Dilshan R Jayakody’s Web Log

As an audio enthusiast, Audio-Technica has long been one of my go-to brands for reliable gear.

In today's software development landscape, local Large Language Models (LLMs) offer unprecedented privacy, zero latency, and freedom from subscription fees.

The primary objective of the Tiny Basic for Arduino project is to replicate that nostalgic C64 style programming environment utilizing modern, low-power MCU platforms.

The TD4 is a famous 4-bit CPU featured in the book How to Build a CPU by Kaoru Tonami.

The TDA2005 is a very popular audio amplifier chip that many of us have used for years in car stereos and home DIY amplifiers.

I found the ZZRX-40 receiver while going through some old issues of QEX magazine.

I recently received a DIY two-tube FM receiver kit from one of my Chinese component suppliers for review.

For an amateur radio operator, having a real-time dashboard is essential for monitoring band conditions and identifying DX opportunities.

This project began with a simple idea: to build a fully functional digital desk clock using only classic CMOS logic ICs that are still readily available in local electronics markets.

The BG7TBL FA-5 frequency counter has become recognized as an excellent choice for experimenters and radio enthusiasts, offering high-spec performance comparable to branded units.

This is a simple surge arrester array that I made in my free time.

The Arduino Mini Amplifier is a compact audio system that merges vintage analog and modern digital components.

For some time, hobbyists have relied on dedicated sound generator ICs, such as the UM3561, UM3562 to build compact alarm and siren circuits.

Managing liquid levels in tanks is a common challenge across home, agricultural, and industrial automation systems.

Ecowitt2APRS is a new open-source Linux service that I have been working on for the past few weeks.

When it comes to automation and control systems, there's often a need for multiple digitally controlled output terminals with high-voltage handling capabilities.

This blog post discusses the engineering design, construction, and performance evaluation of a 4-element Yagi-Uda antenna specifically optimized for the 2-meter amateur radio band, focusing on the frequency range of 144MHz to 145.5MHz.

This project focuses on a simple yet powerful FM stereo tuner module.

The Sony ICF-SW7600GR, a well-known portable shortwave receiver, has built a solid reputation for its performance and reliability.

Pink noise is an essential tool in audio testing, widely used for analyzing speaker systems, room acoustics, and crossover networks.

The LM386 is a low-voltage audio power amplifier designed by National Semiconductor, which is now part of Texas Instruments.

Simtelic Music Module is a user-programmable module that uses RTTTL data to store and play melodies.

In this blog post, we will walk you through the process of developing a monolithic kernel call tinyOS from scratch by following tutorials from JamesM's and Bran's Kernel Development guides.

The HX711 is a versatile integrated circuit (IC) designed for precision analog-to-digital (A/D) conversion, particularly suited for strain gauge load cell applications.

Have you ever faced the frustration of dealing with an overflowing tank or a pump running dry?