I found out the weight measured by a Korona KFW-55 bathroom scale is encoded using PWM. Using a micro-controlled I can interpret this value and send it to a computer over USB and bluetooth.
about strain gauges:
- a short video about strain gauges: nerdkits
- more details about how different strain gauges: stackexchange
similar projects:
- using the PWM signal: avdweb
- using the analogue signal: scanlime.org
- using the LCD data: stojkovic, SdCardBathroomScale
- using the IR data: irq5.io
Published: 2015-01-29 by King Kévin