Category: Engineering

Push button restarts the arduino

Post author By Marcia D.
Post date January 21, 2021
No Comments on Push button restarts the arduino

I have linked an external push red colored button to my arduino but when I press it, instead of giving me HIGH or LOW, it resets the arduino. I am a beginner to this stuff so could someone help?

Tags I have linked an external push red colored button to my arduino but when I press it, instead of giving me HIGH or LOW, it resets the arduino. I am a beginner to this stuff so could someone help?

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Overlapping text problem with TFT SPI 1.3″ ST7789 display

Post author By Marcia D.
Post date January 21, 2021
No Comments on Overlapping text problem with TFT SPI 1.3″ ST7789 display

I have a problem with my ST7789. My display just piles up when I show the current time, or showing some variable value that changes.

Tags I have a problem with my ST7789. My display just piles up when I show the current time, or showing some variable value that changes.

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Problem with tft spi 1.3″ ST7789

Post author By Marcia D.
Post date January 21, 2021
No Comments on Problem with tft spi 1.3″ ST7789

I have a problem with my ST7789, my display just pile up when i show the current time, or showing some variable value that changes every times.

Tags I have a problem with my ST7789, my display just pile up when i show the current time, or showing some variable value that changes every times.

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Compile and Debug on Linux

Post author By Marcia D.
Post date January 21, 2021
No Comments on Compile and Debug on Linux

I started to work on a project for an ATmel328P. The project source file are contained inside a src folder. I have only the makefile (created starting from this example). I can compile without errors and now I’m wonder if it possible to debug the code from linux. I looking for a solution using VS […]

Tags Federico, I started to work on a project for an ATmel328P. The project source file are contained inside a src folder. I have only the makefile (creat

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7 segment displays are not working whatsoever

Post author By Marcia D.
Post date January 21, 2021
No Comments on 7 segment displays are not working whatsoever

/* MODIFIED TRAFFIC LIGHT SYSTEM W/ A COUNTDOWN TIMER FUNCTION BY JOHN SEONG THIS IS A QUITE ACCURATE SIMULATION OF TORONTO’S TRAFFIC LIGHT SYSTEM WHICH INCLUDES TWO 7-SEGMENT DISPLAYS THAT SHOW THE SECONDS LEFT TILL THE PEDESTRIAN LIGHT SWITCHES BACK TO RED. ENJOY! */ const int redLED = 4; const int yellowLED = 5; const […]

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7 segment displays are not working whatsoever

Post author By Marcia D.
Post date January 21, 2021
No Comments on 7 segment displays are not working whatsoever

Arduino Ask Engineering

7 segment displays are not working whatsoever

Post author By Marcia D.
Post date January 21, 2021
No Comments on 7 segment displays are not working whatsoever

Tags /* MODIFIED TRAFFIC LIGHT SYSTEM W/ A COUNTDOWN TIMER FUNCTION BY JOHN SEONG THIS IS A QUITE ACCURATE SIMULATION OF TORONTO'S TRAFFIC LIGHT, // 9 }; for(int i = 0; i < 4; i++) { digitalWrite(segmentPins[i], 0, 0.0, 1, 1 0, 10, 1000); delay(1000); // 1 noTone(buzzer); displayNumber(0, 1000); delay(1000); // 10 noTone(buzzer); displayNumber(1, 1000); delay(1000); // 11 noTone(buzzer); displayNumber(1, 1000); delay(1000); // 12 noTone(buzzer); displayNumber(1, 1000); delay(1000); // 13 noTone(buzzer); displayNumber(1, 1000); delay(1000); // 14 noTone(buzzer); displayNumber(1, 1000); delay(1000); // 2 noTone(buzzer); displayNumber(0, 1000); delay(1000); // 3 noTone(buzzer); displayNumber(0, 1000); delay(1000); // 4 noTone(buzzer); displayNumber(0, 1000); delay(1000); // 5 noTone(buzzer); displayNumber(0, 1000); delay(1000); // 6 noTone(buzzer); displayNumber(0, 1000); delay(1000); // 7 noTone(buzzer); displayNumber(0, 1000); delay(1000); // 8 noTone(buzzer); displayNumber(0, 1000); delay(1000); // 9 noTone(buzzer); displayNumber(0, 1000); delay(1000); noTone(buzzer); // YELLOW digitalWrite(yellowLED, 2.0, 2); displayNumber(0, 2); displayNumber(1, 2); displayNumber(2, 2); displayNumber(3, 2); displayNumber(4, 2); displayNumber(5, 2); displayNumber(6, 2); displayNumber(7, 2); displayNumber(8, 2); displayNumber(9, 3.0, 3); } void loop() { // Read the state of the button int buttonState = digitalRead(button); Serial.println(buttonState); if, 3); tone(buzzer, 4.0, 5.0, 6 0, 7.1, 8.1, 8}; int buttonHitCount = 0; void setup() { Serial.begin(9600); // Car Traffic LEDs pinMode(redLED, 9, binaryValue[num][i]); } digitalWrite(displayPin, HIGH); // Reset the value buttonHitCount = 0; } void defaultState() { // GREEN digitalWrite(greenLED, HIGH); delayMicroseconds(10); digitalWrite(displayPin, HIGH); digitalWrite(greenLED, HIGH); digitalWrite(pedestrianGreenLED, HIGH); digitalWrite(pedestrianRedLED, HIGH); digitalWrite(redLED, HIGH); digitalWrite(yellowLED, INPUT_PULLUP); displayNumber(9, int displayPin) { bool binaryValue[][4] = { {0, LOW); } Clearly something is wrong with my code and the 7-segment displays are off the whole time the program is running. I also posted a li, LOW); } void switchToRed() { delay(5000); // YELLOW digitalWrite(yellowLED, LOW); // GREEN digitalWrite(pedestrianGreenLED, LOW); // PEDESTRIAN - RED digitalWrite(pedestrianGreenLED, LOW); // PEDESTRIAN - RED digitalWrite(pedestrianRedLED, LOW); delay(2000); // GREEN digitalWrite(redLED, LOW); delay(2000); // RED digitalWrite(redLED, LOW); digitalWrite(greenLed, LOW); digitalWrite(pedestrianRedLED, LOW); digitalWrite(redLED, LOW); digitalWrite(yellowLed, LOW); switchToGreen(); } void switchToGreen() { // 15 noTone(buzzer); displayNumber(1, OUTPUT); // 7-Segment Display Pins pinMode(2, OUTPUT); // Pedestrian Push Button pinMode(button, OUTPUT); // Pedestrian Traffic LEDs pinMode(pedestrianRedLED, OUTPUT); // Piezo Speaker Pin pinMode(buzzer, OUTPUT); pinMode(10, OUTPUT); pinMode(11, OUTPUT); pinMode(3, OUTPUT); pinMode(8, OUTPUT); pinMode(9, OUTPUT); pinMode(greenLED, OUTPUT); pinMode(pedestrianGreenLED, OUTPUT); pinMode(yellowLed

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Cannot display a chr string using Wire.read() and u8g2.drawStr()

Post author By Marcia D.
Post date January 21, 2021
No Comments on Cannot display a chr string using Wire.read() and u8g2.drawStr()

I’m still getting myself acquainted with C++, so I expect this is a very basic issue I’m facing. I’ve got an OLED screen connected to a Teensy LC and can display text on it just fine. The Teensy receives bytes via I2C, and I want to reassemble those bytes into strings and display them on […]

Tags "Foobar!"); u8g2.sendBuffer(); delay(1000); } void receiveData(int byteCount){ Serial.print("Data received: "); int i; for (i=0; i, 0, 20, and I want to reassemble those bytes into strings and display them on the OLED. My relevant code: #define I2C_ADDRESS 4 char buf[16]; void, buf); // This line does: u8g2.drawStr(0, I'm still getting myself acquainted with C++, one after the other - but the Serial.println() below the for loop, prints out a blank line. I presume that's related to the fact that the received string doesn't show up on the OLED display., so I expect this is a very basic issue I'm facing. I've got an OLED screen connected to a Teensy LC and can display text on it just fine. The, the Serial.println() within the for loop prints out each letter of the payload as it's received, which in my estimation should print out the whole message

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ESP8266-01E is not responding after successful flash

Post author By Marcia D.
Post date January 21, 2021
No Comments on ESP8266-01E is not responding after successful flash

I have flashed an ESP8266 with the ESP8266 flash downloader that said my flashing had succeeded. But when I sent an AT command from the serial monitor it didn’t respond and the TX/RX LED from the ESP8266 didn’t respond either. I checked all baudrates from 300-200000, but nothing. I was using CH340 USB to TTL […]

Tags 3v ->CH_PD and VCC GND -> GND and GPI0 (only when flashing) TX -> RX RX -> TX I was flashing to downgrade the firmware; the default firmware, AT VERSION 1.1.0.0 I have been frustrated with this, because this is my second module., but nothing. I was using CH340 USB to TTL for flashing wired like this: USB -> ESP8266 3, I have flashed an ESP8266 with the ESP8266 flash downloader that said my flashing had succeeded. But when I sent an AT command from the seri

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Esp8266-01E is not responding after success flash

Post author By Marcia D.
Post date January 21, 2021
No Comments on Esp8266-01E is not responding after success flash

I was flashing esp8266 with esp8266 flash downloader that said my flash has been succeed. But when i send AT command on serial monitor it didn’t respon anything also the TX/RX led from ESP8266 didn’t respon. I check all baudrates from 300-200000 but nothing. I was using CH340 USB to TTL for flashing which the […]

Tags I was flashing esp8266 with esp8266 flash downloader that said my flash has been succeed. But when i send AT command on serial monitor it did