Project Plan, Task Checklist, Estimates Project Prototyping Objectives Introduction of Project Checklist Estimate Spreadsheet Compile Project Plan, Estimates, Gantt Chart Introduction to Prototyping Techniques Determination of Best Prototype Strategy Introduction to Circuit Board Layout - Exercise 3 Major Deliverables Team & Individual: Overall Project Plan (due for P2) Team: Prototype Plan Individual: Schematic and Layout Exercise: Thermal Sensor Circuit
Project Plan, Task Checklist, Estimates Project Prototyping Deliverables - Individual and Team For Each Block Owner: Completed Excel template for Block Level Tasks For Each Block Owner: Create Block Line Info for Team Level Prototyping Summary Plan For Each Team: Completed Excel task template for Project Level Tasks with Block level tasks integrated for project totals For Each Team: Summarize your overall plan on 1-2 Powerpoint Slides incl Gantt chart
Project Plan Summary Templates Suggested Overall Project Plan Summary Slide Contents 1st Slide: Estimation-Reconciliation Summary Total Manpower Estimated vs Available (from lab 1) Total Material $ Estimated vs Available (from lab 1) ~ % of total manpower for system design tasks, detailed design tasks, verification tasks, and documentation tasks Suggested down/up scope if needed 2nd Slide: Project Plan Graphical Summary Create single page high level GANTT chart for entire project Show chronological interdependencies (example: can’t prototype until parts are procured, can’t procure parts until part list is compiled, etc)
Excel Task Estimation Tool Project Level Task Estimation Sheet Manhours Totalize at bottom of Sheet Material $ Totalize at bottom of Sheet Data Is Entered into Beige Shaded Blocks Only ! Start/End Date should be realistic and be dependent on other tasks Use Week.Day Numbering (ie. Class Week #, Monday=1, Sunday=7) Example: 4.4 = 4th class week, Thursday Customize for your own use by Number of Design Blocks Cut/Paste the Detailed Design Section for Each Block Owner Use as Project Plan for Tracking Team Members to Weekly Deliverables
Excel Task Estimation Tool Project Level Task Estimation System Design Tasks Detailed Design Blocks from Next Sheets Material $ and Manpower Hrs Totalize in the Green
Excel Task Estimation Tool Project Task Estimation Tool Verification & Integration Tasks Presentation, Report and Validation Manhours Totalize at bottom of Page Material $ Totalize at bottom of Page
Excel Task Estimation Tool Block Level Task Estimation Sheet Manhours Totalize at bottom of Sheet Material $ Totalize at bottom of Sheet System Design (Block Definition) Tasks Detailed Design Tasks Customize for your own use by Number of Design Blocks Cut/Paste the Detailed Design Section for Each Block Owner
Example of Simple Gantt Chart showing high level plan
Project Plan, Task Checklist, Estimates Project Prototyping Deliverables - Team Complete 7 step prototyping plan from lecture slides Summarize your prototyping plan in the single power point table slide (see template)
Block Prototyping Plan Template Name Block Area (cm2) Located on Board # (1, 2, .. etc) Board Substrate Type Comp Attachment Board Dimensions (cm x cm) Types of Connectors
Basic Electronic Assembly and Test Deliverables – Individual: Develop the schematic and layout files for the Example Thermal Sensor Circuit to exactly match the layout shown. The PCB design should encompass the following requirements Dimensions of 1.5” x 2.2” 2 Layers (double sided) Through Hole + 1 SMT Part Placements as Shown for all parts 25 mil power & ground traces, 10 mil signal traces 56 mil power & ground input pads with silkscreen Labels 56 mil output signal pads ExpressPCB is suggested due to simplicity and tutorials
Basic Electronic Assembly and Test Deliverables – Individual: Compute the board cost. Capture Itemized Popups Keep Dimensions of 1.5” x 2.2” Layout Compute Board Cost (Use Lowest Cost Option) Capture Itemized Cost Popup in a Powerpoint Slide Revise your Board Dimensions to 3.8” x 2.5”, Recost using special Capture Itemized Cost Popup
Example: Temp Sensor Circuit 3 ICs: LM35 SO8, OP07 Dip 8 6 Capacitors: Ceramic Monolithic Axial 3 Resistors: 0.125W Axial 10 Total Nodes
Bill of Materials Example for Thermal Sensor Circuit Device Number Mfg Part Number Description Qty Package U1 LM35DCN Precision Temp Sensor 1 SO8 U2,3 OP07CP Low Noise Bipolar OpAmp 2 DIP8 R1,2,3 10K, 1%, 1/4W Metal Film Res 3 Axial2 C1-5 0.1uF, 50V, 20%, Ceramic Mono Capacitor 5
Trace the Schematic to Cover All Net Connections Net Interconnections +5V U1-P8 C3-P1 Vt U1-P1 R1-P1 Vp2 U2-P3 R1-P2 Vb U2-P2 U2-P6 R3-P1 +12V U2-P7 U3-P7 C1-P1 C4-P1 -12V U2-P4 U3-P4 C2-P1 C5-P1 Vn3 U3-P2 R3-P2 C6-P1 Vp3 U3-P3 R2-P2 Vout U3-P6 C6-P2 Gnd U1-P1 C1-P2 C2-P2 C3-P2 C4-P2 C5-P5 R2-P1 Netlist for Thermal Sensor Circuit Trace the Schematic to Cover All Net Connections
Basic Component Placement And Silkscreen
Top Side: Layer 1 Routing
Bottom Side: Layer 2 Routing
Top & Bottom Side Routing
ExpressPCB Freeware eCAD Software Available at www.expresspcb.com Version 5.4.0 or Later (Current 6.1.1) If Needed, Download & Install Software from above link (first check to see if SW is already on PC) Read Through Help Section – Quickstart Tutorial for ExpressSCH Quickstart Tutorial for ExpressPCB NOTE: To Copy from ExpressPCB and ExpressSCH, use the Print Scrn key from the keyboard, then when in Powerpoint or Word, use cntrl-V to paste the screen view.