Holy Stone HS175D Brushless 4K Drone, $236.99 (holystone.com...)
Manufactured by Xiamen Huoshiquan Import & Export Co. LTD. (https://fccid.io/2AJ55)
Last updated 03-11-22
The Holy Stone HS175D Brushless 4K Drone (hereinafter, probably just called the HS175D) is a smallish (360mm x 300mm x 70mm), surprisingly light (214.20g {7.55 oz.}) drone that features GPS stabilisation, a rechargeable 2S (two cell) 1,700mAh Li:Po (lithium polymer) flight battery, and the ability to tilt the camera's lens over a 110° range -- from pointing straight forward and slightly up to pointing straight down.
This isn't a flashlight, household lamp, Christmas light set, or other thing that glows, but it *DOES* have a number of LEDs on its fuselage (this word is definitely *NOT* pronounced "fyoo SELL' uh jee" as Drake Parker from the TV program "Drake and Josh" would pronounce it; the word is pronounced "" , so what the hey
I love things that fly; that's why I took the bate and also why I added a seperate section titled "PRODUCTS DESIGNED TO FLY" on my website a number of years ago and created a new website just a couple of years ago specifically for flying machines of this nature!!! I was also attracted to something that this drone has that many others don't...
1: It has GPS -- simply meaning that it can stably hover despite any mild wind and knows where 'Home' is.
2: It has brushless motors (I tend to avoid brushed-motor quads these days because of their very short life!)
3: It has a gyro -- that means it's easy to fly even for a "craptastic" pilot like me.
4: It has all of those wonderful LEDs
5: It has an
optical flow sensor; this allows the drone to stay stable in the air even when GPS isn't present -- such as when flying indoors.
6: It has folding pylons (arms) and propellers; this makes the HS175D easier to store and transport.
The HS175D is in the lower-end of being HOBBY GRADE, rather than just being another run-of-the-mill pisson toy grade drone.
It's not puny for one thing (it isn't huge, but it isn't microscopic either); and it sports BRUSHLESS motors that deliver incredible amounts of power and have a far longer useable lifetime than their brushed counterparts.
It sports a 4K camera with a 110° FOV (Field Of View) and a 5.8GHz transmitter to furnish a live video feed to the app; both still photos and aerial video can be taken with it!
If you choose to use a memory chip that is rated lower than Class 10, you *MAY* see skipped frames, "jitters", unwanted intermittent video artifacts, and similar horse puckey.
The HS175D has a very substantial, sturdy feel to it; it does not at all feel flimsy or loose like many products of, "Hoo Phlung Pu" origin so often do.
When you deploy (unfold) the pylons (arms), you can tell at once that the HS175D just exudes quality!
I believe that the HS175D can withstand winds of up to 22mph (35.42kph) thanks to that GPS stabilisation!
This quadcopter is a bit more complicated to get it to take off than your average toy-grade drone...here's how to get it off the ground:
As with any rechargeable product, charge the drone and radio first, insert a Class 10 or higher 4GB+ MicroSD memory chip into the drone, and then you can pretend to fly a humongous dragonfly (well, that's what kitty cats would think it was if it were designed to be flown in a small living room -- you CAN fly it indoors, but you'll want a decent amount of space such an empty two-car garage at minimum!)
First off, load the app called, "HS GPS V5" (the Android version from Google Play) onto your 5G WiFi cellular telephone handset.
1: Unfold the pylons (arms) starting with the two front ones. Once that is done, unfold the two rear pylons. Place the drone on the ground.
Press and hold the POWER button on the drone (it's located on the top of the drone's fuselage near the front); for three seconds and then release it; the drone will emit a short series of tones.
2: Turn the radio on by pressing the POWER button and then releasing it.
At this point you should deploy the antenna -- it's located on the back of the radio right near the center. Simply unfold it until it's sticking straight out.
3: Go into your phone's WiFi settings, and connect the one named Holy StoneFPV {string of letters and numbers}.
Then launch the app.
4: At this point, you'll need to perform a geomagnetic calibration of the drone. Pull both joysticks on the radio down and to the right. All of the lights on the undersides of the drone's pylons will flash a light green. Rotate the drone horizontally several times and then check the lights. When they change to dark green, turn the drone so that its camera faces either up or down, and rotate the drone several more times. When the lights on the front pylons turn red, then you can place the drone on the ground.
When all of the drone's LEDs turn steady-on, you're ready to take off.
Push the leftmost stick on the radio down and to the right and the rightmost stick down and to the left.
The drone should now blast off and possibly leave an expanding cloud of dust (if you launched in a dry, dusty area anyway).
Congratulations, you're now a pilot!!!
For additional instructions & tips on how to fly, please read the instructional material that comes with the product.
On the remote control, press the POWER button and then release it. On the drone, press & hold the "OFF/ON" button for a couple of seconds (until all of the lights on the drone have extinguished), and then release it. This should neutralise both of them. Fold the antenna on the radio.
Fold everything up, place the items back into the form-fitting compartments in the case, and then zip that puppy up.
The app records video to your mobile device whether you want it to or not; you'll want to go into the device's File Manager and delete them periodically or else you'll start seeing errors and other issues regarding low memory. *
If you're recording video and wish to take a still photograph, you must first neutralise video recording. Then take your still photo(s), and then restart video recording.
Videos are saved in clips of approx. 1,500,000 bytes (~5:00 runtime) so don't be surprised to see multiple videos on your MicroSD chip after each flight.
Most droners (drone pilots) prefer their flight videos split up this way; that way, if one video clip is fuxxored (corrupted), you don't lose the whole flight.
You can fly the HS175D strictly-dictly LOS (Line Of Sight) -- no FPV device is necessary even for preflight calibration.
If signal to the app is lost in-flight, the drone should automatically reconnect when it acquires signal again. Some HS175D owners report that they have to manually reconnect, but my particular HS175D does this automatically.
The battery in the HS175D AND the radio are rechargeable.
To charge the Li:Po battery in the HS175D, plug up the large end of the furnished charge cable into any free USB receptacle on your Pee-Cee or Mac computer. A red light on it should now come on.
Plug the smaller end of the USB cable into the battery itself -- to do this, slide the "claw" around the body of the battery, and slide it all the way up to the large end of the battery so that its three gold-colored pins engage with the terminals on the battery itself.
A yellow-green light on the USB-end of the charger will start blinking.
When this light stops blinking and goes steady-on, the charge cycle is complete, and the charger can safely be unplugged from both the battery and the computer.
Fully charging the HS175D's battery should give you approx. 22 minutes (advertised) of flying time.
To charge the radio's battery, unfold the "grips" on the bottom of the radio. Plug the smaller end of the USB cable (the end with the male MicroUSB connector on it) into the female MicroUSB receptacle for it on the right side of the bottom of the radio (that you just exposed by swinging down the "grips") and plug up the larger end of this cable into any free USB receptacle on your Pee-Cee or Mac computer.
A red light on the radio (located under the FPV device holder; flip the FPV device holder up so that you can see this light) will come on.
When this light extinguishes, the charge cycle is complete.
At this point, the charger can safely be unplugged from both the radio and the computer.
This R/C drone is meant to be used as a toy in a large dry area outdoors or a large indoor venue, not as a flashlight meant to be carried around all the time, thrashed, trashed, bashed, and abused; so I won't throw it against the wall, stomp on it, viciously chuck it at one of those wall-mounted porcelain uranators to see if it becomes broken (the drone, not the uranator!), try to drown it in the {vulgar slang term for a fudge bunny}bowl or the cistern, run over it, swing it against the concrete floor of a patio, bash it open to check it for candiosity, fire it from the cannoñata (I guess I've been watching the TV program "Viva Piñata" too much again - candiosity is usually checked with a scanner-type device on a platform with a large readout, with a handheld wand that Langston Lickatoad uses, or with a pack-of-cards-sized device that Fergy Fudgehog uses; and the cannoñata is only used to shoot piñatas to piñata parties away from picturesque Piñata Island), send it to the Daystrom Institute for additional analyses, launch it into the upper atmosphere of Gamalon V** so that chairman Sonji gets all piddled-off about it, or inflict upon it punishments that I might inflict upon a flashlight.
This drone has foldable pylons (arms) and folding props; this makes transport and storage a whole lot easier.
The drone uses 2.4GHz RF radiation to communicate with its radio, and its camera uses 5.8GHz (802.11ac or just 5G WiFi) to relay its photographic and videographic data back to your smartphone or tablet.
There is an optical flow sensor on the bottom of the drone; this helps to maintain the drone's position at lower altitudes. The ambient light level must be fairly high in order for this optical flow positioning system to function though, so please do not expect it to function on night missions.
Optical flow is functional to 3 meters (9.84 feet) in altitude.
The mobile phone holder on the radio can accomodate handsets up to 75.60mm (2.97") wide.
The camera lens has a 110° wide-angle FOV that will allow you to capture more detail and it features a 1/3" Sony CMOS sensor.
Photograph of the radio (transmitter) in its feral state.
Photograph of the radio (transmitter) for this drone with a cellular telephone handset clipped into place.
Photograph of the case that this drone comes with.
Photograph of the case, opened up as it would be when you're about to deploy the drone.
Photograph of the Class Y terrestrial planet Venus; taken by the drone's camera but captured on my FPV device.
TEST NOTES:
Test unit was purchased on Ebay on 03-01-2022 and was received at 10:27am PST on 03-03-2022.
Product was defective right out of the box and could not be flown.
Therefore, the dreadful, "" icon will be issued at once.
Here is a video on YourTube that shows exactly how my HS175D is defective.
Note how the port (left) front propeller fails to spin up with the other three.
As a result, the HS175D fails to lift off and subsequently cannot be flown. :-(
** From the Star Trek: The Next Generation episode, "Final Mission".
UPDATE: 00-00-00
MANUFACTURER: Xiamen Huoshiquan Import & Export Co. LTD. for Holy Stone
PRODUCT TYPE: Small hobby-grade drone w/ GPS
LAMP TYPE: LED
No. OF LAMPS: 3 (2x RGB in the drone's pylons, 1x red in radio)
BEAM TYPE: N/A
REFLECTOR TYPE: N/A
SWITCH TYPE: Pushbutton on/off on drone and on radio
CASE MATERIAL: Plastic
BEZEL: N/A
BATTERY: 1x 7.60V 1,700mAh Li:Po for drone, unknown capacity rechargeable cell for radio
CURRENT CONSUMPTION: Unknown/unable to measure
WATER- AND AFRICAN ELEPHANT MICTURITION-RESISTANT: Very light sprinkle-resistance at maximum (though if an elephant really does go poddy on it, you've got FAR bigger problems than a stinky dead drone, hahaha!!! )
SUBMERSIBLE: ¡¡¡EL CONEJITO DE PASCUA CON UN CEPILLO DE DIENTES QUE CAYÓ EN UN HIGIÉNICO DE LOS, NO!!!
ACCESSORIES: USB charging cable, charger, 2x flight batteries, 4x spare blade sets, Phillps screwdriver
SIZE: (Stowed): 145mm L x 90mm W x60mm D; (Deployed): 360mm L x 300mm W x 70mm D
WEIGHT: 214.20g {7.55 oz.} (incl. flight battery & MicroSD chip); battery alone: 70.20g (2.48 oz.); radio: 140.80g (4.970 oz.)
COUNTRY OF MANUFACTURE: China
WARRANTY: 30 days
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" 
, so what the hey
" icon will be issued at once.
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