#119 

Was a little late today. It is still "warm" from production...

Orkhan AmirAslan Same here. These video's spark my imagination.

:-)

+Jonas Hansen Me too...

Thanks for the tip. I also heard about that after I made the video...

Yea, they should even work, if they are submerged during drive...

My pleasure!

+Perspectologist Thanks for the tip. I was a little in a hurry and thought, it is good enough. Many projects in parallel...

Welcome aboard the channel!

Thanks for your clarification. I like to learn from my viewers!

It is pointless anyway as we could only get a reading at the rate of 50Hz from these sensors.

You are right. That would be a possibility

Thanks for the feedback!

+norm1124 ja, das war sehr einfach. Nur File auf das Laufwerk ziehen und fertig.

I have to continue this project in the next time. And I plan to use more than one sensor to compensate for the slow speed. But it takes some time and I only will start if I can afford to stick with it for a while.

You are welcome!

Thanks for the tip. I fear this, too. This is, why I said, I am not shure it will work

As I said: I am not sure, I will be successful...

:-)

:-)

Thank you.

They also had their holiday season...

Any one with sensors or with servos are always good to start with. The libraries always have some examples which should run. Then, you can to combine things like reading an analog value an set the position of the servo accordingly etc.

Thank you for the advice. I corrected my original comment . :)

I assume it uses the same physical laws of mirrors... But I will try what it means in practice

If it doesn't, it could be a bit more simple to use mirror as the only moving part with statically fixed sensor

true

:-)

+Timothy Stark Good to know for the American viewers

I do not know about reliability, but I am also concerned... I got it here: bit.ly/2lIwEFM

Andreas Spiess The specs almost sound to good to be true....😀

Andreas Spiess Thanks for the link Andreas. The specs almost sound to good to be true....😀

The Kinect is a very interesting device. But a little pricey for my robot... Maybe I will play once around with it.

No

It must be that they do some averaging, you are right. And: I have no idea how to solve the mechanical part...

If the capsule slip ring has enough mechanical support (ie: acting in the role of a bushing or bearing) for the rotating part, I'm imagining that a 3D printer could create a hollow gear which slips exactly over the stubby (hollow) shaft, and also provides for support of the rotating sensor part. Then this gear could be driven by another gear connected to a motor whose shaft is parallel to the slip ring's axis, but offset appropriately. I don't have a 3D printer nor do I yet know how to design 3D parts like this, so this is speculation. If that caused too much wear on the slip ring, something more elaborate would have to be done. I can picture a motor on one side of the rotating parts, with the slip ring on the other side (motor and slip ring share same rotating axis). But then there are the supports for the top end Ieg: the slip ring or the motor) in the way of the sensor. Not happy with either, thus looking forward to following your explorations. Thanks for your channel!

I think, I have to try different thinks. But first, I have to repair my 3D pinter...

I think, I mention it in the video as one possibility. I have a few which I even bought with the hack already done...

It should work behind thin glass. So, you could include it in a water-tight housing.

what about the outside light conditions. is there any possible interference ?

I never tested. Maybe you consult the datasheet.

Yes, I think you can build one with this device..

It depends. Youu have to try. Surfaces usualy are not completely flat.

This would definitively reduce complexity, but I do not know, how TOF reacts on mirrors. I will try it once with a fixed mirror first

ultrasonic sensors have a reach of 4 meters. And then, you can buy lasers which cost a few 100 dollars.

No, I do not have one here.

Yes. But I do not know, when

What is a "turning connection"? Where does it show in the video?

On this channel we only use the Arduino IDE as a programming tool. So I do not know :-(

Pay also attention to the range in sun. Then, it is quite short.

I was hoping for the same thing, although 1 meter isn't nearly enough range :/

Unfortunately, we cannot change this...

Sadly yes! Will probably have to go the more expensive lidar route to get something functional

RU-vid is only my hobby and unfortunately, I have no time for consulting

You can buy ready-made Lidars (not expensive for what they include). They are very mechanical devices, and I will not build one myself.

@@AndreasSpiess Are they the ones with only for 2D pane using one laser diode? It is the lidar I would like to avoid. I have not seen any practical 3D lidar which are not expensive.

@@ShopperPlug Yes, they are 2D Lidars.

The link is now in the description

Thank you this is in my wishlist (it is currently sold out so cannot be added to cart)

You can trust the datasheet for such a clean surface.

Es gibt Videos vom Roboter und dort möglicherweise sogar einen Sketch. Und es liegt ein neuer Lidar Sensor auf meinem Tisch. Hatte eigentlich gehofft ich könnte den Entfernungsmesser dafür brauchen. Das war aber bekanntlich ein Flop...

Thanks for your valuable feedback. Did you try with the mirror? I have one laying around as a "backup"...

+John Doe Wilco

The 20ms sample rate is indeed disappointing. I found a faster sensor with a range of 10cm-150cm and a sample rate 16.6ms 60hz www.pololu.com/product/2474 However it is still very slow comparing it to lidars that can do 360 degree 1075hz update rate with a range of 40 meters :), The Scance sweep scanner seems very promising for $350 scanse.io/

Thanks for the compliment ;-)

No, I did not measure. Maybe it is in the data sheet

1. Which tools are you interested? Video/audio or programming?2. I did not write the program and did not design the board. So, I do not know, how they do it. As I said, I will only use one, so I do not have to solve this issue...

I am interested in the video and audio software, sorry for the confusion. Do you have any tips on solving the double sensor configuration? Thanks.

1. Power Director and Audacity 2. Google for "I2C multiplexer"

The VL53L0X does support changing its I2C address, however it can only be done using an I2C write. If you have multiple VL53L0Xs they must be taken out of reset one at the time using other GPIO pins and have their address programmed. More information can be found in this application note from ST: www.st.com/content/ccc/resource/technical/document/application_note/group0/0e/0a/96/1b/82/19/4f/c2/DM00280486/files/DM00280486.pdf/jcr:content/translations/en.DM00280486.pdf. And as far as I can see the Arduino driver supports it github.com/pololu/vl53l0x-arduino/issues/1.

Thanks for this info. I was not aware about this fact.

Thanks for the feedback. Professional companies write their code quite different because they have to make sure, everything is compatible with their standards...

Where did I use glass?

Integer numbers give enough range. But of course, you can convert them into float if you want. But this does not change the accuracy of the sensor.

Water should reflect light. So it should work.

+sumit sharma I think so,but I did not try

A fraction is reflected, and a fraction penetrates. The reflection from the water surface is specular, ie mirror like. This makes it difficult to detect unless your receiver is aligned to receive the reflection. The fraction that penetrates is absorbed by the water as it passes through it. The deeper it goes, the less energy it has. Infrared is absorbed more rapidly than visible. Blue/green light is absorbed the least in water. %32 nanometer green is the most common laser wavelength for hydrographic lidar.

:-)

I do not understand your question

how to use lora technology in calculating time of flight

I do not think that these two technologies have anything to do with each other.

No. Because its range in sunshine is only about one meter. I think, this is not enough. Ultrasonic detectors go up to 4 meters which is enough to stop a copter coming home.

Only if you create a mechanical device to move the sensor.

I do not understand your question

Do you mean "Slip Ring"? LPM-04A

Looks promising. There are a few commercial sensors around. But for hobbyist, sometimes not the easiest way is the most interesting one... Or: The way is the goal.

Thank you for your feedback!

@@AndreasSpiess I forgot to mention otherwise it's a good video! Thank you "the guy with the Swiss accent" ♥️

I think so.

I did not continue it yet. Had other priorities...

You are right. But it depends on how many measurements you want to take during a particular time.

:-)

:-)

:-))