A requirement came up while developing an Android application for my client for scanning bar code. Obviously I went for the famous ZXing library and downloaded the approximately 120MB source code zip file from Git Hub but I soon started feeling frustrated that I am wasting more time in understanding this huge library.

Looking for a low cost GSM module for using in your projects?. Here are a few GSM modules which I came across while using in my projects.

This article describes the AT commands used to access the functionalities of SIM908 GPS/GSM/GPRS  combo module. When you have come here looking for SIM908's command set you must already be knowing what it is exactly. However, saying it again it's a GSM/GPS combo module manufactured by SimCom mainly for tracking applications. 

When i migrated my code from IAR to Keil v5 for STM32F0 ARM cortex M0 series, The whole STD_PERIPHERAL_LIBRARY of ST started giving this assert_param warning and error. I did try to include the necessary paths needed for library configuration. 

This article is to share my experience using the ST Microelectronics micro controllers. I have been using STM8S, STM8L, STM32, microcontrollers since a long time in all of my prototype projects to Products.

SIM900 is the widely used GSM modem around the globe after EOL of SIM300 which was more popular among students and hobbyists. In India there exist two versions of SIM900, the original SIM900 and the SIM900A. Here are a few things you need to know about the difference between SIM900 and SIM900A GSM modems commands and features.

Digikey is the standard and default electronics vendor chosen by designers and professionals all over the world. Since Digikey is based in USA, ordering components from Digikey to India is going to cost an additional $40 for shipping. This shipping charge is not really a problem for companies and professionals.

This article should give you a brief introduction about the PCB manufacturers in India and also the cost for different types of PCB's charged. I have only designed 2-layer and 4-layer boards so far and the maximum size of the board has been 110mm x 75mm.

This article describes the AT command set for accessing internet using GPRS on SIM300 GSM modem. The SIM300 can only support 2G network with very low data rates, In this example i have used VODAFONE SIM card for accessing internet. 

While designing a microcontroller board for a clients product, I came across a requirement where in the microcontroller was needed to drive a load with a current requirement around 100mA from a single output pin. But the microcontroller output pin is not capable of driving such a high current through the load.