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Wombat37
Comentado en los Estados Unidos el 5 de septiembre de 2024
I was working on a project to monitor the amount of liquid left in a glass or jar. I thought that using a force sensitive resistor like these from MakerHawk would be a good way to go. They look easy to use and control and the 2kg weight range is ideal for my purposes. After a few experiments I quickly realized that these devices weren’t very precise. They work by being sandwiched between two flat plates with a weight or other force applied across them. The electrical resistance decreases as the weight increases. The Amazon listing shows some very compelling plots demonstrating this working. In practice, I found that even a slight change in the angle between the two plates (e.g. if the load was moved a bit off-center) or if the plates weren’t perfectly flat, made a big difference in the measurement. I had to disband this idea completely and start looking at more complicated load-cells to weigh the glass.I think these FSR devices have utility – perhaps to detect whether a glass is present or not, but to make meaningful weight measurements looked to be a challenge.
Ghost Rider
Comentado en los Estados Unidos el 29 de abril de 2024
As a DIY enthusiast dabbling in Arduino-based projects, I was on the hunt for a reliable and sensitive pressure sensor for another home automation project. The RP-C Thin Film Pressure Sensor caught my eye with its high sensitivity and ultra-thin design, perfect for integrating into compact designs and shrinkifying my projects! The responsiveness is crazy quick!!The durability claim is very interesting, they claim that it's engineered to withstand over a million uses with less than 3% variance in resistance; only time will tell if this holds up. It's sooooo thin that I am interested to see how that plays out! It also is rated to handle some pretty extreme temperatures from -40°C to +85°C, so I am going to use it in a trigger device in some outdoor applications in Texas over the summer! If it can handle that, then it is safe to say it can handle almost anything! LOL!All-in-all, these are super thin and make some pretty bold claims! Great value and I'll update my review if anything changes.
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