NOT SHOCKING PEOPLE
Steps of Rube Goldberg Circuit
Figure 1: Video of Rube Goldberg Function
Figure 2: Step 1: The Pressure sensor is pressed by a weighted object.
Figure 3: Step 2: The light of the LED connected to the OR gate turns on, informing the user that we must begin applying heat to the temperature sensor.
Figure 4: The gate mentioned in step 2
Figure 5: Image of AND gate on bottom and driver on top. The and gate inputs are connected to the relay input is parallel and the pressure sensor. When both of these are active the counter will begin to function.
Figure 6: Step 3: The heat provided to the temperature sensor allows for a voltage and current to flow into the ompamp, amplifying the current, allowing the relay to switch on.
Figure 7: Step 4: Once the and gate is satisfied with two active inputs, then the driver begins to send signals to the counter, which then sends signal to the digital display, starting the count up from 0 to 9 and then repeating.
Figure 8: Step 5: Once the relay is active, current is applied to a motor which spins this mechanical apparatus, knocking over something important and making something happen for somebody else.
One struggle we faced was getting the relay to switch while connected to the temperature sensor. We noticed that there was not enough voltage going between the temperature sensor output to the relay (only 1V). We first tried to fix this with a 741 amplifier being placed between the two, but that did not amplify the current enough to switch on the relay. Instead, we used an opamp to amplify, which introduced our next problem.
Another struggle we faced was applying the proper gain to the opamp to switch the relay on, even though we knew it could work, we were concerned why it wasn't. What we had found was that we were applying too small of a voltage to the voltage input to power the opamp. After increasing the opamp voltage to 20 V, the amplified voltage and current was able to reach the appropriate amplitude to switch the relay on.