Friday, July 2, 2021
3d mouse brain and skull model
Very nice 3d model:
https://www.thingiverse.com/thing:3079327
This is how to make it smaller in file size so it can be imported to Tinkercad
https://3dtomorrow.com/2019/07/17/how-to-reduce-file-size-in-meshmixer/
Wednesday, June 30, 2021
To convert 2-column vectors to 5 column vectors for comparison of grouped data
target=half_decay;
grp=1:5;
grouplength=ones(1,5);
for i=1:5
grouplength(i)=length(find(target(:,2)==i));
end
largest_groupnumber=max(grouplength);
finalmatrix=NaN(largest_groupnumber,5);
for ii=1:5
for iii=1:grouplength(ii)
aa=target(find(target(:,2)==ii));
finalmatrix(iii,ii)=aa(iii);
end
end
Wednesday, February 17, 2021
Language tips: dire
There is a burning need to develope effective therapeutics toward... : Burning to "dire"
Friday, December 4, 2020
Add arrays to a structure
Num2cell is a useful function. The important part is that it could convert an array (m x n) to scalar array (y x 1) so you could add this to a structure.
aa=table2struct(readtable((fullfile(filePath0,'curve','params',file0(1).name))));
%This is the structure you want to add new values to
file1=dir(fullfile(filePath0,'ROI_dark*.mat'));
dark_files=load(fullfile(filePath0,file1(1).name),'Intensity','dff0');
%Then you got two variables, both are two dimensional array. To add them, you have to first convert them into cell:
cc=num2cell(dark_files.Intensity,1);
%Then add them:
[aa.dark_Intensity]=cc{:};
Friday, November 27, 2020
low cost microscopes
1. smart design
https://www.osapublishing.org/DirectPDFAccess/73B7846B-A422-B22A-AA38B1E6131DE5F9_429869/boe-11-5-2447.pdf?da=1&id=429869&seq=0&mobile=no
2. not fancy
https://www.instructables.com/ARPM-Another-raspberry-pi-microscope-made-from-Ple/
control of motion (for adujustment of focus):
https://www.robotshop.com/community/forum/t/retracting-linear-actuator-with-raspberry-pi/43024/6
Since you want to control the speed and the position of the actuator, I would recommend using a linear actuator including a potentiometer like this one: https://www.robotshop.com/en/l16-linear-actuator-351-50mm-12v-w--potentiometer-feedback.html 89
This will allow you to track the position of the actuator. Note that you will need a microcontroller to read the value of the potentiometer.
To control the speed of the actuator I would recommend any regular DC motor driver depending on the specifications of the actuator.
Friday, October 23, 2020
Earphone (Windows sonic for headphones) is back again!
For a while, my Dell laptop does not recognize any earphones after some update of windows. I tried to fixed but failed till today. Here is the link to how to:
https://answers.microsoft.com/en-us/windows/forum/all/windows-10-spatial-sound-options-greyed-out/4a3045fc-92ce-4f7a-a9ba-9adc79c3dd8d
It seems the driver was not correct, but when you updated it, there is a trick. See below the complete solution.
Hi,
Thank you for writing to Microsoft Community Forums.
I appreciate you for providing the details and the screenshot to help us in understanding this issue, we will look into this for you. However, in order to get clarity and to find the root cause of the issue, please reply with the answers to the questions below.
What is the make and model of your system?
Was there any major change or an update on your system prior to which you weren’t facing this issue?
Meanwhile, this issue could occur if Mono Audio is enabled within the Windows Settings. Hence, I would suggest you to toggle Off the Turn on mono audio if it is set to On, by going to Settings > Ease of Access > Audio and check if it helps.
I would also recommend you to click on the Enhancements tab under Speakers / Headphones Properties and check if all the enhancements are turned Off. If the issue persists, I would suggest you to install the default Windows audio device driver and check if you are able to enable the Spatial Sound. To do that please follow the steps below.
Steps to install High Definition Audio Device driver:
Press the Windows key and R key, this will open the Run dialogue box for you.
Type devmgmt.msc and press Enter, this will open the Device Manager.
Expand Sound, video and game controllers, right-click on the driver that is installed and select Update driver.
Select Browse my computer for driver software. In the upcoming window, click on Let me pick from a list of available drivers on my computer. This will open a window for you to select a device driver that you want to install for your hardware.
Select High Definition Audio Device and click on Next. Follow the onscreen procedure to complete the installation.
Restart the system and check if you are able to enable the Spatial Sound feature.
If the issue still persists, please get back to us with the results of the troubleshooting steps suggested above along with the screenshot of the Device Manager window, keeping ‘Sound, video and game controllers’ expanded.
Note: When including the screenshot in your response, kindly make sure that there are no personally identifiable information within the screenshot.
We await your response.
Aaron Summith
Microsoft Community – Moderator
Friday, October 9, 2020
Subscribe to:
Posts (Atom)