Arduino Raspberry Pi IOT ESP8266 ESP32
Recently, one customer complained:
I bought a U-blox 7 from you and I’m giving it some tests right now and I’m not getting correct readings from it. I’m an application developer and I had to add a compensation element to both latitude and longitude in order to get “correct” readings from it.
GPS data to google data need conversion
Here is the link about how to do it https://drive.google.com/open?id=1MwNTrqJtst3Dpl9qH8Mt3UJhs87ODdf9
1 . Connect the board like this, one micro usb cable to computer, power the SIM7100A board ( pins is supply and GND, you can use DC Power supply to power the board . Power supply voltage:5V-18V, current about 1.0A, you can adjust the current until the PWR LED turn on
2 . Download document link
http://www.diymalls.com/files/FZ2846-US-sim7100A-board-4G.zip
User name and password is diymall
3 . Press the switch until the 2 LEDs turn on (PWR and STA)
4 . Open device manager, then you will see
5 . Right click to install the driver, you need install the driver manually, find the driver file and install it for about 5 times ( you need choose the right system file)
6 . Then the computer will inform you to install the driver, just click and install the driver . After installing, please find the COM port in the device manager
7 . Open SIMCom Wireless Kit software, choose the Simtech Hs-USB AT Port 9001 (here is COM23), click open port, you can input AT commands in the e.g blank place, like AT, ATI
Amazon link https://www.amazon.com/dp/B078BNWB9X
Servo control generally requires a base pulse about 20MS，if the degree is not 180 degree, you need adjust the base pulse in the Arduino code
0.5ms—0 degree
1.0ms—45 degree
1.5ms-—90 degree
2.0ms — 135 degree
2.5ms— 180 degree
Below is Arduino code:
#include <Servo.h>
Servo servo1;
void setup()
{
servo1.attach(3);
servo1.writeMicroseconds(2500); // = -90°
delay(500);
servo1.writeMicroseconds(500); // = 0°
delay(500);
servo1.writeMicroseconds(1500); // = 90°
delay(500);
servo1.writeMicroseconds(2500); // = -90°
delay(500);
servo1.writeMicroseconds(500); // = 0°
delay(500);
servo1.writeMicroseconds(1500); // = 90°
delay(500);
}
void loop() {}
Test result video links:
sweep from left to right: https://youtu.be/arjDG0e88Bs
From left to middle then to right: https://youtu.be/LZMyuq_Ohn0
amazon US https://www.amazon.com/dp/B074SH8XRK
email sales@diymalls.com
Today, we will learn how to test 9G servo
You need prepare:
9G servo
Servo Tester
USB to TTL serial cable
The connection as below:
9G Servo Servo Tester out Servo Tester in Serial Cable
Yellow S S White
Red + + Red
Brown – – Black
Video link https://youtu.be/1ECQAyoVbqU
Servo link https://www.amazon.com/dp/B012LZKTDO
9g servo link https://www.amazon.com/dp/B074SG74KV
