This is an update post on the miniature GPS tracking device VALTRACK-NBIOT designed for NBIOT network operation. This device is based on VALTRACK-V2 GPS Tracker... Continue reading
This problem we had never observed before in any of the boards we had got assembled earlier. It was a very peculiar problem as if someone... Continue reading
In this post i am excited to share about the new super tiny form factor GPS tracking device we designed for pet tracking and hidden installation... Continue reading
In this post i want to share about the new LTE-CAT-M1 and NBIOT enabled GPS tracker we designed for the UK market. This device is based... Continue reading
In this post i will be listing down the lessons i learnt when i was building hardware products prototypes. I have divided them into multiple posts which... Continue reading
In this post I will explain about the new LORA WAN GPS tracking device we designed for a client in Switzerland. This device is based... Continue reading
This post is regarding the 3D printer i purchased recently from Prusa Printers from Czech Republic. I imported their latest version Original Prusa i3 MK3 to... Continue reading
This post is about some of the design mistakes which I did in designing my GPS trackers and this mistake is associated with selection for the battery... Continue reading
We designed a new version of the VALTRACK V2 GPS tracker, This version is called VALTRACK-V2B because this will not have internal battery support and... Continue reading
In this post i will show you guys how we can automatically synchronize the RTC of our GSM module with the network time. This method is... Continue reading
I had been extensively using the MMA8652 accelerometer in my design because of its small size, easy interface and low cost. The accelerometer fits the... Continue reading
Hello guys, In this post we will see a list of 3G modules that work with Australian 3G network providers. Unlike other countries, the Australian... Continue reading
This post is coming out of frustration caused by ZOHO mail. The free mail hosting provider, who also provides paid email hosting plans has limited... Continue reading
In this post we will learn the differences between the old GSM+GNSS enabled combo modules SIM808 and the new module SIM868. The SIM868 is a... Continue reading
In this post we will learn the differences between the 3G modules in SIM5320 and SIM5360 series. Both these modules from SIMCOM 3G/UMTS/WCDMA module family... Continue reading
I had been experimenting with MQTT and was able to publish and subscribe messages through different local and cloud MQTT brokers successfully. But when it... Continue reading
In this post we will see and understand how we can use the DTMF feature of SIM900 /SIM800 GSM modules for controlling devices or appliances.... Continue reading
Are you wondering how to auto turn on the GSM modules like SIM900 or SIM800. This article is just for you. Although these modules come with... Continue reading
In this post, i will show you how you can send and receive MQTT packets over the TCP connection created using the SIM800/SIM900 GSM GPRS... Continue reading
In this article we will see how we can retrieve the cell location or network location of the SIM900 GSM module. This feature is particularly... Continue reading
What is MQTT? MQTT protocol is one of the simplest and light weight protocol used in the Internet of Things networks. MQTT supports small headers... Continue reading
This article is about explaining about the sleep mode AT commands of the SIM900/SIM800 GSM GPRS modules. These modules support two sleep modes for conserving... Continue reading
Last week the assembled boards have finally arrived and in no time I was able to get the VALTRACK-V2 up and running as the software... Continue reading
This is a introduction post regarding my new GPS tracker design VALTRACK V2. This is a second version of the GPS tracker i had designed... Continue reading
In this article i am explaining the differences between different Ceramic capactior dielectric materials like X7R, X5R, X8R, Z5U,Y5V, X7S, C0G. I used to encounter... Continue reading
This article is about showing you how to use the bluetooth peripheral of SIM800 series GSM/GPRS modules. This video is applicable to all SIM800 series modules... Continue reading
In this article i am explaining how to upload a new firmware to your SIM800 family module. There are multiple modules in the SIM800 series... Continue reading
This article gives a brief description of the difference between SIM908 and SIM808 GSM/GPS modules. SIM808 modules are upgraded version of its previously successful GSM/GPS/GPRS... Continue reading
Recently i had got this requirement to design a GSM/GPRS/GPS tracker product. The initial requirement was about having the product built to work with 2G... Continue reading
Recently i had a problem with images in the Facebook app on my Yu Yunique Android smartphone running Android Lollipop operating system. The remaining data... Continue reading
Right now SIM900 and SIM800 GSM/GPRS modules might seem like the perfect choice for using in your upcoming IOT product design, as they are the... Continue reading
EasyEDA is a Cloud based free online service to design Circuit Schematics, simulate circuits, convert schematics into PCB Layout and manufacture PCBs for end users... Continue reading
I again forgot and faced problems with SIM808 GSM/GPRS/GPS module GPS engine not being able to acquire location fix from the satellites. This time the circuit... Continue reading