I am looking for a a very small, durable and cheap pressure sensor that could be placed into a rubber or plastic block about 10mm thick whcih would simply record pressure or impacts of 20-100kg. All I need is it to record impact or no impact.
Why not use a simple contact closure. On one side of an oil filled diaphragm you could have foil. You could also have foil on the bottom. If there is impact they will open and you have a signal. KISS.
sorry only got this message now. Do you know any company that sells oil filled diaphrams or something similar to your suggestion or a company that could make these? much appreciated belatedly! Luan Cuffe!