Build your list of electronics parts suppliers, from global to local, big or small. It’s always good to find the right parts and get them fast. Read more
Category: Electronics Projects
NodeMCU Expansion Options for IoT Control
NodeMCU expansion solutions provided you with great wireless control of your projects and multiple control pins at low cost. Read more
Growth Strategies for Increasing Ham Radio Proficiency
Strategies are about how we reach our goals. I find all of these growth strategies are very useful for moving from novice towards proficient or expert. Read more
Build Your Ham Radio Performance Portfolio
Everything is connected. Build your performance portfolio as you explore, engage and excel in various aspects of ham radio. Read more
Becoming Proficient in Ham Radio and Other Hobbies
Becoming proficient in ham radio is a journey of moving forward, step by step. My new series of articles will provide a complete process roadmap. Read more
Test Your Cables Regularly with NanoVNA
You should test your cables regularly. Some may go bad, especially cheap or older ones, with poor connectors or breaks. Read more
Antenna Switch Adventures – Looking Forward
My antenna switch adventures have provided a valuable learning opportunity. Especially to reduce noise in RF circuits under Arduino control. Read more
Sainsmart Relay Antenna Switch Disappointment
Well, it’s time for me to declare my DIY antenna switch disappointment. I can’t get rid of the noise n matter what I do. Read more
Arduino Sleep Modes and RFI
Several folks suggested that I try putting my Arduino to sleep in an effort to reduce RFI with my relay controlled antenna switch. So, here are some experiments with Arduino sleep modes. Read more
Reducing RFI with PCF8574 GPIO Expander Board
I was able to use a PCF8547 GPIO Expander Board to reduce but not eliminate RFI from my Arduino. Here’s how that works. Read more