Blog – Page 5 – Valetron Systems

SIM800 series Bluetooth AT commands

March 18, 2017 / 580

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

Learn how to update the firmware of your SIM800 modules

March 9, 2017 / 684

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

Difference between SIM908 vs SIM808 modules

February 7, 2017 / 393

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

Footprint compatible 2G, 3G, 4G modules for using in your M2M designs

January 30, 2017 / 385

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

SIMCOM got acquired by UBLOX ! – Is it a GOOD news or BAD news

January 27, 2017 / 334

Recently in a shocking(for me ) turn of events i heard form my client that SIMCOM (My bread and butter) got acquired by UBLOX (The... Continue reading

Facebook App-Images not loading on mobile data but load on WiFi

December 8, 2016 / 399

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

Don’t use SIM900,SIM908,SIM800,SIM808 modules in USA (2G sunset)

October 5, 2016 / 447

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

868 MHz frequency is not license free in India – LoRa in India

September 18, 2016 / 760

If you are planning on a wireless project which might run on the 868 MHz frequency band in India, then its better to be clear if... Continue reading

EasyEDA Releases Free Online Gerber Viewer for beginners and experts

August 5, 2016 / 372

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

SIM808 GPS Active antenna unable to acquire fix – Solution

May 13, 2016 / 533

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

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