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Analog pins always shows 0
Hello, I am learning with arduino and wanted to try analog pins. First i tried using my potenciometr and output showed only 0 so i thought i got faulty potenciometr, today i tried fotoresistor that i tested to be 100% sure that it works, and it works just fine but still output is always 0. I meassured voltage directly on arduino pins and it showed voltage that there should be. Did anyone have similar problem?
LED Display (Custom PCB)
Hi guys, I found this custom PCB in a food scale and want to add it to my project, normaly 4 weight sensors (with 3 wires each) would connect to these (upper connections). But I want to see if using the other pins there so way I can send numbers there. If you guys have any experience in that let me know please 🙂
electromechanical counter; can I get help on understanding how the mosfet/flyback diode interact?
https://www.youtube.com/watch?v=nU86qobWoYM
I want to emulate this circuit, but I am afraid of shorting my arduino by wiring it incorrectly....
FY -1604b(4) infrared emitter not working
Hey everyone ! I recently bought an infrared emitter (the FY -1604b(4)) and a JST-PH 2mm cable to use in my project, but when I inserted the female JST-PH cable in the male port of the infrared emitter board I realized the cable's black cable was next to the 12v label on the board and the red one was next to ground label, I figured this was probably some sort of coloring issue from the manufacturer and tried the product with my 12.6v battery, I hid the light level sensor and pointed it at a camera I have without an infrared filter (that is sensible up to 840nm) and saw that it didn't work, I tried uncovering it and it still didn't work, I even tried with my tv remote which actually showed up on my camera's display. I tried swapping the cable and still nothing and even tried looking with my multimeter in resistance & continuous mode to see if it was properly wired and the multimeter displayed "0l" meaning there was an issue.
I honestly feel like there is probably an issue with the alimentation port or the light level sensor but I'm not sure and I hope not honestly, but I was wondering if anybody knew if I was missing something or something was wrong and I just didn't realize?
(here is a video of someone utilizing the product and showing how it works : https://youtu.be/HbjDPwX839M)
(the picture is the infrared emitter & the cable)...
Cleaning Magnetic USB Contacts
Hey there! I’m looking to clean what looks like some mild corrosion or oxidation (can’t tell which) on the magnetic side of a magnetic USB Micro B tip, the type shown in the image below. What do you recommend for cleaning the metal rings? Would isopropyl alcohol be a safe cleaning agent?
Thank you for any help!...
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;
...
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...
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: ...
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)....
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.
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.
