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  • AndreaD20 commented on Peter Balch's instructable Transistor Curve Tracer27 days ago
    Transistor Curve Tracer

    Hi, I'd like to get one to try out this project. How can I get it? Thank you!

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  • AndreaD20 commented on Faransky's instructable Portable Function Generator on Arduino6 weeks ago
    Portable Function Generator on Arduino

    Thanks for your post. I've gathered all the components, and after two months I can finally start the project. Coudl you please send or share (asap3210@gmail.com) the pcb layout? I am trying to figure it out by the photos you've taken, and following the tracks, but it is really difficult this way. Regards,

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  • AndreaD20 commented on Direct From The Lab's instructable Acoustic Levitator3 months ago
    Acoustic Levitator

    Hello Asier,Until you launch the directional speaker, I've decided to give it a try to this other project I found on YouTube:https://youtu.be/aBdVfUnS-pMI just wanted to ask you if this array that I built would be suitable for your project as wellhttps://m.imgur.com/a/2CdR8CmI used 32 transducers in parallel, same type as I used for your first two projects at instructables, and they worked great. I double checked the polarity also.Can you give me any advice? Thanks as always!

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  • AndreaD20 made the instructable Laser Cut Puzzle Collection5 months ago
    Laser Cut Puzzle Collection

    Thanks for sharing the files!

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  • Upgrading RAMPS 1.4 With TMC2130 Stepper Drivers

    Hi. Thanks for your instructable! it is very clear. I wanted to ask you something. I am using a CNC shield with the A4988 drivers and I want to test the TMC2130 with the RAMPS 1.4. I know it doesnt make much sense for a CNC, but I want to try it. I am using 3 nema 1.7. In my actual CNC configuration I power the shield with 24 volts - 5 AMP power suply. What type of power suply should I use for the RAMPS 1.7 & 3 nema 17? Absoute beginner..;)

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  • Change the Baud Rate of HC-05 Bluetooth Module Using Putty Program

    Why tx-tx and not tx-tx?

    I meant tx-rx

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  • How to Make GRBL + CNC V3 Shield Based Mini CNC Machine From Scrap DVD Drive

    Hi, thanks for the instructable. One simple question: What's the Vref at the driver for these type of motors, considering that my driver has an R100 resistor? My calculation is 0.24 8*0.1 = 0.192 Volt, but I want to be sure. Thanks!!

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  • Arduino Mini CNC Plotter Machine From Dvd Drives

    Hi, thanks for sharing your project. Can you please tell me if there is any variation in the code if I use an Arduino Mega? I just have this one and a nano.Thansk for your reply!

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  • AndreaD20 followed Ardumotive_com1 year ago
      • Arduino UNO Learning Shield by Ardumotive
      • Arduino Digital Clock With Alarm Function (custom PCB)
      • MIKE - Arduino Line Following Robot for Beginners
  • AndreaD20 followed Asier Marzo1 year ago
      • Ultrasonic Array
      • Acoustic Levitator
      • Acoustic Tractor Beam
  • 3DOF Ball on Plate Using Closed Loop Stepper Motors

    Looks really good! Could you please post the STL files for the 3D printer? I'd really like to try it out!

    Hi, I really like your project! Could you please post the files as STL so we can use the 3D printer? Regards,

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  • AndreaD20 commented on slulu226's instructable How to Make a Ball Launcher 1 year ago
    How to Make a Ball Launcher

    Hi there. I am going to give it a try. You can find the components here:http://store.makeblock.com/showcase/how-to-diy-a-t...There was one missing, found it here:https://makeblockshop.eu/products/makeblock-timing... Regards,

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  • AndreaD20 commented on Asier Marzo's instructable Acoustic Levitator1 year ago
    Acoustic Levitator

    Hello, Asier.I have noticed that the drops are sort of flattened, and I guess that might be because of the voltage applied. Could I replace the DC transformer with a DC boost voltage module as it was used in the previous device? I'd like to see the effect as I increase the voltage, but I don't want to burn it ;)

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  • AndreaD20 commented on Asier Marzo's instructable Acoustic Levitator1 year ago
    Acoustic Levitator

    Can you tell me what type of transducers will you use for the directional speaker (16 mm or 10 mm) ? I already have 75 16 mm transducers, I bought them a few months ago because I thought they would be needed for this project, buy I finally ended up doing the small lev. Thank you

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  • AndreaD20 made the instructable Acoustic Levitator1 year ago
    Acoustic Levitator

    Hi, I just finished it. This is so cool! Thanks Asier for sharing your work, I really appreciate it. Now I will experiment with different objects.Here is a short video:https://youtu.be/EA6DBERLwnc

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  • AndreaD20 commented on Asier Marzo's instructable Acoustic Levitator1 year ago
    Acoustic Levitator

    If you go to Alibaba and ask them for quotations, you can get really good prices.

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  • AndreaD20 commented on Asier Marzo's instructable Acoustic Levitator1 year ago
  • AndreaD20 commented on Asier Marzo's instructable Acoustic Levitator1 year ago
    Acoustic Levitator

    Hello again Asier, Just wondering, if the transducers have polarity, how come the only important thing is that they are all with the same polarity, but not if this is + or -? Doesn't this affect the final performance of the transducer or power comsumption? Regards,

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  • AndreaD20 commented on Asier Marzo's instructable Acoustic Levitator1 year ago
    Acoustic Levitator

    <Insert facepalm here> Thanks!!

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  • AndreaD20 commented on Asier Marzo's instructable Acoustic Levitator1 year ago
    Acoustic Levitator

    Hello Asier. I'd like to ask you a question just to make sure I got it right:1st). The arragement for the transducers is the same as the one used in your previous levitator? I got a little confused with the procedure used to mark the transducers 1st device: "if the firstspike goes up, mark the ground leg" and then point the marked leg upwards; 2nd :If the spikegoes down, mark the leg connected to ground" and then point the marked leg inwards). At the end I get that the result is the same, but then I look at the colour of the wires and in the first device the larger-external wire is the red one, but here is the black one...

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  • AndreaD20 commented on Asier Marzo's instructable Acoustic Levitator1 year ago
    Acoustic Levitator

    Hi Asier, thanks a lot for posting the new levitator. Here we go!!

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  • THE SIMPLEST FUNCTION GENERATOR BUILT ON a BREADBOARD

    Hi, thanks your your instructable. Could you please include the gnd and power supply to the shematic? I don't know where these go

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  • AndreaD20 commented on Asier Marzo's instructable Acoustic Tractor Beam1 year ago
    Acoustic Tractor Beam

    Hello Asier,I am trying to learn as much as possible from your device, and I have noticed something i haven't seen before, since I didn't have a decent oscilloscope. My tractor beam works fine, I can move the object up and down without problem. But when I check the signal with the oscilloscope, I see that the reading from the analog pins looks perfectly square, but the amplified one is noisy. Is there a way to reduce this? What might be the cause?. I attach an image.Thank you very much in advance!! Regards,

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  • AndreaD20 commented on Asier Marzo's instructable Acoustic Tractor Beam2 years ago
    Acoustic Tractor Beam

    Hi Asier, I´ve connected the bluetooth module in the same nano used for the device. However, all I can get is the ball jumping for a moment, and I guess it is just because of the interference. My code sets D2, D3 or D4 high or low depending on the virtual button I press (that as much as I got from the original code). I am sure I am missing something. Coudl you please give me some advice?Regards,

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  • AndreaD20 commented on TheSuperSewcio.'s instructable Arduino Stroboscopic Light2 years ago
    Arduino Stroboscopic Light

    Hi. Thanks for sharing your code! I have two questions:1.How did you set up the multipliers for pot1 & pot 2 ( 30 and 5)?2. Why do you define val as 1025 * 5?Thank you in advance for your reply

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  • How to Build Your Very Own Time Fountain

    Hi. I already have all the components. Could you please post the schematic? (or send it to me: asap3210@gmail.com)Thanks in advance, and best regards,

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  • AndreaD20 commented on tallman1996's instructable Magic Fountain2 years ago
    Magic Fountain

    Hi, This looks great! Could you upload again the vídeo? I can't see It. Also the t code could be fine

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  • How to Build Your Very Own Time Fountain

    Hi, thanks a lot for your instructable! Do you have a video with the final result? I coud not find it.Regards,

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  • AndreaD20 commented on Asier Marzo's instructable Acoustic Tractor Beam2 years ago
    Acoustic Tractor Beam

    How many transducers should de get?

    Hi Asier, I have a bluetooth module and I would like to use blynk to control the movement of the ball. Could this affect in any way the performance of the code?And, regarding the standing wave levitator for liquids, could you advance what tytpe of transducer/s are needed so we can order them on time? Thanks a lot again, and best regards,

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  • AndreaD20 commented on Asier Marzo's instructable Acoustic Tractor Beam2 years ago
    Acoustic Tractor Beam

    Can you tell me the specs of the power supply you are using? (volt & amp). I think the L298N should work just fine.

    HelloAsier, I’d like to ask you a couple of questions:1st.I’ve seen the videos where you show a 3D representation of the acoustic forces resultingin your device, but I still don’t understand how something like the image Iattached is possible. How come can the object fly so high. Are there like close“links of a chain”?Which leadsme to the 2nd question: The levitation seems incredibly stable. I’veworked with magnetic levitation and I need a continuous loop using PID controlin order to keep the system stable. How can this be so still?And 3rd:Could you please explain or post the code in plain C++ or a flow diagram? I understandthe part needed in order to achievehigher speed in the Arduino, timers, etc, but most of it is quite hard for meto grab.Many thank...

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    HelloAsier, I’d like to ask you a couple of questions:1st.I’ve seen the videos where you show a 3D representation of the acoustic forces resultingin your device, but I still don’t understand how something like the image Iattached is possible. How come can the object fly so high. Are there like close“links of a chain”?Which leadsme to the 2nd question: The levitation seems incredibly stable. I’veworked with magnetic levitation and I need a continuous loop using PID controlin order to keep the system stable. How can this be so still?And 3rd:Could you please explain or post the code in plain C++ or a flow diagram? I understandthe part needed in order to achievehigher speed in the Arduino, timers, etc, but most of it is quite hard for meto grab.Many thanksin advance,

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  • AndreaD20 commented on mrvolta's instructable DIY Microscope2 years ago
    DIY Microscope

    Hi there! I guess it depends on the webcam lens, but what is the expected xXX ?

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  • AndreaD20 commented on Asier Marzo's instructable Acoustic Tractor Beam2 years ago
    Acoustic Tractor Beam

    I did all the test with the USB port. I didn't use more than 10 v. Anyhow, I would not recomend It, I did It at my own risk with an old laptop ?

    I used cheap ones from Aliexpress Android working fine. One of them at each end is a little out of place once but It doesn't seem to be a problem

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  • AndreaD20 commented on Asier Marzo's instructable Acoustic Tractor Beam2 years ago
    Acoustic Tractor Beam

    I don't know why, but I can't upload the video properly. Here is a link:https://www.youtube.com/watch?v=yN8oNPYYBzs

    ... and I'll be glad to help anyone with his project ;)

    Check the jumpers at both sides in the L298N

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  • AndreaD20 made the instructable Acoustic Tractor Beam2 years ago
    Acoustic Tractor Beam

    Hi, I just finnished the project. This is so far the largest object that I've been able to levitate. With smaller ones it doesn't bounce at all. I managed to hold it floating horizontally, with good stability. Still working with the "upside down" way. I'd like to know the basics of the code, since it seems to be written in assembly, I used a DIY oscilloscope like this one: https://www.instructables.com/id/Use-Your-Laptop-a...Thanks Asier, this has been fun. Looking forward to see the improvements you make.https://www.instructables.com/id/Use-Your-Laptop-a...

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  • AndreaD20 commented on Asier Marzo's instructable Acoustic Tractor Beam2 years ago
    Acoustic Tractor Beam

    You are right! I didn't notice I removed that jumper. Thanks a lot.Now both sides are fine. When I place the object it is pushed quite a bit outside the bowl, but each time jumps on a different direction.Is it possible to test the polarity of the transducers the same way (with a metal wire the inside of the transducer) once they are placed in the bowl and soldered? I used a DIY oscilloscope that just reaches 8 KHz (it uses the PC sound card) and I can't use that techiqueRegards,

    Hi Asier, thanks for sharing this great coment. I am testing the output volt. and I get about 12 votls at OUT1 and OUT2, but OUT3 & OUT4 gives 0 volts. The regulator is set at 20 Volts. And the reads from A0 to A3 in the Arduino are 2 volts each. Any idea about what this might be? Thanks in advance

    * I meant project ;)

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  • AndreaD20 commented on J_Hodgie's instructable Electromagnetic Floater2 years ago
    Electromagnetic Floater

    Hi, it's been a real challenge!. I finally used IR leds, more stable. Do you know about any other interesting projects involving hall sensors?Regards,

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  • AndreaD20 made the instructable Electromagnetic Floater2 years ago
    Electromagnetic Floater

    Here is a short video:https://youtu.be/RqrPMbACC7s

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  • Hall Effect Sensors 3: PID Control

    Hi. Thanks a lot for your instructable!. Could you please elaborate a little about how you used Brett's Library?, I think it is a very important part (if not the most) of your project

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  • AndreaD20 commented on fprocyon's instructable Low Cost Arduino Jammer 433 Mhz2 years ago
    Low Cost Arduino Jammer 433 Mhz

    Hi, can you please tell me what did you use for the graphics? Is it possible to use processing? If so, how?Regards,

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  • The Ultimate FM Transmitter  (Long Range Spybug)

    aprox 350 x 150 mm

    Hi. Thanks for this instructable, I haven't tried this for a long time! Though it seems like I have some problem with the soldering, I need to review it ;)

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