Hangsun S80 Lamp
I purchased one of these lamps in 2016. Below details my findings and some help to others (maybe).
The product is not good at all – indeed if returning it were a practical option I would – but because I live down-under, shipping costs make this prohibitive – so I’ve tried to make the best I can.
Problems I encountered –
I could not download the Android App, no matter how hard I tried – I assume this is because of country restrictions set by the developer. Luckily, I reached out to them, and they responded, and they responded with a QR code to download the app (not sure if this is a different one to the one on the base of the unit and manual, or if they updated there permissions), but here it is:
As this file appears to not be valid anymore – here is a copy of the APK.
This app seems to work a lot better then the IPad app I previously needed to use – specifically it fixes a bug where you could not set maximum brightness on the lamp, and has a cleaner interface.
The display on the unit is backlit – and the backlighting only comes on when you are interacting with it – it is also blindingly bright white light – particularly in a dark room. This means that you can’t simply look over at the clock to see its 3am. I greatly greatly reduced this issue by adding a small red LED to the back-light (in conjunction with a 150 ohm resistor, which I attached to the top and bottom pins of the conveniently located CON6 connector to the left of the display board). This allows me to read the light without having to turn it off. Next time I open the unit, I intend to disconnect one of the 2 white LEDs which power the backlighting. (Its not possible to simply replace one of these with a red LED, as they are merged into the display).
Although very, very let down by the software, the hardware appears to be OK – although it is all plastic. The design appears to be modular and thus somewhat hackable.
One confusing and disappointing thing though is the maximum lamp voltage is supposedly 6 watts (according to the package this is the size of the replacement lamp, and according to an email from them this is the maximum size). The problem with this theory is that the lamp included is a 7 watt warm white dimmable LED. While more-or-less adequate, its not fantastic, and certainly not as good as my previous jerry-rigged system which used the equivalent of a 100 watt CFL bright white light.
Other notes and letdowns
The promotional video seems to imply you can program a significant number of on-off events – this is incorrect – you are limited to a maximum of 2 events. You can not specify which days, although you can turn the alarm on and off manually – this is nowhere near as convenient as a 7 day timer for example.
You can’t have the light come on without an alarm – the alarm level can be set to low, but not off. This is irritating. I intend to install a switch so I can disconnect the speaker.
The light seems to turn on at random times – but without sound. Interestingly this has stopped after I unplugged the unit for an extended period out of frustration of it coming on in the middle of the night.
On my unit, you can’t output sound over Bluetooth to the device. (You are supposed to be able to do this according to the manual). Not sure why this is, the unit is paired, just no sound output, regardless of volume!
The amazon account has a number of 5 star reviews – if you look at the reviewers though, they are all (as of the time of this post) shills, having all posted exactly 2 reviews on the same 2 products. The other reviews stand at 1 – except for mine, which I need to upgrade to 2 (I’m doing that as part of a deal I’ve done with them to get the QR code and confirmation of the maximum wattage – and to be honest, the unit is kinda useable)