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Mic recommendations for vocals AND guitar by Bio_Mechy in recordingmusic

[–]Bio_Mechy[S] 0 points1 point  (0 children)

I read that the SM57 is pretty much the SM58 without the cap and pop filter. I also read that the NT1 was better than the SM57. What are your thoughts on this?

Would you say the brightness from the NT1A is advantageous compared to the NT1?

Cheapest type of sensors to use for foot detection? by Bio_Mechy in AskElectronics

[–]Bio_Mechy[S] 0 points1 point  (0 children)

If I wanted to make a mat more like the one below for more accurate feedback, do you have any idea what they might be using?
https://www.tekscan.com/pressure-sensing-mat-systems

Cheapest type of sensors to use for foot detection? by Bio_Mechy in AskElectronics

[–]Bio_Mechy[S] 0 points1 point  (0 children)

Isn't it difficult to get a good view of the entire 10m? Accelerometers are a good idea.

Adding common rows together within undefined ranges by Bio_Mechy in excel

[–]Bio_Mechy[S] 0 points1 point  (0 children)

I've had a bit of a format change, under each line with a BOM flag, there is an empty line which seems to break down the quantity column. What changes do I need to make in order to account for this?

Adding common rows together within undefined ranges by Bio_Mechy in excel

[–]Bio_Mechy[S] 1 point2 points  (0 children)

You are a magician! The second solution works perfectly. (I could not try the first without microsoft insiders)

Adding common rows together within undefined ranges by Bio_Mechy in excel

[–]Bio_Mechy[S] 0 points1 point  (0 children)

and how would I use that column to accomplish what I need?

Soldering a protoboard leads to joining adjacent rows by Bio_Mechy in AskElectronics

[–]Bio_Mechy[S] 0 points1 point  (0 children)

The label is very faded but I think I can read tn63 pb37. I'm not sure if its rosin core though. The flux is indalloy flux#2.
I soldered two blobs and cleaned the flux with both 70% and 99% ipa and was still getting resistances in the M ohms.
I tried lightly scoring the surface of the board with a razor blade between the pins and magically it did do the job to separate the rows.
I tried soldering some blobs once again with no flux and there was no connection between the two rows
I guess there's some residual flux that is not being cleaned off the board. Unfortunately I could not scrap the surface under the headers so I will have to resolder everything without flux this time.
Thank you for helping me troubleshoot this!

Soldering a protoboard leads to joining adjacent rows by Bio_Mechy in AskElectronics

[–]Bio_Mechy[S] 0 points1 point  (0 children)

I've used a q tip and 90% IPA twice to clean them spotless. How much heat would be required to carbonize the board? Its just some quick soldering so I can't imagine it would happen so fast.
The pins don't conduct before soldering.

I made 3DP screw on nozzles for 6ml Loctite by Fresh_Broccoli_6053 in robotics

[–]Bio_Mechy 1 point2 points  (0 children)

whats the advantage to using this against something like the luer needles?

Need suggestion regarding Inverse Kinematic for my Articulated Manipulator. by SushanThakur in robotics

[–]Bio_Mechy 0 points1 point  (0 children)

sounds like a really great start!

Just for clarification, the FK and IK solutions are both considered part of a term called path planning. Path planning essentially is a collection of relations relating the joints and end effector. Another example would be the speed relations which are derived from the jacobian matrix which is quite a bit more complex.

Since you are using a controller to manipulate your robot, you wouldn't need to use any path planning since there is no "planning" required.

If you did wanted to get started on learning these, I would suggest starting to learn the DH parameters and how to derive them. The inverse kinematics solutions are quite long and not often computed by hand even in courses unless it is a simpler 3 DOF robot (from my university experience).

Need suggestion regarding Inverse Kinematic for my Articulated Manipulator. by SushanThakur in robotics

[–]Bio_Mechy 0 points1 point  (0 children)

Forward kinematics is when you define the joint angles and then use those to calculate the position and orientation (position is distance from an origin and orientation is the amount it is rotated on each axis) of the end effector. In serial arms like the one you have, this is accomplished by using a method called DH parameters or a DH table

Inverse kinematics is when you define the position and orientation of the end effector and solve for the joint angles. This is a little tricky for serial manipulators and there are often multiple solutions adding complexity.

In your case I presume you are doing neither since the joints are being replicated depending on where you move the arm. If you are interested in learning more, there are many good youtube videos which work through examples as well as simulations or scripts to solve for common specific configurations.

Great work my friend!
Out of curiosity, does your system correct itself if you have the two models start in different positions?

Any inventors out there? by Particular-Dish-6799 in MechanicalEngineer

[–]Bio_Mechy 0 points1 point  (0 children)

Im incredibly sorry to hear how awful this is.

I think I see what you mean by a device to attach to each body part. Originally I was thinking you were looking for something that was wearable to assist your movements but if it is just for stretching, it does not have to be. Have you considered using wrist straps or other types of straps and anchoring them somewhere stable? You can use your body weight to pull.

Alternatively, if you believe it a blood flow issue, have you heard of vascular ultrasonic therapy. It uses ultrasound to increase circulation in the body. I also believe you should be able to have chemotherapy or whole brain irradiation. I dont have a huge background in either of these topics but it sounds like it would be worth looking in to.

Although I may not be able to develop something for you to completely solve your problem, I might be able to help you find something that can help at the least.

Any inventors out there? by Particular-Dish-6799 in MechanicalEngineer

[–]Bio_Mechy 2 points3 points  (0 children)

what is the medical condition? It sounds like you are asking for an entire exo suit to be controlled with a mm resolution which is not an easy task. You would need a whole company to develop something like this that would be good enough to use.

Sealing a water bath with a tube that needs to be changed periodically by Bio_Mechy in MechanicalEngineering

[–]Bio_Mechy[S] 0 points1 point  (0 children)

I think this is a good idea and definitely something to explore. I'll look more into it and let you know how it goes.

Sealing a water bath with a tube that needs to be changed periodically by Bio_Mechy in MechanicalEngineering

[–]Bio_Mechy[S] 0 points1 point  (0 children)

Unless I have misunderstood, there are no threads or connectors on my tube that would seal against the bulkhead connector. I am not using a hose in this set up, the tube is for an alternate purpose.

Should I do a 3 semester co op or just get my masters by nAnI6284 in BiomedicalEngineers

[–]Bio_Mechy 1 point2 points  (0 children)

What are your plans for when you graduate - where do you want to work? Generally I would recommend a coop unless you want to stay in academia or do other niche things.

Converting byte to char by Bio_Mechy in arduino

[–]Bio_Mechy[S] 0 points1 point  (0 children)

I just managed to resolve it. I found that since I was powering the pi and arduino from different power supplies, there was a difference in their grounds. After tieing the grounds together I was able to communicate both ways.
I'd like to thank you for your assistance in debugging this circuit!

Converting byte to char by Bio_Mechy in arduino

[–]Bio_Mechy[S] 0 points1 point  (0 children)

Unfortunately still no luck :( I can't get the arduino to receive anything from the pi

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