I first tried a lot of different circuit combinations with alligator clips and different interactions with code. For example, I could have them turn on individually and sequentially (A, B, C) or have them turn on sequentially but stay lit (A, AB, ABC). I tried blinking lights as well, but it didn`t seem appropriate for the scale` concept. I planne
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d my circuit out so that there would be no over laps. But just to be absolutely certain, I used electrical tape to hide the circuits. It`s not the prettiest, but it`s the fastest way to prevent short circuiting. I actually had no clue how I would attach the FSR. A needle wouldn`t go through it. So I used fabric glue instead, which worked surprisingly well. Attaching conductive thread to it was a bit of a challenge too since they were so close together. The form factor of the FSR is not the best choice for what I wanted to achieve because it requires that the contents in the bag be concentrated right ON the sensor. It would be ideal if the sensor ran along the entire bottom of the bag so that the measurement of the weight is evenly distributed. Originally, putting the sensor on the shoulder strap was an option, but because the bag I used had a skinny strap, I decided to put the FSR on the bottom of the bag instead. But in hindsight, I think the values would have read much better on the shoulder since the pressure would be more even and stable compared to random objects shuffling inside a bag. Since applying pressure to the bottom of the bag with fingers also worked, a change of concept could be a discrete signal for a friend to leave a party early where the meter would indicate the urgency of leaving
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to....
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This....
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,....
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the....
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
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