Questions tagged [arduino]
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9,121 questions
-1 votes
0 answers
21 views
DUAL SIM @ SIM7672SA [closed]
ERROR when trying to switch SIM Card @ SIM7672SA by AT+SWITCHSIM=1 Sent: AT+CGMR Response: AT+CGMR Response: +CGMR: A011B04A7672M7 Response: Response: OK Sent: AT+SWITCHSIM=? Response: AT+SWITCHSIM=? ...
-1 votes
1 answer
36 views
Which amplifier to use for Arduino Talkie output
I am trying to use the talkie library on Arduino Uno to output to a speaker. The talkie output is by default a PWM signal. I tested it with a piezo speaker and it works but it is weak. How can I ...
1 vote
1 answer
100 views
Is it a correct design for an electronic switch, commanded by a microcontroller?
This is a question following this one: What is the best way to stack another switch? I want to stack an electronic switch over a mechanical switch, and have it driven by a microcontroller (arduino ...
- 211
2 votes
1 answer
99 views
What is the name of this linear CCD-sensor component?
I want to use a linear CCD-sensor for my project and I bought this old tablet scanner from 2004 - Genius ColorPage-HR7XE. I disassembled all the parts and took out the PCB with CCD-scanner. But I didn'...
- 35
0 votes
0 answers
50 views
Am I reading dummy CAN bus data? If so, what did I do wrong?
I am VERY new to electronics, but I love this world. My first project is to read CAN bus data from my 2008 Ford Taurus. I got a MCP2515 CAN Bus Module with a TJA1050 Receiver, and an Arduino. I hooked ...
- 1
0 votes
2 answers
90 views
Servo Stuttering Under Load with MOSFET Switch
I am having an issue with a servo motor controlled by a NodeMCU and switched via an N-MOSFET (IRLB8721) on a breadboard. The servo is powered by 8.4V (from 12V/5A PSU via step-down). MOSFET gate ...
- 131
-1 votes
2 answers
84 views
Using MOSFET as a load switch to control multiple servos
So first of all, I don't have a background in electrical engineering, I got handed a project where having some automation would save so much of my time so now I am learning electronics from scratch. I ...
3 votes
3 answers
166 views
Why does ESP32 smooth a 10us square wave?
I am generating a square wave using a CMOS chip running at 12 volts, the time period is 10us, I can see the square wave is perfect on the scope. Now when the square wave is sent to ESP32 using a ...
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