SIM7100A 4G Development Board for Arduino Raspberry Pi DIYmall

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

DIYmall 0.91” OLED 128X32 SSD1306 for Arduino Display

Connection
0.91’’ oled                   Arduino uno r3
GND                                   GND
VCC                                    3.3V
SCL                                     A5
SDA                                    A4

Download Library from link  http://code.google.com/p/u8glib/
Remove comment from this line //U8GLIB_SSD1306_128X32 u8g(U8G_I2C_OPT_NONE);  // I2C / TWI

Try the example U8gLogo.ino, you can get the result

Product link
https://www.aliexpress.com/item/1/32877168390.html

Email
sales@diymalls.com

DIYmall 9G Servo with Arduino UNO R3 Tutorial

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

 

 

DIYmall 9G Servo and Servo Tester

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

DIYmall VK-172 GPS Module u-blox 7020

The DIYmall Vk-172 is a pocket-sized unit that reads global signals and transmits that data to your computer via USB cable. It’s an especially interesting tool for people developing cutting-edge micro computers, like the Raspberry Pi or Android Mini PC.

It use u-blox 7020 chipset.
It can support Windows Andorid Linux sytem, Raspberry PI and EMGRAND car

Windows Driver Link: https://www.u-blox.com/en/product/u-center-windows
Android driver https://www.u-blox.com/en/product/u-center-androidor
https://play.google.com/store/apps/details?id=com.ublox.ucenter
Russia driver: http://www.drive2.ru/l/5033334/

It is  recommended by ezvid website:
https://wiki.ezvid.com/best-gps-antennas

amazon link https://www.amazon.com/dp/B00NWEEWW8

How to Flash STM32F103CBT6

Connection: LORAM3 and ST-link
GND -GND
3V3-3V3
DIO-DIO
CLK-CLK

Open software STM32 ST-LINK Utility, click target-connect

Then click target-program

Then choose flash file and click start

 

How to connect WS2812 RGB leds with an Arduino UNO

Conncetion with Arduino uno :

Arduino UNO  to  WS2812
5V  to 5V
GND to GND
pin 6 to DI

video link https://youtu.be/M-bn7BE6qNA
ebay link https://www.ebay.com/itm/282225658296
amazon link  
https://www.amazon.com/dp/B0105VMT4S
https://www.amazon.com/dp/B0105VMWRM
https://www.amazon.com/dp/B0105VMUUQ

Code:

#include <Adafruit_NeoPixel.h>

#define PIN 6
#define NUM_LEDS 24
#define BRIGHTNESS 200

Adafruit_NeoPixel strip = Adafruit_NeoPixel(NUM_LEDS, PIN, NEO_GRB + NEO_KHZ800);//NEO_GRBW

byte neopix_gamma[] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2,
2, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 5, 5, 5,
5, 6, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 9, 9, 9, 10,
10, 10, 11, 11, 11, 12, 12, 13, 13, 13, 14, 14, 15, 15, 16, 16,
17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22, 23, 24, 24, 25,
25, 26, 27, 27, 28, 29, 29, 30, 31, 32, 32, 33, 34, 35, 35, 36,
37, 38, 39, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 50,
51, 52, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 66, 67, 68,
69, 70, 72, 73, 74, 75, 77, 78, 79, 81, 82, 83, 85, 86, 87, 89,
90, 92, 93, 95, 96, 98, 99,101,102,104,105,107,109,110,112,114,
115,117,119,120,122,124,126,127,129,131,133,135,137,138,140,142,
144,146,148,150,152,154,156,158,160,162,164,167,169,171,173,175,
177,180,182,184,186,189,191,193,196,198,200,203,205,208,210,213,
215,218,220,223,225,228,231,233,236,239,241,244,247,249,252,255 };

 

void setup() {
strip.setBrightness(BRIGHTNESS);
strip.begin();
strip.show(); // Initialize all pixels to ‘off’
colorWipe(strip.Color(255,25,46), 100);
}

void loop() {
//rainbowCycle(10);
//theaterChaseRainbow(10);
//whiteOverRainbow(10,75,5);
//rainbowFade2White(0,75,1);
for(uint16_t i=20; i>1; i–) {
//whiteOverRainbow(i,50,5);
//rainbowFade2White(i,75,1);
//theaterChaseRainbow(i);
//rainbowCycle(i);
//rainbow(i);
}
test(20);
}

 

void test(uint8_t wait) {
for (int j = 0; j < 256; j++) { // cycle all 256 colors in the wheel
for (int q = 0; q < 4; q++) {
for (int i = 0; i < strip.numPixels(); i = i + 4) {
strip.setPixelColor((i) + q, Wheel( (i + j) % 255)); //turn every third pixel on
}
strip.show();
delay(wait);
for (int i = 0; i < strip.numPixels(); i = i + 4) {
strip.setPixelColor((i) + q, 0); //turn every third pixel off
}
}
}
}

 

// Fill the dots one after the other with a color
void colorWipe(uint32_t c, uint8_t wait) {
for(uint16_t i=0; i<strip.numPixels(); i++) {
strip.setPixelColor(i, c);
strip.show();
delay(wait);
}
}

void pulseWhite(uint8_t wait) {
for(int j = 0; j < 256 ; j++){
for(uint16_t i=0; i<strip.numPixels(); i++) {
strip.setPixelColor(i, strip.Color(0,0,0, neopix_gamma[j] ) );
}
delay(wait);
strip.show();
}
for(int j = 255; j >= 0 ; j–){
for(uint16_t i=0; i<strip.numPixels(); i++) {
strip.setPixelColor(i, strip.Color(0,0,0, neopix_gamma[j] ) );
}
delay(wait);
strip.show();
}
}

// crawling lights with rainbow effect
void theaterChaseRainbow(uint8_t wait) {
for (int j = 0; j < 256; j++) { // cycle all 256 colors in the wheel
for (int q = 0; q < 3; q++) {
for (int i = 0; i < strip.numPixels(); i = i + 3) {
strip.setPixelColor(i + q, Wheel( (i + j) % 255)); //turn every third pixel on
}
strip.show();
delay(wait);
for (int i = 0; i < strip.numPixels(); i = i + 3) {
strip.setPixelColor(i + q, 0); //turn every third pixel off
}
}
}
}

void rainbowFade2White(uint8_t wait, int rainbowLoops, int whiteLoops) {
float fadeMax = 100.0;
int fadeVal = 0;
uint32_t wheelVal;
int redVal, greenVal, blueVal;

for(int k = 0 ; k < rainbowLoops ; k ++){
for(int j=0; j<256; j++) { // 5 cycles of all colors on wheel
for(int i=0; i< strip.numPixels(); i++) {
wheelVal = Wheel(((i * 256 / strip.numPixels()) + j) & 255);
redVal = red(wheelVal) * float(fadeVal/fadeMax);
greenVal = green(wheelVal) * float(fadeVal/fadeMax);
blueVal = blue(wheelVal) * float(fadeVal/fadeMax);
strip.setPixelColor( i, strip.Color( redVal, greenVal, blueVal ) );
}

//First loop, fade in!
if(k == 0 && fadeVal < fadeMax-1) {
fadeVal++;
}

//Last loop, fade out!
else if(k == rainbowLoops – 1 && j > 255 – fadeMax ){
fadeVal–;
}
strip.show();
delay(wait);
}
}
//delay(500);
for(int k = 0 ; k < whiteLoops ; k ++){
for(int j = 0; j < 256 ; j++){
for(uint16_t i=0; i < strip.numPixels(); i++) {
strip.setPixelColor(i, strip.Color(0,0,0, neopix_gamma[j] ) );
}
strip.show();
}
delay(2000);
for(int j = 255; j >= 0 ; j–){
for(uint16_t i=0; i < strip.numPixels(); i++) {
strip.setPixelColor(i, strip.Color(0,0,0, neopix_gamma[j] ) );
}
strip.show();
}
}
//delay(500);
}

void whiteOverRainbow(uint8_t wait, uint8_t whiteSpeed, uint8_t whiteLength ) {

if(whiteLength >= strip.numPixels()) whiteLength = strip.numPixels() – 1;

int head = whiteLength – 1;
int tail = 0;
int loops = 3;
int loopNum = 0;

static unsigned long lastTime = 0;

while(true){
for(int j=0; j<256; j++) {
for(uint16_t i=0; i<strip.numPixels(); i++) {
if((i >= tail && i <= head) || (tail > head && i >= tail) || (tail > head && i <= head) ){
strip.setPixelColor(i, strip.Color(0,0,0, 255 ) );
}
else{
strip.setPixelColor(i, Wheel(((i * 256 / strip.numPixels()) + j) & 255));
}
}
if(millis() – lastTime > whiteSpeed) {
head++;
tail++;
if(head == strip.numPixels()){
loopNum++;
}
lastTime = millis();
}
if(loopNum == loops) return;
head%=strip.numPixels();
tail%=strip.numPixels();
strip.show();
delay(wait);
}
}

}
void fullWhite() {

for(uint16_t i=0; i<strip.numPixels(); i++) {
strip.setPixelColor(i, strip.Color(0,0,0, 255 ) );
}
strip.show();
}

 

// Slightly different, this makes the rainbow equally distributed throughout
void rainbowCycle(uint8_t wait) {
uint16_t i, j;

for(j=0; j<256 * 5; j++) { // 5 cycles of all colors on wheel
for(i=0; i< strip.numPixels(); i++) {
strip.setPixelColor(i, Wheel(((i * 256 / strip.numPixels()) + j) & 255));
}
strip.show();
delay(wait);
}
}

 

void rainbow(uint8_t wait) {
uint16_t i, j;

for(j=0; j<256; j++) {
for(i=0; i<strip.numPixels(); i++) {
strip.setPixelColor(i, Wheel((i+j) & 255));
}
strip.show();
delay(wait);
}
}

// Input a value 0 to 255 to get a color value.
// The colours are a transition r – g – b – back to r.
uint32_t Wheel(byte WheelPos) {
WheelPos = 255 – WheelPos;
if(WheelPos < 85) {
return strip.Color(255 – WheelPos * 3, 0, WheelPos * 3,0);
}
if(WheelPos < 170) {
WheelPos -= 85;
return strip.Color(0, WheelPos * 3, 255 – WheelPos * 3,0);
}
WheelPos -= 170;
return strip.Color(WheelPos * 3, 255 – WheelPos * 3, 0,0);
}

uint8_t red(uint32_t c) { return (c >> 16); }
uint8_t green(uint32_t c) { return (c >> 8); }
uint8_t blue(uint32_t c) { return (c); }