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- 12:21, 27 April 2024 LEDs as Photodiodes (hist | edit) [6,582 bytes] Abassyahbana (talk | contribs) (→Group Members)
- 20:30, 26 April 2024 Sensor for locating sound sources (hist | edit) [34,785 bytes] Suki (talk | contribs) (Created page with "==Team Members== Wang Liyue, Li Jiaqi, Su Qiqi, Wang Tongxu ==Introduction== A microphone array is used to capture sound signals, and the direction of the sound source is determined by analyzing the time difference of sound signals received by different microphones. ==Theory== ===Acoustic source location identification=== ====1-Dimensional==== 500px<br><br> <math>C</math> : Speed of sound in air (~340m/s) <br> According to the mathematical relationship...")
- 02:38, 26 April 2024 Logs (hist | edit) [15,217 bytes] Suki (talk | contribs) (Created page with "===April 2, 2024=== Detail of experiments:<br> Time scale: 2.00ms/div<br> 700px<br> =====''Exp.1''===== 0402_C2Trace00000 (Trigger)<br> 0402_C3Trace00000<br> Condition: L = 2m, x = 0<br> 400px<br> Result: x_pos = 1.7778m<br> =====''Exp.2''===== 0402_C2Trace00001 (Trigger)<br> 0402_C3Trace00001<br> Condition: L = 2m, x = 0m<br> 400px<br> Result: x_pos = m<br> =====''Exp.3''===== 0402_C2Trace00002 (...")
- 10:56, 11 April 2024 Lab (hist | edit) [37 bytes] Suki (talk | contribs) (Created page with "aha")
- 10:50, 11 April 2024 Impedance Spectroscopy for Detecting Phase Transitions in KBr (hist | edit) [26,970 bytes] Laphas (talk | contribs) (Created page with "==Team members== Laphas Precmcharoen, Song Runlin, Gao Jia ==Introduction== This project aims to study the electrical properties of Potassium Bromide (KBr) using impedance spectroscopy. ==Materials== 1. Electrochemical Impedance Spectroscopy (EIS) System 2. KBr samples 3. Two-electrode system 4. Frequency generator ==Procedure== ===Palletizing and Silver painting KBr=== ===Impedance spectroscopy of KBr across different temperture=== ==Results and Discussions== ==...")
- 12:09, 9 April 2024 Thermistor (hist | edit) [1,375 bytes] Christian (talk | contribs) (Created page with "A common temperature sensor is a Thermistor, which is a device with negative temperature coefficient (NTC), i.e., the Resistance decreases with temperature, or <math>{\partial R \over \partial T} < 0 </math>. Therefore, thermistors are sometime referenced as NTC sensors. Their resistances can be well described by a Steinhardt-Hart equation, which relates resistance R and absolute temperature T: <math> {\frac {1}{T}}=A+B\ln R+C(\ln R)^{3}</math> Usually, the coefficien...")
- 15:07, 23 March 2024 Lab Log (hist | edit) [3,831 bytes] Whitney (talk | contribs) (Created page with "== Preliminary Set-up == === Week 7 === Verified that the circuit is working")
- 11:41, 7 March 2024 Quartz Crystal MicroBalance (QCM) (hist | edit) [14,123 bytes] E0309214 (talk | contribs) (Created page with "==Abstract== This project aims to measure the thickness of thin films using a quartz crystal microbalance(QCM). The thin films of interest are grown using magnetron sputtering at the eMagic Lab. In particular, Au will be deposited on a 10mm x 10mm x 0.5mm MgO(001) substrate. Thickness measurements are important in characterizing the sample, and it is helpful to get an estimate of the thickness which serves as a reference when fitting data from spectroscopic ellipsometry(...")
- 15:01, 1 March 2024 Impedance spectroscopy of KBr (hist | edit) [2,147 bytes] Laphas (talk | contribs) (Created page with "==Team members== Laphas Precmcharoen, Song Runlin, Gao Jia ==Idea== This project aims to determine the gravitational constant using the gravitational torsion balance based on the Cavendish Experiment ==Materials== 1. Thin, Lightweight Rod (~ 1 m in length) 2. Small Lead or Steel Spheres (~ 1 to 5 cm in diameters) 3. Large Lead or Steel Spheres (~ 20 cm in diameters) 4. Copper Wire (~0.05 mm in diameter ~ 30cm in length) 5. Small Mirror 6. Laser 7. Ruler or Photod...")
- 03:48, 26 February 2024 Temperature Sensor (hist | edit) [7,290 bytes] Xitong (talk | contribs) (Created page with "==Team members== Duan Xitong, Hu Anqi, Ge WeiFang")
- 01:25, 23 February 2024 Soldering small parts (hist | edit) [1,547 bytes] Christian (talk | contribs) (Created page with "This is a short image sequence on how very small parts are soldered to a circuit board, with the example of the digital microphone. '''Starting components'''")
- 11:25, 22 February 2024 Photodiodes as Single Photon Detectors (hist | edit) [3,571 bytes] Abassyahbana (talk | contribs) (Created page with "In this project, we use several photodiodes as Single Photon Avalanche Detectors (SPADs). We use a light bulb as the light source and grating to vary the wavelength of the light source. We will build a passive quenching configuration to get photons detected. Thus, by knowing which light source is working for the LEDs to detect photons, we can determine band gaps of each LEDs.")
- 11:02, 22 February 2024 High Sensitive Position Sensor based on PDH technique (hist | edit) [31,571 bytes] Angela (talk | contribs) (Created page with "===Abstract=== Using PDH technique to sense the vibration and the movement of the mirror driven by the noise from the environment (acoustic, thermal, etc.) PDH is commonly used in locking to provide a means to control and decrease the laser’s linewidth, and further to stabilize the mode of the laser light. Alternatively, if a stable laser is available, the PDH technique can be used to stabilize and/or measure the instabilities in an optical cavity length. In this pr...")
- 10:57, 22 February 2024 Position Sensor (hist | edit) [878 bytes] Angela (talk | contribs) (→Abstract)
- 10:39, 22 February 2024 Sensor that recognizes specific sounds and steers toward the source (hist | edit) [15,415 bytes] Suki (talk | contribs) (Created page with "A microphone array is used to capture sound signals, and the direction of the sound source is determined by analyzing the time difference of sound signals received by different microphones.")
- 10:16, 22 February 2024 Optical Sensor for UV Radiation (hist | edit) [11,620 bytes] Lijiasheng (talk | contribs) (Created page with "==Team members== ==Idea== This project aims to .... ==Setup== We plan for a setup.... ==Measurements== ....")
- 10:44, 21 February 2024 Gravitational Torsion Balance (hist | edit) [1,890 bytes] Laphas (talk | contribs) (Created page with "==Team members== ==Idea== This project aims to determine the gravitational constant using the gravitational torsion balance based on the Cavendish Experiment ==Materials== 1. Thin, Lightweight Rod (~ 1 m in length) 2. Small Lead or Steel Spheres (~ 1 to 5 cm in diameters) 3. Large Lead or Steel Spheres (~ 20 cm in diameters) 4. Copper Wire (~0.05 mm in diameter ~ 30cm in length) 5. Small Mirror 6. Laser 7. Ruler or Photodiode array to measure the angle 8. Stable...")
- 10:01, 21 February 2024 Gravitaional Torsion Balance (hist | edit) [0 bytes] Laphas (talk | contribs) (Created blank page)
- 10:40, 20 February 2024 Real time temperature alarm (hist | edit) [4,978 bytes] Huanghaowei (talk | contribs) (Created page with "==Team members== Huang Haowei You Mingkai ==Idea== This Project aims to create a system with raspberry-pie and python to real timely monitoring of temperature changes and issuing alerts (sound or text message (only current scenario)） when the temperature exceeds the set threshold")
- 10:28, 20 February 2024 Temperature sensor to issue alerts (hist | edit) [285 bytes] Huanghaowei (talk | contribs) (Created page with "＝＝Team members＝＝ Huang Haowei You Mingkai ＝＝Idea＝＝ this Project aims to create a system with raspberry-pie and python to real timely monitoring of temperature changes and issuing alerts (sound or text message (only current scenario)） when the temperature exceeds the set threshold")
- 10:18, 20 February 2024 Optical Sensor for Noise Flickering (hist | edit) [11,562 bytes] Amanda (talk | contribs) (Created page with "==[Group Members]== Eric Cheung; Lee An Min, Amanda; Loh Jia Ying Whitney ==[Summary]== ==[Set-Up]== ===[Equipment]=== *Soldering Iron *Soldering Tin *Shrink Tubes *Wires *100k Ohm Resistor *LDR Photoresistor: GL5528 / GL5537 *3V DC Power Supply *OpenBCI Board")
- 10:15, 20 February 2024 Optical Sensor for Noise Flickerinng (hist | edit) [237 bytes] Amanda (talk | contribs) (Created page with "==Group Members== Eric Cheung; Lee An Min, Amanda; Loh Jia Ying Whitney ==Idea==")
- 22:53, 19 February 2024 Gas sensor (hist | edit) [27,790 bytes] Jackie (talk | contribs) (Created page with "== Introduction == The semiconductor gas sensor for carbon monoxide/combustible gas detection uses a gas-sensitive material, tin dioxide (SnO2), which has a low conductivity in clean air. The high and low-temperature cycle detection method is used to detect carbon monoxide at low temperature (1.5V heating), where the conductivity of the sensor increases with the concentration of carbon monoxide gas in the air, and to detect the combustible gases methane and propane at hi...")
- 19:14, 18 February 2024 Simple Optical Heart Rate Monitor (hist | edit) [11,970 bytes] YMT (talk | contribs) (Created page with "Here are some thoughts about the project ==Team members== Yang Meng Ting ==Idea== Photoplethysmography is a non-invasive optical technique used in commercial wearables and pulse oximeters to monitor heart rate. Our goal is to reproduce the core concept with a simple DIY device to gain a better understanding of this technology. ==Setup(Tentative)== ===Equipment=== ::Green LED ::Photodiode ::DAQ devices/Arduino Uno (or other microcontroller if needed) ::[maybe a Basic o...")
- 06:47, 16 February 2024 Uploading images and files (hist | edit) [401 bytes] Christian (talk | contribs) (Created page with "You can upload images (and a variety of files) by using the [https://pc5271.org/index.php/Special:Upload Upload file] tab on the left menu. Once uploaded, you can include your image into a text with [image:File_name_of_your_image.png] You can also upload different files; please let me know if the extension of your file is not part of the list.")
- 06:47, 16 February 2024 Writing mathematical expressions (hist | edit) [272 bytes] Christian (talk | contribs) (Created page with "Here is an example of how to write a mathematical expression. Basically, you sandwich a LaTeX version of your expression between a <nowiki><math></math></nowiki> pair. The source code <nowiki><math>\sqrt{a^2+b^2}</math> </nowiki> renders as <math>\sqrt{a^2+b^2}</math>")
- 06:41, 16 February 2024 Project 1 (Example) (hist | edit) [389 bytes] Christian (talk | contribs) (Created page with "This is the project page of an example project. Start the page with a short description what this is about. The structure below is just a suggestion - use your judgement how you want to present your project. Also, feel free to generate additional pages if this page gets too busy. ==Team members== ==Idea== This project aims to .... ==Setup== We plan for a setup.... ==Measurements== ....")
