e-Gizmo Tech Blog

e-Gizmo.com domain had been used by email spammers in the past, and is consequently flagged by many yahoo! users as a spamming domain. As a result, e-mail originating from e-Gizmo.com are automatically sent to the Yahoo! webmail recipient spam folder. Please check your spam folder often and if you are expecting email from us. [...]

• Read Full Entry

The long holidays gave me the opportunity to play around with our new SIMCOM based GSM modem Model 340 for the first time (and write this blog). The Model 340 GSM Modem has undergone and passed our usual verification tests. Production is already underway, and barring unforeseen events, limited quantities will be available for sale [...]

• Read Full Entry

Before we introduced our first Bluetooth module, our EGBC-04, I actually made several attempts to hack some mainstream USB Bluetooth dongle to see to possibility of converting them for UART functions. The driving motivation is low cost. USB Bluetooth dongles are produced in huge quantity. Economy of scale coupled with fierce competition from rival manufacturers [...]

• Read Full Entry

We received words from our supplier that Benq M23 GSM Module, the module where our GSM Modem kit is based, is no longer in production. I guess we received this info a moment too late because by the time we got the notice, M23s have disappeared altogether from distributor’s shelves. This presented a problem to [...]

• Read Full Entry

When it comes to selecting a component to protect a circuit or equipment, a fuse will probably make it to the top of your list. This for a good reason. It is cheap, and does reliably what it is expected to do.  But fuse suffers with at least a couple of annoying disadvantages: it can [...]

• Read Full Entry

My aging HP3325A Synthesizer/Function generator may be more than 30 years old, but it is far from being obsolete. It is a high performance machine built way ahead of its time.  Its ability to generate high quality and accurate signals is unrivalled even by most of its modern predecessors.

Take its frequency accuracy and stability as [...]

• Read Full Entry

e-Gizmo latest kit, a UHF data transceiver, is on final stage of testing and production is underway, with a few units becoming available within the first week of September. This UHF wireless kit is the first of a series of low cost UHF wireless data link slated for development this year by [...]

• Read Full Entry

Engineering was never considered as an easy profession, in fact a lot of people would probably put you on a pedestal when you tell them that you study (or studied) Engineering. It’s not really surprising since a lot of people are intimidated with the sheer amount of numbers that we encounter every day. Come to [...]

• Read Full Entry

Several organs of the human body are known to generate electrical signals that tells a lot of things about our body functions. For example, our heart generate periodic pulse patterns that can tell how well our heart is doing. This is the basis of ECG/EKG analysis. Our brain cells generates multitude of signals collectively called [...]

• Read Full Entry

A lot of hobbyists are still wondering why  do people put a diode across an inductive load, such as relays and motors. Some simply put it without ever pondering, putting their trust to the circuit designer, while others learn it the hard way, perhaps after a few busted transistors or IC.
This blog will show you [...]

• Read Full Entry

Fabricating your own Printed Circuit Board PCB is almost an inescapable task all electronic constructors must somehow go through. The PCB is both important and essential part of the electronic circuit assembly. The final performance and reliability outcome of the circuit being built is dependent to a large extent how well the PCB was built. [...]

• Read Full Entry