Type4me
Today’s project was designed to solve the need to enter, using a keyboard, the same sequence of characters (a password, a greeting…) many times.
Lipo Fuel Gauge
In my recent review about the Li-po Rider module, I wrote that a little problem was the absence of a chip that could monitor the state of charge (SoC) of the connected battery. You can find several IC for that function; I chose the MAX17043 by Maxim, for the following interesting features: [checklist] it doesn’t require an external sense resistor…
PowerLED Driver
LEDs with high brightness (high power LEDs) offer a lumens / watt ratio very higher than traditional incandescent or fuorescent lamps: This type of LED has to be driven by a constant current source: 3W LEDs have a nominal current value of 350mA. I designed a module to drive a single 3W LED and to change…
Li-po Rider
I’m working on a project that will be powered by a Li-Po battery, so I was looking for a power module that was able to charge the battery and to supply 5V to my circuit. Seeed Studio sells a very interesting module, named Li-po Rider; its main features are: [checklist] supports a single cell Lithium Polymer battery can charge the…
Succhello mountain
Succhello mountain (or Söchèl, as it is called in bergamasco dialect) with its 1541m dominates low and medium Serina valley. The path From Aviatico, you can reach its peak following the CAI path number 519; the walk, with an average difficulty, lasts 1h 45m and it’s well indicated: You start from the park at the top of the village…
BTSwitch
The BTSwitch project was developed to switch electric devices (lamps…) using an Android smartphone. In the following video, you can watch the device working, while in the next pages you can find some technical details… enjoy your reading!
Bluegiga WT11 – Review
Thanks to Farnell, I was able to test the Bluegiga WT11 bluetooth module. The module, which is Bluetooth 2.1 compliant, contains three main elements: [checklist] the tranceiver the chip antenna a complete Bluetooth stack (named iWrap) [/checklist] The power transmission – it’s a class 1 device – is 17dBm that corresponds to a range, in open air, of about 200m. Layout Module’s dimensions –…
Nixie clock: 3 – RTC and expander
In this third blog post, I’m going to show you the logical view of my Nixie clock and two of its main elements: the real time clock, to keep track of the current time, and the expander, to add more I/O lines.
SVG Dashboard
The following tutorial will show how you can create a web dashboard to graphically display data using the standard vectorial format SVG. Introduction I was looking for a way to show in a graphic form data coming from a feed on Pachube: I needed to create a dashboard available via web and without proprietary technologies (Flash…). I found this blogpost by…
Nixie clock: 2 – the driver
In this second post about my Nixie clock, I’m going to show you how to drive those tubes with a microcontroller.