kwong – Page 21 – Kerry D. Wong

Makefile for Arduino 1.0

A while back, I created an Arduino plugin for NetBeans so that I could use the full-fledged NetBeans IDE for […]

Last time I did a pretty thorough review of the X-TRONIC 4040 hot air rework/soldering station and shared my own […]

I have used quite a few professional SMD rework stations before, but those professional grade ones tend to be quite […]

I had almost forgotten about the experiment I started late last year using the data logger I built to log […]

I have built quite a few (1,2,3) temperature measurement circuits in the past, but none of those has remote sensing […]

Alexa is a great tool for gathering your website’s statistics. Using its traffic rank moving average, you can see how […]

The power finally came back early this morning. So from last Saturday till today, we have been without power for […]

The Halloween nor’easter knocked out power and internet service last Saturday. Even though I have a backup generator, the internet […]

I received my STM32F4-Discovery evaluation board last week. So I setup the required development environments and did a quick test.

Last time I showed a simple circuit that can be used to measure unknown thermistor parameters. The circuit is basically […]

Over the years, I have gathered quite a few NTC and PTC thermistors. But most of them are unmarked so […]

Typically a synchronous camera flash (e.g. slave flash) is triggered via an SCR. In this blog post, I will show […]

Many of the modern chips such as MEMS accelerometers and gyroscopes only come in surface mount versions and many of […]

The drive circuits for Unipolar stepper motors are usually very simple. In its simplest form, a transistor or MOSFET is […]

I recently bought a new digital multimeter (BK 2709B) and after a couple of months’ use, I am quite satisfied […]