Junaid – Page 3 – Junaid's Blog

Switched to Hugo

Mar 1, 2018

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I switched to Hugo as static site generator for my blog on last Sunday. I was using Stagen, a static site generator wrote myself in Node.js, from March of 2016.

PWM is a great way to control brightness of LEDs, speed of motors, etc. Most microcontrollers including STM8S has built in ability to generate PWM signals. In this article I share simple code to generate PWM signal in STM8S microcontroller. However, I don’t write anything about PWM theory other than basic calculation to get required…

Bootloader-less Programming Arduino Pro Mini

Jan 21, 2018

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Junaid

in Electronics

Recently I was creating a configurable timer circuit based Arduino Pro Mini. The circuit has a momentary push button which user can press to turn ON the device. The device will turn OFF itself once the time is elapsed. On starting, Arduino has to turn on a relay to get permanent connection to power source,…

STM8S: Timer 2 with Overflow Interrupt

Jan 20, 2018

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Junaid

in Electronics

In previous post I showed how we can use Timer 2 as simple counter. In this post I am going to show how we can program to have interrupt when its value overflow. As simple experiment, we will toggle an LED in each second within the interrupt handler (also called ISR, Interrupt Service Routine).

STM8S: Use Timer 2 as Simple Counter to Blink LED (without Interrupt)

Jan 15, 2018

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Junaid

in Electronics

Timers inside MCUs are very useful and essential peripherals for timing applications. In this article I will show Timer 2 in an STM8S (specifically STM8S103F3) can be used to blink an LED.

Program STM8S Development Board with ST-Link v2

Jan 5, 2018

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Junaid

in Electronics

I successfully programmed development board having STM8S103F3P6. It is quite simple to make it blink LED. For me, it was second easiest after Arduino Uno to get started. I used SDCC as the C compiler, ST-Link v2 clone as programmer, and stm8flash to flash the binary file through ST-Link.

Program AVR Microcontroller with USBTinyISP and Eclipse IDE

Jan 4, 2018

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Junaid

in Electronics

In this post I will detail out how we can program an AVR microcontroller, specifically ATTiny13a, with USBTinyISP and Eclipse IDE in Linux environment. I am using Ubuntu 16.04 LTS. I hope it will work in other distributions with little or no modifications.

One Channel Relay Module

Jan 1, 2018

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Junaid

in Electronics

Here is the schematic and details for creating one channel relay module. It would be capable of driving both DC and AC current when appropriate relay is used. We can connect output pin of most of microcontrollers including Arduino to control it.

Program Arduino Pro Mini with CP2102 USB to TTL Coverter module

Dec 11, 2017

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Junaid

in Electronics

I like Arduino Pro Mini boards more than other Arduino boards. Mainly because of its minimalist design. But Arduino Pro Mini does not have built in USB interface to program it directly like we do in Arduino Uno. However we can program a Arduino Pro Mini easily using a cheap CP2102 USB to TTL converter…

Cheap Dual Voltage Regulator

Nov 17, 2017

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Junaid

in Electronics

Here is the schematic design to create a dual voltage regulator to power our Arduino and other small circuits. It is built around AMS1117 low drop out voltage regulators.

Author: Junaid

Switched to Hugo

PWM with STM8S

Bootloader-less Programming Arduino Pro Mini

STM8S: Timer 2 with Overflow Interrupt

STM8S: Use Timer 2 as Simple Counter to Blink LED (without Interrupt)

Program STM8S Development Board with ST-Link v2

Program AVR Microcontroller with USBTinyISP and Eclipse IDE

One Channel Relay Module

Program Arduino Pro Mini with CP2102 USB to TTL Coverter module

Cheap Dual Voltage Regulator