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Arduino and oled screen i2c problem

Hi guys I have an i2c oled screen with Arduino one but I can't make it work with the adafruit_SSD1306 library but with the u8g library it works how can I do them or try them all but nothing can anyone help me?

GPS6MV2 problems

I am trying to get some input from my gps and I have a problem. It is that I don't get any input from the gps. I am a noob. Here is my code: ```#include <SoftwareSerial.h> int RXPin = 3; int TXPin = 2; ...
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Trying to add cellular to ESP32C3 (Seeed Studio) with BK-SIM7080G

Hi, I’m trying to add cellular to my project but I am not sure if I am powering the BK board correctly. I need small smd components because space is very tight. I also don’t know what ESR/ESD to choose. Is this diagram correct or are there improvements that should be made? The battery is also connected to something else, which will be our main method to monitor battery life. Thanks. SIM7080G module datasheet: https://www.texim-europe.com/Cmsfile/SMM-SIM7080G-Hardware-Design-V1.04-DS-200525-TE.pdf BK-SIM7080G datasheet: https://img.yfisher.com/m0/1692268963889-bk-sim7080g-board-user-manual-v10.pdf ESP32-C3 XIAO datasheet: https://files.seeedstudio.com/wiki/XIAO_WiFi/Resources/esp32-c3_datasheet.pdf...
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Battery powered project

Hi Everyone! So I'm making this portable projects with consists of ESP32s and brushed DC motors. I want this project to be battrey powered via a 3.7v Li-ion battery. But the issue is for the circuit, I need a stable 5v supply. I tried using a DC-DC boost converter clocked at 5.3v, but the ESP32 doesn't seem to happy with that voltage. So I finally concluded that I'll use a 3.7v and 1.5v cell in series to get 5.2v. Can anyone help me in whether this will work or not

ATS2855

Hey Does anyone know anything about the ATS2855? I got a chinese gaming controller and need to dump the firmware from the chip (the controller has 4 buttons on the back, 2 back buttons and 2 to programm them with other controller buttons. and i wanna try to make them work as normal buttons instead, via firmware if possible) All i can find online is: ...
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Can't show anything on a WS2812B 8x8 matrix (arduino nano)

Hi, so... I recieved 4 RGB WS2812B 8x8 matrix purchased off of aliexpress over here, and since then I've never been able to show anything with them. On the picture I have the purple wire (DIN) connected to the D12 pin on my arduino nano, and the two other +5V and GND pins are connected to the 5V and GND pins on the arduino. I've tried everything in the FastLED library, lots of pins (4, 5, 6, 12, 11, 10, 9, all digital), every WS2812Controller type when declaring FastLED.addLeds<TYPE, DATA_PIN, RGB>(leds, NUM_LEDS);, and a bunch of FastLED examples. I also tried the NeoPixel libraries, but with no result. Nothing works. All I have is the following information: - When declaring only 1 led (instead of the 64) nothing happens. Every led is off. - When declaring 64 leds (or more) the first blue led seems to blink with very low intensity an very very shortly (the LOW time seems to be much longer than the HIGH time)....
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Will the hc-sr04 be able to give inputs and outputs if i connect the wires in this way?

Sorry, I'm terribly new to this stuff and our teacher told us to create a product. No tutorial given. He just told us to do it on our own.
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NFC/RFID reader with two transponders

I misplaced the data sheet for the module in the picture. I am finding out that I really needed that to understand what I have. Can anyone point me to where I need to look to find the information I need to understand what I have.
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thermal camera programing

so I'm trying to set up a thermal camera (amg8833) and hook it up to a NTSC/PAL (Television) TFT Display - 2.0" Diagonal, anyone know how to go about wiring and coding, I've never coded a camera or any type of recording device. i know it is possible to code the camera on Arduino seen here: https://www.electroniclinic.com/amg8833-thermal-camera-using-esp32-tft-display-thermal-imaging-camera/, but i need it done on this specific display to fit inside some home made NVGs, anything helps. (I haven'...

Old Drone Camera Hacking

I found this camera module that used to be part of a cheap drone I bought close to 7 years ago. upon further looking, I noticed 4 empty pads and assumed they were debug pins, since it says "UART" somewhere on the middle of the module. I identified the power pins and soldered a USB cable to it. after plugging it to my computer, the module powered up but wouldn't appear on lsusb nor a serial terminal like coolterm. after a little bit of digging on the internet, I found a post mentioning a similar module to mine, but theirs appears to not have those 4 pins on the side. https://electronics.stackexchange.com/questions/490422/controlling-3-pin-pinhole-camera-from-drone-using-arduino one thing I could confirm was taking pictures and videos when hooking the yellow wire to power. ...
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Arduino Mega 2560 Pro (Embed)

Being new to the Arduino world, I must say its been a roller coaster of a ride. I'm a flight simmer - specifically in X-Plane. I use a product called MobiFlight which is an application that communicates between X-Plane and my Arduino Mega 2560 Pro. What I'm finding that the Arduino IDE (with the Agent running) does not see the device. Its been challenging that the Mega 2560 Pro does not seem to be a popular device -- even for the Arduino app?
I have to admit, like I said, being new to the Arduino world, I'm still in the process of setting up and building my project which will contain 3 rotary encoders to start and will build from there with SPST switches.
Is there something I'm doing wrong with Arduino app that its not seeing the Arduino? withinn MobiFlight, I do a process call "Upload current firmware" to the board. This all works (directly to the board). Until I start to add devices (switches and encoders) to my board and startup MobiFlight from my sim computer, I cannot do anything further with the board until then. ...

Controlling A Video Overlay Device

Is it possible to have a Teensy 4.1 print to a Video Overlay Device? Here's an example of something I could use https://www.videologixinc.com/sdi-hdmi-video-overlay-devices/proteus-hd-video-overlay-device/

ESP32 with dual ethernet

Hi, I was wondering if it is possible to connect two ethernet ports to a esp32 or if I might run into problems there. I always only find connecting one W5550 to the ESP but I havent found anything about connecting two. I was also maybe thinking of getting a WT32-ETH01 and connecting an additional W5550 module to it .. would that be possible? Thx...

Hardware for temperature sensor system

Hello everyone, I am quite new at electronics, but would like to build a temperature sensor system, with a few sensors communicating by Wifi. This is the hardware i have for now....
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⚠️ The ESP32 Cam isnt working

It worked at the shop when the shop owner checked it with compiling the code to it and after 5mins when i got home and i tried it by connecting to my laptop with a Micro USB cable the ESP wifi dosent showedup. And after i compile the example code by my self and check the Serial Monitor it shows
E (23) camera: Camera probe failed with error 0x105(ESP_ERR_NOT_FOUND)
Camera init failed with error 0x105
E (23) camera: Camera probe failed with error 0x105(ESP_ERR_NOT_FOUND)
Camera init failed with error 0x105
Can someone help me?...

Cant connect DFPlayer mini to ESP8266

Hi guys, im working on arduino to create a song system using DFPlayerMini and a ESP8266 card. Im tired, i tried something and no one solution work, the card wont connect to DFPlayer, what can i do ? Code :...
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module cam OV7670

i have get this cam but withouth shield so, i have do to connect wire by wire on arduuino une rev3 now, indidnt make it work. my prject is to put this cam on arduino or other esp board and sim900A module for send me txt when i hjave wrong move at ehome w<hen im out , fezw people told me than i should use esp32cam because its one bopard moren compatible but i have reda than its possible to use 2 arduino for better result and efficient task top manage this cam. bad luck, i dont have (jnow) , enough knoledge for make it well. if some one can help me it will be realy nice...

Motor & diode.

Okay, with this I'm struggling yo understand the current flow of this Back-Emf and this diode. As far as I get it; When the motor is off, (obviously there's back emf i know that) basically it says it let's current flow from the motors negative to the positive. How im not sure. Because ro me hsi diode seems the wrong wsy around for that....
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help with arduino micro

hello I want to connect my arduino to my PC as a gamepad cause i want to build a Steering Wheel I cant get it to work can someone help?
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TF-Luna

I am using a esp32 connected to a TF-luna with a BNO connected as well. I am running the sensor and experiencing a delay 3-4 seconds before readings are updated. Is there anyway to fix it.