### Agenda: 12:00: Assignment/Website Review and continued introductions. <br> 12:30: <a href='https://learn.sparkfun.com/tutorials/how-to-power-a-project'>Power</a>, <a href='https://learn.sparkfun.com/tutorials/motors-and-selecting-the-right-one/dc-brush-motors---the-classic'>motors</a> / <a href='https://www.makerspaces.com/how-to-solder/'>Soldering</a>. Safety reminders: <br> <ul> <li>Wear eye protection. </li> <li>Use fume extractors.</li> <li>Don't touch hot stuff. </li> <li>Lead waste goes in lead waste tubs. </li> <li>Wash hands after soldering.</li> </ul> 1:30: Tools, Processes, and Materials - <b>Saw Station:</b> Use a [hand saw](https://www.youtube.com/watch?v=F5YmVHB3P5I), use the [scroll saw](https://www.youtube.com/watch?v=5_fenDdm4oQ). Use [hand files](https://www.youtube.com/watch?v=h4KaiG7CpSQ) and the [bench grinder](https://www.youtube.com/watch?v=OvW4MVvk69A). - <b>Drill Station:</b> Use a [hand drill](https://www.youtube.com/watch?v=d6qzo3LYTR4), use the [drill press](https://www.youtube.com/watch?v=Nu9tYcld7ck), and [tap a hole](https://www.youtube.com/watch?v=CWCQ-hlQvdY). - <b>Assembly Station:</b> - Measure something using micrometer, calipers, protractor, and level. - Joining: [nuts & bolts](https://youtu.be/zIGz8STM-fI), [screws](https://youtu.be/5cA9bZRHpZE), nails, and glue. - Experiment with gears, bearings, belts, pulleys. <h3> Labs:</h3> <p> <!-- Use the <a href='../../lab/electronics/electronics.html'> Electronics basics</a> page and its links. --> Build mechanisms using the Automata Tinkering Kit. Work on kinetic sculpture assignment. Make sure you're comfortable with the skills covered in class. </p> <h3> Readings:</h3> <p> <a href='../../lab/tools/mechanisms.html'>Mechanism design</a>, <a href='https://docs.google.com/presentation/d/1ZqWlTu3C6ChjgVlh-ZcghNG3y8bAC1Wpp0kyp3fGtFE/edit?usp=sharing'>Principles of mechanical design</a>, chapters 4 and 8 of <a href='http://mars1980.github.io/resources/making_things_move.pdf'> Making Things Move</a>. <br> <a href='https://learn.sparkfun.com/tutorials/how-to-power-a-project'>Power</a>, <a href='https://learn.sparkfun.com/tutorials/motors-and-selecting-the-right-one/dc-brush-motors---the-classic'>motors</a>, <a href='https://www.makerspaces.com/how-to-solder/'>soldering</a>. <br> Review <a href='https://learn.sparkfun.com/tutorials/voltage-current-resistance-and-ohms-law'> Ohm's Law</a> and <a href='https://learn.sparkfun.com/tutorials/analog-vs-digital'>Analog vs. Digital</a> inputs <br></p> <h3>Assignment: </h3> <p> <ul> <li>Create a kinetic sculpture. Include circuitry to move your sculpture. </li> <li>Use a multimeter to measure the voltages in your circuit. Use Ohm's law to calculate current through the circuit. </li> <!-- <li>Use the Microcontroller Analog in (ADC) to measure the voltage of a potentiometer, or other voltage-divider-based sensor.</li> <li>(Optional) Use tools like TinkerCAD to simulate your circuit and/or tools like Fusion 360 to design and simulate your mechanism.</li> --> <li> Document your work and learning. <a href='../../lab/website/video.html'>Include at least one video/gif</a> of your sculpture. </li> </ul> <p> Some good precedents include <a href='https://sophiecwebster.github.io/PHYSCI-70/03_kinetic/index.html'>Sophie's flock of birds</a>, <a href='https://kassialove.github.io/PS70-assignments/week3.html'>Kassia's dancers</a>, <a href='https://tomkinsc.github.io/harvard-ps70/2020-02-13/'>Chris's Geneva drive</a>, and <a href='https://mturner6300.github.io/PHYSCI-70/simple-demo/01_intro/week3.html'>Megan's bird</a>. Some examples of kinetic sculptures made with common household supplies can be seen from last summer's course, <a href='https://silviafesta.github.io/PHYS_S-12/Assignments/assignment3.html'>especially Silvia's clever use of string</a>, <a href='https://michelleyl78.github.io/PHYS_S-12/04_class/04_class.html'>Michelle's method of making circular cams</a>, and <a href='https://azswartz.github.io/PS-70/week3/week3.html'>Avi's automatic highlighter. </p> <h3> Resources: </h3> <p> Modeling gears in Fusion360 from scratch is a useful exercise. But you can also use a script to help automate the process. The first half of <a href='https://www.youtube.com/watch?v=ZakT54JIhB8' >this video</a> shows you how. <br> Look up artists like <a href='https://www.youtube.com/user/dreamingmachines/videos' >Arthur Ganson </a> and <a href='https://www.youtube.com/watch?v=0_22x26qYPA' >others</a>. These pieces probably took more than a few days to complete, but likely many of them started with study models made from things like cardboard and simple DC motors. <br> Here is a fun old reference for mechanisms: <a href='http://507movements.com/' > 507 Mechanical Movements</a>, and <a href='https://www.fivehundredseven.com/'>offshoots</a>. <br> Rob's <a href='https://roberthart56.github.io/projects/telephone_box/index.html' >example</a> of using simple materials and joining in a prototype. And some <a href='https://roberthart56.github.io/SCFAB/SC_lab/Projects/Quick_prototypes/index.html'> extremely rapid</a> prototypes<br> Adhesive advice at <a href='thistothat.com'>thistothat.com</a><br> Drilling a centered hole for a <a href='https://roberthart56.github.io/SCFAB/SC_lab/Tools/Drilling/motor_coupler.html'>motor coupler.</a><br> </p> <h3> Resources: </h3> <p> <a href="https://learn.sparkfun.com/tutorials/what-is-electricity">What is electricity?</a><br> <a href="https://learn.sparkfun.com/tutorials/what-is-a-circuit">What is a circuit?</a><br> <a href="https://learn.sparkfun.com/tutorials/electric-power">Electric power</a> </p>