Questions tagged [code-review]
Code review is systematic examination of your Arduino sketch. It is intended to find and fix mistakes overlooked in the initial development phase, improving both the overall quality of software and the developers' skills.
253 questions
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Arduino Mega 2560 + DRV8871: Motor Not Moving with PWM Control
I'm using an Arduino Mega 2560 to control a DRV8871 motor driver connected to a DC brushed motor. The setup includes:
Three buttons: UP, DOWN, and FAST
One limit switch input, where the upper and ...
- 181
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1
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Accelstepper: missing syncro in simple test program
I have the following test code, which I'm running on an Arduino Yùn. Only PulCyan and DirCyan are connected to Arduino, all the remaining pins are not connected (except ground).
If I run this program ...
- 181
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1
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115
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Code for a load cycler seems to be stuck
I am trying to make a battery load cycler to charge and discharge a battery repeatedly for a certain amount of cycles and here is my code:
bool in_charge_mode;
int cycles = 0;
float cutoffvoltage = 2....
- 21
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1
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Keypad library isn't working or I am wrong somewhere [closed]
I am using PICSimLab to simulate a keypad. The configuration of the keypad is as shown in the picture:
and the code is:
#include <LiquidCrystal.h>
#include <Key.h>
#include <Keypad.h&...
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1
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209
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Code review for timer using RTC and OLED screen
I am building a small art project to display my current age with an accuracy of 1/100th of a second. I am using a XIAO SAMD21, a DS3231 RTC, and a 128x32 OLED screen. Here is what it looks like right ...
- 113
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1
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115
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Arduino not reacting sometimes when reading serial commands
When I am sending hex numbers via computer to the arduino leonardo, it sometimes won't react, but the serial monitor says that it was sent. My code;
void setup()
{
Serial.begin(9600);
pinMode(...
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1
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150
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Sounds are being played at the same time
I'm making a school project that allows plants to 'talk'. As in when the plant is in an un-ideal environment (low or high soil moisture, not ideal temperature or humidity and not enough light). I have ...
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272
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error: expected unqualified-id before 'if' if (send) { but all semicolons are available [closed]
I am getting a compilation error: expected unqualified-id before 'if' . Btu I have check all the semicolons . Please help finding my error.
The rest of the message error reads
C:\Users\jecalderon\...
3
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1
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786
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How do I use a transmitter and receiver to send string messages conditionally to a receiver?
I'm working on a project to build a plant monitor that works from the outside with Arduino that picks up light and water values from it's environment then uses a nRF24L01 with an antenna and I've come ...
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2
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138
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Pin outping 1V instead of expected 5V, not hardware related
Heyo everyone !
I'm in a project where I need to send a signal if I detect vaccuum.
I'm sending the signal on PIN 9 but I soon realized that I was only getting 1V.
Tought I was alternating between ...
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2
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how to convert a line of code for arduino to receive a value
im sending the value 1500 from another MCU with
fdserial_txChar(transmit, send >> 7); // send Higher 7 bits
fdserial_txChar(transmit, send & 0x7F); // send Lower 7 bits
and was ...
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1
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79
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Combined code to run a 2-zone radiant floor system. Cannot get 'RadiantMain' to work. Better description in beginning of code [duplicate]
Trying to combine code to run a 2-zone radiant floor heating system. The menu code works perfectly. When I select MenuC 'Run main' it executes to RadiantMain prints test and then returns to menu ...
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406
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DHT11 temperature and humidity sensor Code
I’ve got a question about this code I’ve attached please- would it be correct to read it like this:
After defining the variable temperature and humidity and assigning measurement_timestamp to millis(),...
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2
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1
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148
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Ramping servo motor taking longer than calculated
I'm learning how to code a "BOE Shield bot" with a partner at my university (first year). To clarify for those that do not know: a BOE Shield bot is a small robot equipped with 2 servo ...
- 123
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166
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Single Method for 2 Ultrasonic Sensor is not working as expected
So I have created a method to read and return Ultrasonic Sensor Data. I have 2 Ultrasonic Sensors.
Below is my code.
// Ultrasonic Pins
#define T1 2
&...
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