RAK831 LoRaWAN Gateway

March 10, 2018

Previously, I covered the Dragino LG01 Single Channel LoRaWAN Gateway, a low cost solution good for testing basic LoRaWAN communication setups. I needed a better gateway and I was about to go for the german IMST IC880A gateway when I stumbled upon a Chinese variant named RAK831, that was cheaper and offering the same features. The RAK831 and the IC880A boards are almost identical in terms of Semtech chips used…


Dragino LG01 LoraWAN Gateway

September 5, 2017

I already covered the impressive LPWAN LoraWAN technology with a proof of concept remote air quality monitoring unit based on the BME680 from Bosch and the RN2483 from Microchip, in a previous post. The device, capable of measuring temperature, humidity, pressure and VOCs can run for months on a single cell battery, thanks to the low power LoraWAN communication solution. It can send real time data on distances up to…


CNC Router for DIY PCB manufacturing

August 15, 2017

I’ll have to go straight to the point: get yourself a CNC router now! I’m serious: I used to make my PCBs dual layer and in the kitchen, as Hackaday folks like to show on their Twitter from time to time, but looking back, I can’t understand how I’ve done without a CNC router so far. And if you’re like me, and you probably are since you’re on this blog,…


Yihua 8786D Hot air station with soldering iron

August 5, 2017

I don’t change my tools too often, and those that I get stay with me for a long time. These are the things that extend my hands and allow me to freely express my creativity. At least for when it comes to electronics. I already have my excellent ZD937 and the Yihua 858D and these two stay side by side in my daily activities. But recently as a young parent,…


Full metal Delta 3D Printer

January 26, 2016

Finding the right 3D printer is not an easy task, considering the many options on the market. Many sellers claim unprecedented innovation, when instead all they offer is just another open source design at inflated prices. I knew I wanted a delta design, and a robust frame to better control vibrations, preferably metal. For the rest the more hackable the platform it was, the better. I opted for the one…


Yihua 858D Hot air rework station

September 19, 2015

I tried, but there was no way to properly solder the BME280 tiny sensor using the soldering iron alone. After destroying one sensor and almost damaging the PCB, it was clear I needed a hot air station for my work on the uRADMonitor-D project. I opted for the 858D, also reviewed on Dave’s EEVBlog. It’s my first time using a hot air station and the BME280 is really a very…


Comparison of dosimeters

April 3, 2015

Like with all measurements, it will be very hard to find two different devices indicating the same readings, especially when we demand increased precision. We now know that there are no such things as absolute time, absolute space, there are no synchronous clocks. It is the same with the absolute measurements, and in some cases it’s becoming more relevant to observe the change: if we see increasing values, we know…


Bausch and Lomb Microscope

August 4, 2012

Read a post on my new acquisition, a Bauch&Lomb compound binocular microscope, a high quality tool, put to some good use to capture a few micro photographs. It can get up to 1000X with its current optics.


Atten ADS1102CAL Oscilloscope

June 17, 2012

For my first oscilloscope, I opted for the Atten ADS1102CAL. A few months after, I could say I’m extremely happy choosing this robust device, that does an excellent job on my workbench.


Projection keyboard

May 26, 2012

The laser keyboards use laser and infra-red technology to create the virtual keyboard and to project the hologram of a keyboard on a flat surface.


ITON Bluetooth Keyboard and Mouse

November 7, 2008

A review on two bluetooth HID (Human input device) devices, manufactured by ITON.
The PA-BK02 bluetooth keyboard and the PA-BTM02 bluetooth mouse are some nice wireless alternatives to your current input hardware.


FingerTouch PRO custom layout guide

September 22, 2008

An article showing a quick way to create your personalized software keyboard for Pocket PC. Do you need a specific key? Would you like your keys to be bigger / arranged in a different order? Read this article for more.