A problem in getting values
I was trying to build a thermometer that changed the color of an RGB Led based on the value taken from a standard (starter kit) TMP sensor. Tghe value never got below "130" and never over "160". I...
View ArticleMultiple pins with same port name on Portenta H7
Hello, I have been struggling with accessing the pins on the high density connectors of the Portenta H7. The only consistent way I have found to address the correct pins is to use their port name with...
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Why RC522 RFID Reader isn't working properly
Does anyone know why it's happening? I'm making a project, and in that project there's a part where the RC552 RFID reader will read the RFID tag, and if the tag address is verified, the door will...
View ArticleIncompatible interrupt pins on Portenta H7
Hello, I am facing an issue with Portenta H7 which I cannot seem to solve. Basically I found some combinations of pins that I cannot use whithin the attachInterrupt() method simultaneously. Take this...
View ArticleIntermittent TCP/IP messages
Hi I hope the forum can help. I have been working on skit for some time now and all works except for one bit. My code reads temperature, controllers relays, sends messages about the two and can...
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Powering RP Pico with Battery
I posted earlier about using the Waveshare 1.3" display. I have that working with the IDE environment, so now I added a small power supply made from 3 AAA cells, which is outputting 4.78V and I have...
View ArticleInconsistent SD saving
I'm using a micro SD for a sensor, and I'm recording the data for an hour. Sometimes the data saves, and sometimes it doesn't, with no changes to the code or hardware. Is there any way I can fix this?...
View ArticleDifferent Analog reading, same program
Hi, I have a very weird issue. My Arduino program is simply reading an analog value through A0, then Serial print it. I tested on three Win 11 laptops it reads the value about 70, and I tested on...
View ArticleNodeMCU-32S not recognised
My nodemcu32s is not recognised by arduino ide. Not even ports. I tried two cables and two pcs at one pc i hear the sound when a usb connects but only in device manager not in arduino ide. Mega 2560...
View ArticleWinsen ZE07 CO sensor
I am working on ZE07 CO sensor. I have to interface it with ESP 8266. Kindly suggest some library GitHub - HarvTech/ZE07_CO_UART_Library. Found this one but unable to install 2 posts - 2 participants...
View ArticleInterrupt on embedded motor sequence loop
I have a number pad 5*4 with i2c , L298n motor driver, one channel relay (active low) and Arduino mega 2560 also limit switch. so what my program does is that it takes an input value from the number...
View ArticlePIR sensor for motion alarm
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View ArticleGetting RSSI Value while using ESP32 as BLE Server
Hello everyone, I have a project called tracking robot. In this project, I want to use ESP32 as a BLE server and connect my phone to ESP32. In this link, I want to take the RSSI values and convert...
View ArticleHow to use MPLAB SNAP to flash bootloader on mkrzero
I have my own board which I am trying to flash, but I'm struggling to know how to flash the mkrzero itself as a starting point. I have soldered fly leads to the pads on the back to give access to the...
View ArticleLogically defining the timings
Hello all! I am obtaining sensor values and according to certain value the time is measured. To make things simple the above and below certain level is only considered. This is done via the switch:...
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Recognising end of PWM signal
Hello, I am working on a project on a car and I need to program an arduino that can recognise the end of a signal. the signal can be seen in the screenshot below. The signal in blue is the crankshaft...
View ArticleMotion Alarm using PIR sensor and LED
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View ArticleNeed Help Connecting Arduino Portenta H7 to AWS
Hello everyone, I am currently working with the Arduino Portenta H7 and trying to establish a connection with AWS (Amazon Web Services). I attempted to use the WiFiClientSecure library, but it is...
View ArticleProblem associated with interfacing Arduino UNO with R307S and GSM800L
Please anybody here can solve my problem associated with my Fingerprint Sensor R307S? Whenever I tried to Interface R307S separately it works fine for code given by Adafruit Fingerprint Sensor Library...
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Arduino Nano 33 IoT disconnected from IoT cloud when a source is applied
My arduino nano 33 iot would have the wifi disconnected the moment i plug in an external source (7.4V lithium battery). I have attached an image of my connection as shown. I need to power 20 of these...
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