TechSpark
@techspark
Active Member
Joined: May 2, 2024
Last seen: Aug 11, 2025
Topics: 3 / Replies: 9
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RE: How to interface stepper motor with Raspberry Pi Pico?

@aiden Great explanation! have you tried using the Pico’s PIO with microstepping on the A4988 or DRV8825? I’m wondering if the timing precision still ...

10 months ago
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Answer to: How do I interface a 4–20 mA industrial sensor with an Arduino?

Using a 4–20 mA sensor with an Arduino is straightforward once you understand the basic principle: Arduino analog pins measure voltage, but 4–20 mA se...

11 months ago
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Answer to: Zener Diode vs. Schottky Diode: What Are the Key Differences?

The table below can help you better. Zener vs Schottky.png

11 months ago
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Answer to: Electromagnetic Relay vs Solid-State Relay?

For most Arduino projects, solid-state relays (SSRs) are often the preferred choice. They offer faster switching speeds, silent operation, and excelle...

2 years ago
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Replies: 6
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Answer to: What is the difference between L293D and L298N Motor Driver?

Hey Tristan,The L293D and L298N are both H-bridge motor drivers commonly used to control DC motors, but they have some key differences. I’ve summarize...

2 years ago
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RE: Why do some DC motors come with a capacitor across them while others do not?

@tech-geek Exactly! Even I hardly come across a DC motor with a capacitor across it when I buy them online. But I remember this one time, I opened the...

2 years ago
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Answer to: Why Use a DC Motor Controller Instead of a Potentiometer?

You can use potentiometers for smaller projects, but for bigger projects that need precise control, a potentiometer isn’t the best choice. It causes a...

2 years ago
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RE: Why do some DC motors come with a capacitor across them while others do not?

@ankunegi Thanks for the explanation! If I want to add capacitors to a motor that doesn't have them, what specifications should I look for? Are there ...

2 years ago