x = int(input("What is the number to square root?")) answer = 1 for i in range(2,100): if x%(i**2) == 0: x = int(x/i**2) answer = i*answer print str(answer) + " rad " + str(x)
Monthly Archives: April 2018
Latitude Longitude Overlay of Central Park
Purple Comet 2018 Middle School Problem 11 Scratch Solution
GPS Satellites and DMM Format
Arduino MEGA2560 to Drive U-BLOX NEO-6M GPS Module
1) )Objective:
Use Arduino Mega2560 to get Latitude ,longitude and altitude from U-BLOX NEO-6M GPS module
2)Parts
1 x Arduino Mega2560 board
1 x U-BLOX NEO-6M GPS module
3) About U-BLOX NEO-6M GPS module
The module uses U-BLOX NEO-6M module.The module comes with high-performance ceramic antenna, which is equival of the integrated active antenna.Module comes with EEPROM. All configuration information can be stored in the EEPROM. A variety of configurations to meet your needs.The module also comes with a rechargeable backup battery (to support warm or warm start. after the main power supply power off, back-up battery power can maintain a half hour for GPS receiver data stored).
Features
- Use U-BLOX NEO-6M modular, compact, and excellent performance.
- Comes with ceramic antenna, capability of searching star is quite good.
- You can set various parameters via the serial port, and can be stored in the EEPROM, and easy to use.
- Compatible with 3.3V / 5V level, for easy connection to a variety of microprocessor systems.
- built-in rechargeable backup battery, can retentive ephemeris data
Technical Parameters
Parameters | Value |
---|---|
Power Supply | 3V/5V |
Model | GPS-NEO-6M-001 |
Antenna | ceramic antenna |
Battery | rechargeable battery back-up |
Signal light | LED light |
Antenna size | 25*25mm |
Model size | 25.5mm*31.5mm |
Mounting Hole | 2mm |
The default baud rate | 9600 |
The default output | Compatible with NMEA0183 protocol |
Notice
- Outdoor use
- Note Lightning and waterproof
- Do not support Raspberry Pi 3 B (Because of RPi 3B’s serial port problem, it may have other solution)
4) Circuit connection and graph
mega2560 | GPS Module |
---|---|
5V | VCC |
GND | GND |
RX1(19) | TXD |
TX1 (18) | RXD |
4) Source code:
String data=""; int mark = 0; boolean Mark_Start=false; boolean valid=false; String GGAUTCtime,GGAlatitude,GGAlongitude,GPStatus,SatelliteNum,HDOPfactor,Height, PositionValid,RMCUTCtime,RMClatitude,RMClongitude,Speed,Direction,Date,Declination,Mode; void setup(){ Serial.begin(9600); Serial1.begin(9600); Serial.println(0); delay(1000); } void loop(){ while (Serial1.available()> 0){ if(Mark_Start){ data=reader(); Serial.println(data); if(data.equals("GPGGA")){ //Serial.println(1); GGAUTCtime=reader(); GGAlatitude=reader(); GGAlatitude+=reader(); GGAlongitude=reader(); GGAlongitude+=reader(); GPStatus=reader(); SatelliteNum=reader(); HDOPfactor=reader(); Height=reader(); Mark_Start=false; valid=true; data=""; } else if(data.equals("GPGSA")){ Serial.println(2); Mark_Start=false; data=""; } else if(data.equals("GPGSV")){ Serial.println(3); Mark_Start=false; data=""; } else if(data.equals("GPRMC")){ //Serial.println(4); RMCUTCtime=reader(); PositionValid=reader(); RMClatitude=reader(); RMClatitude+=reader(); RMClongitude=reader(); RMClongitude+=reader(); Speed=reader(); Direction=reader(); Date=reader(); Declination=reader(); Declination+=reader(); Mode=reader(); valid=true; Mark_Start=false; data=""; } else if(data.equals("GPVTG")){ Serial.println(5); Mark_Start=false; data=""; } else{ Serial.println(6); Mark_Start=false; data=""; } } if(valid){ if(PositionValid=="A"){ Serial.println("Position Valid"); } else{ Serial.println("Your position is not valid."); } Serial.print("Date:"); Serial.println(Date); Serial.print("UTCtime:"); Serial.print(RMCUTCtime); Serial.print(" "); Serial.println(GGAUTCtime); Serial.print("Latitude:"); Serial.print(RMClatitude); Serial.print(" "); Serial.println(GGAlatitude); Serial.print("Longitude:"); Serial.print(RMClongitude); Serial.print(" "); Serial.println(GGAlongitude); Serial.print("GPStatus:"); Serial.println(GPStatus); Serial.print("SatelliteNum:"); Serial.println(SatelliteNum); Serial.print("HDOPfactor:"); Serial.println(HDOPfactor); Serial.print("Height:"); Serial.println(Height); Serial.print("Speed:"); Serial.println(Speed); Serial.print("Direction:"); Serial.println(Direction); Serial.print("Declination:"); Serial.println(Declination); Serial.print("Mode:"); Serial.println(Mode); valid=false; } if(Serial1.find("$")){ Serial.println("capture"); Mark_Start=true; } } } String reader(){ String value=""; int temp; startover: while (Serial1.available() > 0){ delay(2); temp=Serial1.read(); if((temp==',')||(temp=='*')){ if(value.length()){ //Serial.println("meaningful message"); return value; } else { //Serial.println("empty"); return ""; } } else if(temp=='$'){ //Serial.println("failure"); Mark_Start=false; } else{ //Serial.println("add"); value+=char(temp); } } while (!(Serial1.available()>0)){ } goto startover; }
5) Result:
Bring U-BLOX NEO-6M GPS module outdoor, open serial monitor window in Arduino IDE(upper right corner)
You will see following data information:
Bogie Assembly Instructions
Trig Identity (New?)
Boston Dynamics Helping Hand
Additive vs Subtractive Color Systems
Plotting in Python Sample
import matplotlib.pyplot as plt import numpy as np t = np.arange(0.0, 2.0, 0.01) s = 1 + np.sin(2*np.pi*t) plt.plot(t, s) plt.xlabel('time (s)') plt.ylabel('voltage (mV)') plt.title('About as simple as it gets, folks') plt.grid(True) plt.savefig("test.png") plt.show()