Learn on the fly

After taking a break from homebrewing, seeing the incredible creativity and dedication in the ham radio community completely inspired me to dive back in.

For most cases of random number generation, systems use a pseudo-random number generator (PRNG), that is an algorithm that generates numbers that "look" random.

Most of us will have a couple of old infrared remote controllers lying around.

Si5351 is an integrated circuit from Silicon lab for generating a custom clock signal and is very popular among the amateur radio community.

Here is a simple project based on Attiny13a ( which is limited with 1kb flash and 64bytes of SRAM).

Recently i got hold of a TFT lcd module which is listed as "2.0" 3.3V TFT LCD Display Touch Screen With Touch Pen Breakout Board For Arduino" in ebay and Aliexpress.

In this project we are going to dig the details of a floor heating controller with wireless thermostats from LK systems.

Here is a log of my experience in building and boxing a simple VSWR analyzer.

When we need more processing power and better performance with lower power usage, often we need to move to better and more powerful microcontrollers.

Here is a simple tool to convert bitmap images of 84 pixel wide and 48 pixel height to hex codes for using with arduino's and in other avr projects (may work on other images as well, but no guarantee).

Printed Circuit Board (PCB) forms the foundation for many electronic projects and making a PCB at home is one of the useful skills to develop.

ESP8266 is an extremely popular module among hobbyists for building inexpensive and powerful internet connected projects.

Si5351 vfo cum bfo with S meter for hombrew trx Here is a Simple vfo+bfo using Si5351 and a 16X2 lcd with an S-meter.

A simple and stable vfo is an integral part for radio experiments.

Variable capacitor for a simple loop antenna for receiving A variable capacitor is useful in various projects like magnetic loop antennae, crystal radio and in making antenna tuners.

This is a very simple tutorial article for those who want to start using an infrared remote with an arduino for controlling different things.

When you need to move something with your micro-controllers (or arduinos), Stepper motors comes to your rescue.

See code on a character lcd as it is being sent!

I recently came across a small board with stm32f407vg with all necessary components to use in DIY projects.

DDS with Rotary encoder and ili9341tft Rotary encoder is a handy add-on for most of the arduino projects which will serve as a measurement instruments, signal generator, direct digital synthesis (dds) vfo and several other projects.

Sweeping a 14.318 crystal on the dds sweeper After finishing with a simple vswr plotter using an arduino pro mini and a tft, i decided to improve the rf measurement section of the analyser with an ad8307 based power rf meter.

Si570 home brew pcb for testing Si570 is a small usefull oscillator module from Silab (data sheet).

Secure door lock with arduino and rolling code/code hopping with AES In many of my weekend projects, i used some cheap 433 mhz RF modules or nrf23l01 modules for wirelessly controlling lights, temperature sensors, garage door openers e.t.c.

A simple 433mhz rf module and arduino pro mini as a morse code beacon In this project a simple 433mhz rf module is used as a uhf beacon for testing purposes.

Measuring inductance and capacitance are not among the commonly available options in a simple multi-meter.