Arduino Uno CH340 programming error

 Error in arduino IDE:

avrdude: ser_open(): can't set com-state for "\\.\COM10"
 

Device manager:

Solution that worked:

Link: https://www.reddit.com/r/arduino/comments/1dz73mz/avrdude_ser_open_cant_set_comstate_for_com4/

1. going into device manager 
2.  open Ports (COM & LPT) 
3. right click on the port the Arduino is connected to
4.  properties 
5.  port settings 
6.  advanced 
7.  clicking the box that says "Enabling the serial port enumerator (SerEnum)" worked.  

 

Linear motor references

1.  DIY tubular linear motor: https://hackaday.io/project/202245-diy-tubular-linear-motor
2. Kollmorgen iron less linear drive: https://www.kollmorgen.com/en-us/products/motors/direct-drive/direct-drive-linear
3. PCB linear motors: https://hackaday.com/2022/05/19/pcb-linear-motors-for-model-trains/
4. HP drive circuit details: https://archive.org/details/hp_journal_1979-02/page/n23/mode/2up
5. 2D planar actuator:https://hackaday.com/2018/05/22/smiling-robot-moves-without-wires/
6. 2D planar actuator 2014: https://hackaday.com/2014/04/23/micro-robots-are-scary-awesome/
7. Tolomatic, Irisdynamics
   
   
   

#12 Helicopter design

 

Hand drawing of the main hub of helicopter with integrated motor

Hand drawing of the main hub of helicopter with integrated motor

LHS46: Maxwell's four laws + 2 force equations

Force equation for Lorentz force left hand thumb rule 

is the force on a current carrying loop of fire in a magnetic field force is equal to NAB Omega sine Omega T where

Force equation considering reluctance force for a permanent magnet

F = B2A_sp/mu_0

Maxwell's first law

Gauss magnetic field law 

The net magnetic field over a closed surface, will be 0 because the magnetic poles exist only as a dipole

Maxwell's second law 

This law is called the Gauss electric field law

the net electric field over a closed surface need not be zero because electric monopoles exist. It will be a function of included electric charges inside the closed surface

Maxwell's 3rd law 

Faradays generator law

V = NAB omega sin omega T

Maxwell's 4th law 

this law is also called ampere circuit law 

it relates the Magnetic field intensity H around a conductor to the current flowing in the conductor and radius at which H is measured.