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Ov7670 camera and esp32
Hi to all, maybe this is an old question but I search in this and other forum about this matter. I'm trying to get a test bar from the camera and I got the esp32 clocking the ov7670 at 8Mhz and using...
View ArticleAccurate compass needed
I have used HMC5883 and LSM303 to mimic a compass in a robot. I observe the following: 1) neither is consistent. When I take a reading at a specific spot pointing to a second specific spot using the...
View ArticleNeed help with code Arduino nano, qtr-8rc and l298n
after uploading this code, the motor 1 is moving backwards only and nothing more than that is happening, here is the line follower code : #include <QTRSensors.h> QTRSensors qtr; const uint8_t...
View ArticleArduino FFT - help please
I wanted to do this project of a visual balancer with 8x8 LED matrix and sound sensor, but the code doesn't work... Would you help me? #include <ArduinoFFT.h> // Assicurati di includere la...
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Problem with Softpot Ribbon sensors
Hi, I'm designing a noiseless violin. I'm trying to read the value of two Softpot Ribbon Sensors (purchased at Sparkfun) using A0 and A1 as analog inputs. I have detected two troubles: It seems the...
View ArticleProblems with ESP32 and PN5180 rfid
Hi, I am having problems interfacing a PN5180 (https://www.aliexpress.com/item/4001084524106.html?spm=a2g0o.order_list.order_list_main.16.12091802I4McDG) with a ESP32 (wroom-32). Everything seems to...
View ArticleCan I Log mA cunsumtpion of a device?
Dear community, I have a DC powered device that I need to take accurate readings of its mA - μA consumption every second (or less or more) and then find out its total consumption in a window of one...
View ArticleIs the ds18b20 probe waterproof?
Hi, I wanted to know if it is possible to immerse the ds18b20 probe completely in water for a long period. Has anyone ever tried? Thank you 5 posts - 5 participants Read full topic
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Elegoo mega2560 r3 wih M6E nano rfid using hardware serial
I am trying to connect my Arduino/elegoo mega 2560 r3 with the m6e nano rfid using hardware serial I made the changes to the code for the library for reading the tag, I made sure the switch is in the...
View ArticleLWNV7 Laser Range Module Communication
Hello, I am currently trying to use an Arduino Pro Mini to communicate with an LWNV7 laser range finding module. I learned all of this stuff a while ago and I am having issues spinning my knowledge...
View ArticleHow to set I2C pins to connect sensirion sps30 to esp32
I downloaded arduino-sps/examples/sps30 at master · Sensirion/arduino-sps · GitHub but there is no provision that I can find in any of the included libraries that lets me set the SDA and SCL pins for...
View ArticleAdvice Needed: Building a Wearable Cattle Monitoring System with Arduino. How...
Hey everyone! I’m currently working on a project idea that I’d love some input on. The goal is to develop a wearable sensor system for cattle that can monitor their heart rate and location in...
View ArticleGenerating ECG Waveform
I am trying to generate ECG waveform with Arduino uno and AD8232 sensor, but not getting a an expected output 6 posts - 3 participants Read full topic
View ArticleAdafruit Fingerprint Print Hex
Hi! I am trying to print the hex of the fingerprint from the fingerprint sensor. The example of Adafruit for this is printing the hex of the templates stored in the sensor itself. What I want to do is...
View ArticleInductive sensors signal confusion
Hello everyone; I control 7 stepper motors with Arduino unoile.I use an inductive sensor to reset the position of 5 of them.omron npn no contact. I reduce 5v with a 24v voltage divider. I cannot read...
View ArticleUse Arduino to send data to MHU (Multimedia Head Unit)
Currently I am having a project to use arduino UNO to get the dust sensor data and send this data to MHU (Multimedia Head Unit) in my car. To be more specific, MHU is like an android device so I see...
View ArticleGetting rid of ripple in npn sensor
I drop the 24v sensor to 5v with a voltage divider.it should be 0v when the npn sensor is active.but my sensor fluctuates around 1v.does the pullup resistor suppress this fluctuation? Or what needs to...
View ArticleSmoke and LPG Sensor
Hi, I am new in programming and I need help with a project containing a smoke and LPG gas detector. I chose MQ2 for smoke and MQ6 for LPG but the problem is that MQ2 does not function with smoke and...
View ArticleI²C and Interrupt pins on Mega, or maybe switch to Due/Giga
I'm working on a project where I am planning to use five potential interrupts (four float sensors and a manual switch for pausing). I was planning to use five of the available interrupt pins (Digital...
View ArticleVL6180X range problem for Arduino
Hi, I tried to use the VL6180X module and a board "Arduino Uno" to measure the distance I used the following code to set up the board. I connected pin ُِSDA to A4 and pin SCL to A5 on the board. But...
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