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GPS locator for scooters from Lidl

A.J.Electronics 7689 35
This content has been translated » The original version can be found here
  • Hello
    I would like to share with you a project that I did some time ago.
    In July, I bought an eclectic scooter in Lidl with a seat and a basket.

    I thought that it would be useful to do some security and ordered a GPS locator from the Majfrends.

    By the way, I thought about a phone charger, the more the phone holder is bought.




    This topic inspired me https://www.elektroda.pl/rtvforum/topic3782282.html and I decided to do a security and in this "some kind" on / off switch.
    So to the point.
    The GPS locator I bought works in the voltage range of 9-90 V, so there is no problem with direct connection to the scooter battery (36 V, charged is about 42 V).
    It turned out to be a nice surprise that the voltage value is displayed in the tracking application, which makes it possible to control the state of charge through the application.
    The locator has the ability to remotely cut off the fuel (in the car), which I decided to use as an "kind" on / off switch. Here a small problem arose as it is not a simple mechanical but an electronic relay. It works in the voltage range (9-15 V). Using the Step down converter, I get a voltage of 12 V to power this circuit and the car charger. I bought a weak one-amp charger (it's hard to buy a weak one now, but I managed) so as not to drain the scooter battery too much (7.5 Ah). I added the charger for an emergency if the phone fell.
    The circuit diagram I used is straightforward, no frills:


    First, I had to determine which of the wires gives info from the display-shifters assembly to the controller about turning on the scooter (by holding the M button for a long time).
    Traditionally sticking pins and using a gauge. In my case it was a blue wire. And this is the only wire that I had to cut to implement the project, I did all the rest of the connections with the scooter wires using quick couplers.

    I will now discuss the connections and how it works.
    I set the step down circuit based on the LM2596 with adjustable output voltage to 12 V. Foot 5, the chip (i.e. start / stop pin) was desoldered from the board, it was connected to ground, and connected to the external circuit, which shortened it to ground using a transistor T1. The transistor T1 is switched on with the voltage of 36 V through the resistor R3 in series with the diode D1 (no diode in the attached diagram - sorry). The resistance divider R1, R2 supplies a dozen or so volts to the pin 5, the chip in the off state of the scooter and thus the step down converter does not work. This voltage is supplied from the display-lever assembly when the scooter is turned on. So that part of the blue cut wire that I mentioned earlier, from the side of the display. The voltage of 12 V from the converter is fed to the car charger (from which I removed the LED diode for savings, and so it is hidden in the battery and controller container together with the rest of the system), and to the fuel cut-off circuit in the locator. When we give the command "Cut Off Fuel" from the application, the voltage of 12 V is not applied to the base of the transistor T3 through the resistor R5 and thus the transistor T2 will not be controlled. The signal from the display will not go to the controller and the scooter will not work (it shows error E001). When we give the command "Restore Fuel" from the application, 12 V will come out of the locatoron R5 and T3 will turn on, and it will turn on T2 and the 36V signal will reach the controller when we turn on the scooter, and it will start to spin as needed. In addition, I connected the ACC input in the locator with the 36 V output from the display via the D2 diode (both D1 and D2 diodes are 1N4007), this way I also have information in the application about turning on the scooter.
    These few additional elements (T1, 2, 3 R1,2,3,4 =, 5 D1,2) were installed and connected on a small mounting plate. Unfortunately, it is such a "better" spider. I didn't have time to make a decent PCB.


    I have hidden everything in the scooter container for the battery and the controller. I re-secured with black silicone. Outside, apart from the phone charging cable, nothing sticks out.

    PS Sorry for the chaotically drawn diagram and some mumbling here.
    Greetings, if anyone has any questions or comments, I will be very happy to answer and listen.
    GPS locator for scooters from Lidl GPS locator for scooters from Lidl GPS locator for scooters from Lidl GPS locator for scooters from Lidl GPS locator for scooters from Lidl GPS locator for scooters from Lidl GPS locator for scooters from Lidl GPS locator for scooters from Lidl GPS locator for scooters from Lidl GPS locator for scooters from Lidl GPS locator for scooters from Lidl

    Cool? Ranking DIY
    Can you write similar article? Send message to me and you will get SD card 64GB.
    About Author
    A.J.Electronics
    Level 18  
    Offline 
    A.J.Electronics wrote 250 posts with rating 38, helped 19 times. Live in city Warszawa. Been with us since 2005 year.
  • #2
    gulson
    System Administrator
    Nice design, private scooters arriving, a series of articles on scooter electronics and batteries could do with it. In the meantime, write to me for a gift :)
  • #3
    szeryf3
    Level 24  
    Nice design and an interesting idea.
    I suspect that not one of the scooter users will try to do something like that.
  • #4
    pawel_mr
    Level 15  
    One thing puzzles me. The description states that the locator, during normal operation, gives the voltage that starts the scooter, and if we give the command "fuel cut-off", then the locator does not come out with 12V and the scooter is blocked. Is there no danger that the Chinese locator will break while driving, stop supplying 12V voltage and the scooter will stop? If so, what happens then? Will the scooter keep rolling or will it brake and be able to fly over the handlebars?
  • #5
    atek000
    Level 17  
    A thumbs up.
    I would just like to warn you against too much discharge of the battery. 2 years ago I installed a GPS locator on a scooter, in my case it was the iTrackSafe MT-1. It worked fine until after more than a week of parking I could not fire because the battery was discharged. It is supposed to be a small consumption, because as I remember well it is around 29 mA, but 29 mA * 24 h * 7 days = 4782 mA.
    So, despite the fact that the battery was new, only 3 months old, I had two firing from the cables then.
    You can install an additional switch and turn off the GPS when the scooter is, for example, in the apartment, and turn it on when you park in a public place.
  • #6
    Baskhaal
    Level 16  
    Interestingly, such a 'scooter' with a saddle is not covered by any regulations, even after the last amendment to the code. They define electric scooters as devices without a seat and as personal transport devices - these also do not have a seat. The last category are devices supporting movement - here we are talking about the propulsion of your own muscles.

    https://www.gov.pl/web/infrastruktura/nowe-pr...lektrycznych-i-urzadzen-transportu-osobistego
  • #7
    edz
    Level 12  
    Yes, here is the definition of a scooter and a personal transport device - UTO, but ... is there such a miracle as an electric scooter + saddle = electric moped ???

    Please let the law experts have their say. In my opinion, adding a scooter saddle makes it a moped.
  • #8
    A.J.Electronics
    Level 18  
    pawel_mr wrote:
    One thing puzzles me. The description states that the locator, during normal operation, gives the voltage that starts the scooter, and if we give the command "fuel cut-off", then the locator does not come out with 12V and the scooter is blocked. Is there no danger that the Chinese locator will break while driving, stop supplying 12V voltage and the scooter will stop? If so, what happens then? Will the scooter keep rolling or will it brake and be able to fly over the handlebars?

    Unfortunately, it will roll, which is why I have an additional mechanical protection, a chain with a disc brake clasp.
    Even without turning it on, it goes on anyway. This is how it is constructed. I don't know how the city ones for rent are.
    Nothing dangerous will happen, just as if you let go of the lever. At the maximum speed it reaches under my weight (61 kg ;) ), 24.9 km / h, it will just be slowing down. And if I turn off the application earlier, and someone cuts the chain, it will not go away on the engine, but it can push and ride like on an ordinary scooter. And the locator will inform you about the movement and show where the scooter is located.

    atek000 wrote:
    A thumbs up.
    I would just like to warn you against too much discharge of the battery. 2 years ago I installed a GPS locator on the scooter, in my case it was the iTrackSafe MT-1. It worked fine until after more than a week of parking I could not fire because the battery was discharged. It is supposed to be a small consumption, because as I remember well, it is around 29 mA, but 29 mA * 24 h * 7 days = 4782 mA.
    So, despite the fact that the battery was new, only 3 months old, I had two firing from the cables then.
    You can install an additional switch and turn off the GPS when the scooter is, for example, in the apartment, and turn it on when you park in a public place.

    Thank you, I also thought about it, but because, first of all, I can see the battery charge level from the application level, and secondly, according to the instructions, you have to charge it at least once a month when the scooter is not used, so in my case it is not too dangerous.

    Baskhaal wrote:
    Interestingly, such a 'scooter' with a saddle is not covered by any regulations, even after the last amendment to the code. They define electric scooters as non-seat devices and personal transport devices - these also do not have a seat. The last category is devices supporting movement - here we are talking about the propulsion of your own muscles.

    edz wrote:
    Yes, here is the definition of a scooter and personal transport device - UTO, but ... is such a miracle as an electric scooter + saddle = electric moped ???

    Please let the law experts have their say. In my opinion, adding a scooter saddle makes it a moped.

    Are you suggesting that it has to be registered and civil liability paid?
    It has a 300W motor.
  • #9
    austin007
    Level 17  
    A.J.Electronics wrote:
    The GPS tracker I bought works in the voltage range of 9-90V,

    Please write something about the locator. What model is it, or 2G, what sim card and tariff. Like with tenderness.
  • #10
    A.J.Electronics
    Level 18  
    I didn't want it to look like an advertisement, but this is the product

    https://pl.aliexpress.com/item/4000842937287.html?spm=a2g0s.9042311.0.0.27425c0fcsUg2N

    There is the MV730 model.
    It works on a 2G network, I ordered with a card for Europe but it did NOT work well it was free.

    I inserted my card from the "T-Mobile" and it went off the hoof with no additional settings.

    That's why I bought a pre-paid T-Mobile Internet SIM card and it works fine. Internet consumption at the level of several hundred kilobytes per month. Now, when winter is coming, I will not top up the card, but I need to find out from the operator how much it can hang asleep, because I do not smile to change it after the winter due to difficult access.

    Outdoor GPS sensitivity excellent. In the apartment, when it is standing, it immediately switches to tracking on the GSM base station, and it can "fly" up to 900 meters. But I will only go out into the street and the accuracy of a few meters.
  • #11
    edz
    Level 12  
    Art. 2. - [Legal definitions] - Road traffic law.

    Journal of Laws
    Journal of Laws 2021.450, i.e. | Effective act. Version: July 1, 2021 to: September 3, 2021
    Art. 2. [Legal definitions] The terms used in the Act have the following meanings:
    (...)
    46) moped - a two- or three-wheeled vehicle equipped with an internal combustion engine with a cylinder capacity not exceeding 50 cm3 or an electric motor with a power of not more than 4 kW, the design of which limits the travel speed to 45 km / h;

    47b) electric scooter - an electrically powered, two-axle vehicle with a steering wheel, without a seat and pedals, structurally designed to be driven only by a driver on this vehicle;

    I found so much in the law.
    And that 300 W
  • #12
    A.J.Electronics
    Level 18  
    edz wrote:
    And since 300 W
  • #14
    Citek
    Level 22  
    You are sure that the locator works in the range of 9-90 V, because the description only mentions 6-40 V. I am asking because I am wondering whether to mount it to an electric bike that has a 48V battery.
  • #15
    A.J.Electronics
    Level 18  
    Yes, in the description it is 6-40 V, but in the specification (on the auction website) and on the sheet attached to the product it is 9-90 V. And how to believe the Chinese?
    You can also write an inquiry to the seller, but if he wants to sell it, he will probably answer you to buy it.
    For me, when charging, it is a little above 42 V and it works fine. I can say that much.
  • #16
    Szyszkownik Kilkujadek
    Level 36  
    I am surprised by the accuracy of the GPS. After all, the locator is hidden under the metal sheet and glides almost on the ground. :-D
    Pay attention to the validity of the card, because when the operator cuts it off, take it all apart again. Play has a one year account validity deal like something.
    The legal issue is also very interesting. How did Lidl name its device? I would keep the manual and the receipt for the entire period of use. Just in case.
    How's it going? Do you have a comparison with a regular scooter?

    Has anyone met a GPS + GSM car locator connected to the OBD socket, which can read basic data from this port? I am interested in fuel consumption in particular.
  • #17
    11maly1
    Level 9  
    Hello
    At first, I apologize for asking a slightly different question. An unpleasant situation happened to me, namely, I broke into the premises and a large amount of tobacco products was stolen. Reading your ideas about locators on an electric scooter, the idea came to my mind to put the locator in one of the cigarette packs that are on the shelf in the premises. I am a layman in electronics, but you don't need to be an expert to guess that the locator must be powered by something. And here I address the question to the wise heads - is it possible to do? Transmission time is a maximum of 24 hours. When it comes to charging, I was thinking of inductive charging as it is with some phones. What do you think about it?
  • #18
    A.J.Electronics
    Level 18  
    Szyszkownik Kilkujadek wrote:
    I am surprised by the accuracy of the GPS. After all, the locator is hidden under the metal sheet and glides almost on the ground. :-D

    And yet it works.

    Szyszkownik Kilkujadek wrote:
    Pay attention to the validity of the card, because when the operator cuts it off, take it all apart again. Play has a one year account validity deal like something.

    I will definitely keep an eye on.

    Szyszkownik Kilkujadek wrote:
    The legal issue is also very interesting. How did Lidl name its device? I would keep the manual and the receipt for the entire period of use. Just in case.

    I have the receipt in the electronic version on my phone. There is a Scooter 0351450 1 * PLN 999 on the receipt. Polish user manual: EKS 77 folding electric scooter.

    Szyszkownik Kilkujadek wrote:
    How's it going? Do you have a comparison with a regular scooter?

    I ride it well (I did the soil at least once). I cannot compare with any other scooter.

    Szyszkownik Kilkujadek wrote:
    Has anyone met a GPS + GSM car locator connected to the OBD socket, which can read basic data from this port? I am interested in fuel consumption in particular.

    I know they are, but I don't know what exactly they can do. You have to look at the "Majfrends".

    11maly1 wrote:
    At first, I apologize for asking a slightly different question. An unpleasant situation happened to me, namely, I broke into the premises and a large amount of tobacco products was stolen. Reading your ideas about locators on an electric scooter, the idea came to my mind to put the locator in one of the cigarette packs that are on the shelf in the premises. I am a layman in electronics, but you don't need to be an expert to guess that the locator must be powered by something. And here I address the question to the wise heads - is it possible to do? Transmission time is a maximum of 24 hours. When it comes to charging, I was thinking of inductive charging as it is with some phones. What do you think about it?

    1) Whoever asks does not err.
    2) It is definitely possible. The locator has a tiny battery to maintain settings and will not work without an external power supply. You just need to buy a powerbank for this locator, preferably with an additional 12 V output, because I doubt that the locator will work well with 5 V. Or, additionally, give a step up converter from 5 to 12 V. The Poewrbank can have inductive charging, and if it is not, you can buy an external inductive charging coil.
    3) It is a matter of cost and size, because there is a lot to hide with these accessories.
  • #19
    neo62
    Level 16  
    I have been wondering about this locator for some time and my friend encouraged me :-D
    But I have a question, what do you need to set for it to work in the application? I fight him and he is in China all the time on the application.
  • #20
    austin007
    Level 17  
    A.J.Electronics wrote:
    Szyszkownik Kilkujadek wrote:
    The legal issue is also very interesting. How did Lidl name its device? I would keep the manual and the receipt for the entire period of use. Just in case.

    I have the receipt in the electronic version on my phone. There is a Scooter 0351450 1 * PLN 999 on the receipt. Polish user manual: EKS 77 folding electric scooter.


    I watched quite reliable material on this "scooter" classified as a different vehicle. Moving on public roads must be insured - civil liability. It seems the material was about a collision and a claim for damages by the owner of the "scooter". Refused, asked to pay civil liability insurance + fine. Most experts believe that it is correct.
  • #21
    A.J.Electronics
    Level 18  
    neo62 wrote:
    I have been wondering about this locator for some time and my friend encouraged me :-D
    But I have a question, what do you need to set for it to work in the application? I fight him and he is in China all the time on the application.


    As I inserted the SIM (Chinese) card that came with the purchase, it didn't work and he saw me in China. I just inserted the card from my phone (T-mobile) connected to the internet and it worked without any additional settings.
    I know that it is set by SMS commands (description in the manual, a bit not readable) but I didn't need it.
  • #22
    neo62
    Level 16  
    I put two cards in, play it mobile and on the application unchanged.
    What does the colleague get after the status message? Because for me it looks like it sees only one gps satellite:

    BAT: 6, GPRS: 0, GSM: 3, GPS: 1, ACC: 1, oil: 0, Power: 1, S: 0

    Sending commands does not change anything and interestingly now it stopped sending information about the power cut.
  • #23
    A.J.Electronics
    Level 18  
    I do not know if you have the same locator, because I have slightly different information. First of all, the status must be Online that the app shows the correct readings.
    I attach part of the screen from the application.
    GPS locator for scooters from Lidl
  • #24
    neo62
    Level 16  
    Same, from the same auction.
    I know it has to be online, the problem is it's not just not dependent on the card.
  • #25
    A.J.Electronics
    Level 18  
    Ie. need to configure APN. Fortunately, I didn't need it.

    As I mentioned, configuration via SMS. From what I read in the auction reviews and the questions and answers it is difficult but possible.
    You got such a short instruction with the locator "MV730 Quick Setup Guide" There is a table with commands and there is Information on how to configure APN.
    You can also write to the seller, they are also very helpful.

    Good luck.
  • #26
    neo62
    Level 16  
    I have tried apn but so far to no avail. We'll see, maybe we'll succeed

    Edit: it worked, you had to reset and then set the APN and server.
  • #27
    A.J.Electronics
    Level 18  
    neo62 wrote:
    Edit: it worked, you had to reset and then set the APN and server.


    Okay, this is also information for other users who might have problems with starting up.
  • #28
    SunTechnology
    Level 3  
    I will also assemble the locator and I'm going to make a cut-off, but if I don't plan a phone charger, I see it much easier and without soldering electronics in the sense of transistors or step-down, specifically:
    - the locator works, let's say up to 80VDC, so I connect the scooter batteries, which I have 36V
    - the locator controls the cut-off relay through the ground, so I take the 36V relay, not 12V, which comes in the set with the GPS
    GPS locator for scooters from Lidl
    So in this diagram, under 85-87 I connect the found by you and cut blue from the scooter display module.
    The only unknown is whether by connecting the blue output from the display module as ACC, the voltage level that comes out of the display will be controlled by the GPS powered by 36V? What do you think about it?
    In addition to this question, the same advantages as the fact that when the board is turned off there is a minimum power consumption from the batteries and the frequency of refreshing the GPS position varies depending on whether we turn on the hood or turn it off according to GPS settings, SMS codes.
  • #29
    A.J.Electronics
    Level 18  
    SunTechnology wrote:
    The only unknown is whether by connecting the blue output from the display module as ACC, the voltage level that comes out of the display will be controlled by the GPS powered by 36V? What do you think about it?


    Unfortunately, without the voltage being reduced by the stepdown circuit, there may be a problem with cutting off the power to this relay. When I tried on a regulated external power supply, it turned off the light bulb at 12 V (I used a 5 W bulb from the position lights), and at 30 V it did not turn off. As far as I remember, it was about 18 V without the bulb, because at this voltage I could not put a 12 V bulb. That's why I decided to lower the voltage with the stepdown system. When I "had" to have 12 V, I thought about the phone charger.

    You can test the relay and see how it works.

    Good luck
  • #30
    SunTechnology
    Level 3  
    As there is oc npn with GPS, it should work with a 36V relay, I am less afraid of that. I am more concerned that the blue wire signal from the "+ after ignition" display will be high enough with voltage to drive the ACC GPS signal as HI. How much voltage on this blue did you have with the display on?