I had been tired of waiting to get my boards assembled, There was lot of time wasted in sending boards outside for assembling . I was falling short of deadlines because the PCB normally take around 10 days to arrive after fabrication, then i need to send them to PCB assembling along with the components and wait for around 5-6 days to get the boards back to testing.
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 and can relay messages on low bandwidth connections in almost real time. It is most of the times implemented on top of a transport layer like TCP and it depends on the transport layer for all kinds of error checking and assurance of the packet delivery.
- Ravi Pujar
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 power when the device is minimally used. Sleep mode 1 and Sleep mode 2.
In this post i will be showing you how to write a simple piece of code using Arduino for SIM900 or SIM800 GSM GPRS module to receive and parse an incoming SMS and take action based on the command present in it. The code is a simple demo of interpreting the data arriving on UART and you can apply this code example to process incoming data on UART of Arduino even if its connected to any other device like SIM900 or SIM800.
This post is to update you guys that i am doing a redesign of the PCB with some modifications to the size and there are some major changes to the power supply frontend.
If you are not in touch with the product design cycle, Check out my previous posts to get in sync with the VALTRACK-V2 design udpates. Let me explain these changes in detail,
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 was already written and tested for VALTRACK-V1 GPS tracker. Now i am able to test and run the SMS and GPRS version of VALTRACK-V2 without any problems. Even though everything went well with the design there were some issues which i will explain below.
This is a update post in the design of VALTRACK-V2 GPS tracker. The PCB i had sent for fabrication have arrived from PCB power and they are beautiful. I had ordered the boards in panel form, because PCB power doesn't support boards of size lesser than 20mm. Since VALTRACK-V2 design came to be around 52mm x 18mm, I had to accept their offer of making the PCB in the form of a panel instead of separate boards.
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 and tested earlier. I made a few sales on the first version named VALTRACK V1 on my website www.valetron.com .
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 these names X7R and X5R capacitors regularly but never bothered to look at what they are. Recently i took some time to study them realised how important they are and here are the details of what i learnt.
In this article i am explaining the 4 points to keep in mind when you are replacing batteries. When we are trying to replace a non functioning or damaged battery, we need to consider the following points mentioned below so that we select the right battery.
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