Tech Geek
Tech Geek
@tech-geek
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Joined: May 2, 2024
Last seen: Sep 23, 2025
Topics: 1 / Replies: 15
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Answer to: How can I interface an AI camera module with Arduino?

AI camera modules like ESP32-CAM, HuskyLens, and OpenMV have their own onboard processors that handle heavy tasks such as face recognition, object tra...

6 months ago
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Answer to: How to Test a Potentiometer with a Multimeter?

To test a potentiometer with a digital multimeter, first identify the terminals—the two outer pins are the ends of the resistive track, and the middle...

7 months ago
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Answer to: Shift Register Cascading Issues

This kind of issue is quite common when cascading multiple 74HC595 shift registers. First, make sure you're shifting out the correct number of bits—8 ...

8 months ago
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Answer to: Logic Analyzer vs Oscilloscope?

I often rely on an oscilloscope to see whether a signal is working as expected or to figure out its exact behavior. Since not all signals are digital,...

8 months ago
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Answer to: Arduino vs Teensy: Why will anyone choose Uno or Nano?

If you're a beginner, I would never recommend starting with the Teensy. It's great for advanced users and demanding applications, but the Uno and Nano...

8 months ago
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Answer to: What is the role of CoAP in IoT?

CoAP (Constrained Application Protocol) is designed specifically for resource-constrained IoT devices and networks. It’s preferred over HTTP because i...

9 months ago
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Answer to: How does PID control work in automation?

PID (Proportional-Integral-Derivative) control is a fundamental feedback mechanism used in automation to maintain the stability and accuracy of a syst...

9 months ago
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Answer to: Why are some capacitors polarized while others are not?

Some capacitors are polarized because they offer a higher energy density, meaning they can store more capacitance in a smaller space. This is particul...

12 months ago
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Answer to: Why are ferrite beads used in power supply circuits?

Ferrite beads are essential components in power supply circuits, primarily used for noise reduction and electromagnetic interference (EMI) suppression...

1 year ago
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Answer to: What’s the difference between a Microprocessor and a Microcontroller?

Here are the major differences between the two:  Microprocessor-VS-Microcontroller.png

1 year ago
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Answer to: What is the need of connecting a resistor with LDR for Arduino interfacing?

The resistor is part of a voltage divider, which helps convert the LDR's variable resistance into a measurable voltage that can be read by the analog ...

1 year ago
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Answer to: Why do some DC motors come with a capacitor across them while others do not?

In my experience, most of the DC motors I came across had no such capacitor. Since they are ceramic capacitors(small ones), there's no harm in using t...

1 year ago
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Answer to: Why hasn't Arduino added a USB-C port to the UNO R3?

Hello Yvette,The Arduino Uno has been around for quite some time, with a large user base and many existing projects that rely on the USB Type-B connec...

1 year ago
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Answer to: Can IR Sensors Replace Ultrasonic Sensors in Most Applications?

Hello Jignesh, First, let's see how they differ in construction and working. IR Sensor: IR sensors emit infrared light and detect the reflection f...

2 years ago
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Answer to: BJT VS MOSFET- Current controlled vs Voltage controlled

Maybe this explanation will help: BJT has three regions: emitter, base, and collector, with the emitter and collector, doped to create majority carr...

2 years ago
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