review (people might ask - so I'm pre-empting the question)

This was a difficult one to shoot because of all the low light footage. You will notice a lot of blocking and grain in some shots taken inside the garage. The blocking gets added when I render out the finished video from iMovie (it looks fine during editing).  I've tried using different bit rates and formats without any success.  My camera also didn't like focussing on a reflected object on a windscreen in the dark….normally this would be a good thing, but on this occasion, that's exactly what I wanted to do. The cameras used were as follows. The Sony HX100V for the product shots. The moving in-car night footage was shot with the Koonlung Wired Bullet Camera, and the parked-up night footage was an iPhone 5.

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Reader Comments (21)


As a long time subscriber of your youtube channel, thanks for doing the videos!

As for the plastic sheet, would you thing a polarizing sheet instead of the supplied one works? I was just wondering because, polarizing filters are supposed to cut down on reflections in photography. If possible, could you try with a transparent sheet of polarizing film and see if the reflection is cut down?

Thanks for the videos!

November 25, 2012 | Unregistered CommenterKumar

Nice review. I didn't even know such a gadget existed for the consumer. Too bad about the double image but it makes you wonder how aircraft get around this issue.

November 25, 2012 | Unregistered CommenterTom

@ Tom: actually it's not projected onto the multi-layered window itself. The head-up display consists of a projector and an own combiner 'display'. Rockwell Collins makes some great head-up guidance systems used in aircraft such as the Bombardier CRJ-200.

The display unit in this video is not a projector and the reflective sheet is not functioning properly as combiner. There's no calibrated, infinity focus image, it's just a toy. Altough I bet that's for a great part to blame on this particular model. There are systems for cars which are properly engineered, which in turn of course, will be more pricey.

November 26, 2012 | Unregistered Commentergadgeteer

I'm been looking for this thing for years now. I bought a version of this a few years ago on eBay (data from GPS instead of OBD port). Although the plastic sheet that came with mine is a bit better (more rigid, perfectly plain and self adhesive), the result is the same you mentioned in your review.

Some cars got it from factory and it's actually cool... here in Brazil, Peugeot 3008 (in France too as I could see it working) and 508 got a HUD, It's a small plastic screen (retractable) that displays car info such as speed and info from the board computer.

November 28, 2012 | Unregistered CommenterRafael

Techmoan, you can think about some Android application used in Android phones called Torque. With some HUD widget for Torque you can add many information from the OBD using some ELM327 OBD2 Mini Bluetooth Dongle which costs about $15 on ebay.
If you don't like the HUD feature you can still use the ELM327 and Torque to monitor your car and check and solve some faults just using your Android phone.
I think this is a better and cheaper solution.


December 1, 2012 | Unregistered CommenterMtz

Might work well on a motorcycle windshield (non-laminated plastic) or with reflective window tint mylar? Would be nice to have a HUD on a bike - good excuse for a windscreen, too. BTW: Suggest your next review be on a Triumph.

December 5, 2012 | Unregistered CommenterMotorMac

MotorMac...All my reviews are a Triumph (of style over substance), but unfortunately I can't see myself doing any more automobile reviews. The bike HUD idea is a fun one other than the fact that (as far as I know) bikes don't have OBD ports.

December 5, 2012 | Registered CommenterTechmoan

Now that I've seen this, I want one. That is, if they can get the double image thing worked out. As you said, it's totally useless but fun.

December 20, 2012 | Unregistered CommenterMottikhan

FYI regarding the windsheild film for the HUD. It appears to be no different than any other car window tint film, so it needs to be applied with some water, or soapy water. You wet down the window: apply film: squeegee out air bubbles and excess water. Enjoy perfectly fitted and flat surface.

January 1, 2013 | Unregistered CommenterJames Scott

I have a Bmw x5 with heads up absolutely love it keeps my eyes on road for speedo , gps and any other warnings ,it is clear and non invasive, if I were to change cars it is something I would miss...

April 4, 2013 | Unregistered Commenterlove my hud

Adopting latest technology is the fashion of everyone in this era. The advanced technology makes our tax more reliable and flexible. The uses of car has no limitation, the main purpose of a car is to journey or transformation.

But now peoples use a car for maintain the life style, spend a luxurious life, as an entertaining element beside its main purpose. Not only the audio systems but also a latest audio system with having advanced feature becomes an essential part for a car owner

May 22, 2013 | Unregistered CommenterHopkins

I really have just been wishing this video had the steps involved in going from demo mode to actual working velocity mode. I may have bought from the wrong chap overseas but every time i turn this thing on i can never get it to leave demo mode.

June 18, 2014 | Unregistered CommenterAnxious American

I have a similar unit. That film has a cover sheet you have to remove so it adheres to the windshield. Once you do that it's MUCH clearer. Now, since the image is reflected, if you wear polarized sunglasses at some viewing and light angles the display will appear to fade out. If you tilt your head it will reappear.

September 17, 2014 | Unregistered Commenterdll932

Hi! I have one of these devices, the problem with the lack of engine speed. I see something that can be stopped, but what ones to 11.7?

October 28, 2014 | Unregistered CommenterAkos lengyel

Wonderful video help me a lot to play this display, thanks!
How can I contact you via email? My email address is please send a message to me.
I am willing to ask you some small adjusting problem about this car display and SJcam.
And yes,I know a friend who would love to provide some great samples for test. Hope to see more projects from you.

February 28, 2015 | Unregistered Commentertechmoan

I have a similar unit. I took me a while to figure out that the film for the glass had TWO protective sheets on it-remove the one and you can stick it on. The other just protects the side facing you. I had to contact the vendor to get a 2nd one as I had ruined the 1st. Mine is similar in that switching modes is a long reach, so all I see normally is the speed and RPM, but I really like not having to look down to check my speed.

February 28, 2015 | Unregistered CommenterDave L

". . . whilst there probably is no reason why anyone would need a Head Up Display in their car . . ."

I've order a HUD for my car in the hopes that it might overcome a vision issue. I see only from my right eye; blind in my left. My speedometer is on the right side of my dash and blocked from my right-eye's line of sight by the curvature of the steering wheel. In order for me to see my speed, I have to cock my head to one side or the other. I'm really hoping the HUD will eliminate this disadvantage.

July 27, 2015 | Unregistered CommenterRandy

There are lots of reflective window films on ebay and many companies will send a small sample for £1 or even free.

July 27, 2015 | Unregistered CommenterTim

Maybe, this kickstarter HUD glass from Kickstarter could improve the HUD's visibility, couldn't it?

November 2, 2015 | Unregistered CommenterRelakS

Yup! It's a good product. Auto technicians are trying to invent new car accessories everyday just to make it even more suitable. We common people are just using the primary features only. It's really dumb not trying to know about all that technology. To be a car owner, you need to acquire lots of technical info. Well, good video here. After few years, with the advanced features, an ordinary user would be unable to drive a car if he/she lacks technical knowledge.

January 20, 2016 | Unregistered CommenterRobin Sinclair

while researching HUD systems (including unit you reviewed) I realized the RPM counter maxes out at 6K to 7.5K while my car (2K5 Acura RSX type S) red-lines at 8200 RPM and tops out at 9K.
I couldn't find any unit that topped out at 8.5K but found the "OBD Dragon" (C1?) that maxes out at 8K.
Unfortunately I can't find where to order it ("no longer available")?
During your research did you take a look at this system?

May 15, 2016 | Unregistered CommenterJ.R. Weber

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