Monthly Archives: February 2013

The LCD decoding looks pretty complex due to the 1/3 bias and hence would require capturing 16 lines (maybe 13 if only one of the back-planes is used for timing) at a resolution capable of resolving the levels (and accounting … Continue reading →

A first look at the LCD traces shows us a number of interesting features: the signals are multilevel, they repeat and there are lots of them! Just picking one of the random images shows us that there are four levels: … Continue reading →

Several approaches to re-using Digital Scales rely on intercepting the LCD driving signals and then decoding the display. This method has some advantages since it leverages the design skill of the scale designers and re-uses all the analogue stages leaving … Continue reading →

The four load cells form the sensor mechanism but to calculate the actual weight and subsequently display it is a job performed by a custom micro-controller and associated circuitry on the small printed circuit board found in the top left … Continue reading →

In each corner of the scale is a load cell, which looks remarkably like the load cell found at SparkFun.  These load cells have a rated capacity of 50kg which given that the scale has a total rated capacity of … Continue reading →

I used reserve and collect from Argos in Whitechapel road, which was the nearest outlet  near work and was amazed that the three people in front of me in the queue were all collecting weighing scales, just the New Year’s … Continue reading →

Over the years there have been many, mostly successful, attempts to take a commercial weighing scale and WiFi enable them but none of these do exactly what I am after.  Subsequently there have also been products WiThings and more recently … Continue reading →