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Articles by Dwarakan Ramanathan
Pico Inventor's Kit Experiment 2
2025-09-11 | By Kitronik Maker Raspberry Pi MCU Experiment 2 from the Inventors Kit for Raspberry Pi Pico, in which we explore how to use a phototransistor and take an analog reading. Included in this resource are code downloads, a description of the experiment and also a video walk-through. This resource provides additional help and is not meant to replace the documentation that ships with the kit.
Parameters and Delay Control Using Verilog - Part 24
2025-09-08 | By DWARAKAN RAMANATHAN Verilog is a programmable hardware description language and is generally employed to simulate digital systems. Parameters and delay specifications are two of its most beneficial features that can greatly increase the testability and scalability of a design.
Decoding Op-Amp Datasheets: Input Offset Voltage
2025-08-04 | By Uzair Syed Op-Amps There are multiple ways of thinking about the Input Offset Voltage (Vos) of an operational amplifier. One commonly thrown-around definition is that Vos is the voltage you have to apply between the inputs to zero the output. When I first read about this, I thought it was a slightly confusing way of phrasing it (although in hindsight it sounds simple, which it is).
DIY Simple Sensitive Pinpointer Metal Detector
2025-05-05 | By Mirko Pavleski License: General Public License Analog Arduino A pinpointer metal detector, often simply called a pinpointer, is a small, handheld device used to precisely locate metal targets that have already been detected in a general area by a larger, standard metal detector. After a standard metal detector indicates a target and the user digs a hole or removes a plug of soil, the pinpointer is used to scan that small area.
How to Verify the Clock Source on a Nano
2025-04-25 | By PTSolns Crystals / Oscillators Microcontrollers This tutorial shows how to verify the frequency of the clock source on a microcontroller development board. The process is similar for a range of boards, but we will use the popular Nano. This is a good exercise to do as it helps the user get a more in-depth understanding of the Nano microcontroller development board.
Op-Amp Wonders: Circuit Secrets Revealed!
Welcome to our series on operational amplifier (op-amp) circuits! Op-amps are the workhorses of analog electronics, powering a wide range of circuits that amplify, filter, and process signals. In this series, we'll explore some of the most common and useful op-amp circuits, from basic amplifiers to more advanced applications like filters and oscillators.
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