1. Mini Sumo Electronics Tutorial F09

2. outLINE Board Overview Components and Soldering Testing and Debugging General Advice

3. boardOVERVIEW Custom 2 layer design, updated this Summer Cost per board is about $60-80 w/components depending on manufacturer Based around Microchip’s PIC18F4580 microcontroller

4. blockDIAGRAM Status LEDs Microcontroller (PIC18F4580-I/P) Microcontroller (PIC18F4580-I/P) Programming Interface (ICSP) Serial I/O (MAX232N) Motor Control (2x MC33886) Motor Control (2x MC33886) I 2 C Bus Sensor I/O

5. boardCOMPONENTS Schottky Diode (Polar) MAX232N MC33886 PIC18F4580 LED (Polar) Resistor Capacitor Electrolytic Capacitor (Polar) LM1084 Voltage Regulator Male Header Friction Lock Header Negative Match to stripe on board Pin 1 Marker 100 + 2 zeros = 10k Pin 1 Marker

6. solderingBASICS Soldering: Use of a hot iron to melt a tin alloy in order to electrically connect components to a circuit board Image courtesy of SparkFun Electronics

7. solderingTIPS Iron temp is usually set to ~70-75 Make sure you wipe the iron tip on the wet sponge every time you solder something Components should be flush to the board Demos will be done in the lab. Ask us for help if you need it. Hint: You will.

8. moreHELP You CAN destroy components and/or parts of the board You ARE easily burned. Be careful. Highly recommended set of tutorials + videos: http://www.sparkfun.com/commerce/tutorial_info.php?tutorials_id=96

9. testandDEBUG The schematic and layout are on our website. This presentation will be on our website. You should check our website. Something will break/be broken Hardware debugging can be very frustrating.

10. thereFORE Test all power inputs before placing chips into sockets/soldering the MC33886s Flux remover is your best friend. Flux is a flowing liquid residue from soldering. It’s conductive. Enough said. Pay close attention to component polarity where applicable. This is how chips explode.

11. extraPICS A few of you will blow up your microcontrollers. Free samples are available from Microchip. You may be interested. YOU have to order them. (We used ours) Instructions on our website under articles: http://uwrobotics.uwaterloo.ca/articles/11 http://uwrobotics.uwaterloo.ca/articles/11 Do this immediately. Shipping takes time.

12. generalADVICE Divide up tasks. Work concurrently. You don’t need the lab to program or sketch drawings. It’s on YOU to ensure work gets done. Remember to allocate time for testing. Very few things in engineering work the first time. Especially robots.

13. questions? Post Production Mods Image courtesy of SparkFun Electronics Typical. Welcome to Electronics.

14. buildTIME Starts now. SOME of you should come with me to the soldering session. You also have software to write and a chassis to design and build You should remember to buy batteries. 4 AAs preferably. You may want spares.