EllieClifford: /* CUSF PCB Checklist */ formatting

2021-04-24T15:59:36Z

CUSF PCB Checklist: formatting

← Older revision		Revision as of 15:59, 24 April 2021
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	~~= CUSF PCB Checklist =~~

	This PCB design checklist contains things you should check before you send a PCB off to manufacture. It includes generally good ideas and some lessons learned the hard way! Feel free to update as experience is gained.		This PCB design checklist contains things you should check before you send a PCB off to manufacture. It includes generally good ideas and some lessons learned the hard way! Feel free to update as experience is gained.

	# Schematic Checks		# Schematic Checks
			## Check component values (including tolerances and power ratings)
	~~<pre> -~~ Check component values (including tolerances and power ratings)		## Check component pinouts (check against the footprint too!)
	- Check component pinouts (check against the footprint too!)		## Check over any complicated or novel sections of the schematic, especially e.g. high power and RF
	- Check over any complicated or novel sections of the schematic, especially e.g. high power and RF		## Check pin allocations on a microcontroller are compatible with required peripherals
	- Check pin allocations on a microcontroller are compatible with required peripherals		## Check any serial lines have RX/TX swapped where required
	- Check any serial lines have RX/TX swapped where required		## ESD diodes on all world-facing connectors
	- ESD diodes on all world-facing connectors		## Check all parts have order codes for the correct item
	- Check all parts have order codes for the correct item		## Check app notes and datasheets for novel parts for hints on decoupling, layout, app circuits, etc
	- Check app notes and datasheets for novel parts for hints on decoupling, layout, app circuits, etc		## LED indicators (status, power, etc)
	- LED indicators (status, power, etc)		## Use reasonably large LED resistors - don't need to blind anyone with indicators
	- Use reasonably large LED resistors - don't need to blind anyone with indicators		## Don't mix up global and local/hierarchical net labels
	- Don't mix up global and local/hierarchical net labels		## Check label directions are appropriate (inputs/outputs/bidi/etc)
	- Check label directions are appropriate (inputs/outputs/bidi/etc)		## Run ERC: no errors or warnings
	- Run ERC: no errors or warnings		# PCB Checks
	- PCB Checks		## Decoupling capacitors all close to IC power pins, with smallest values closest to the pins
	- Decoupling capacitors all close to IC power pins, with smallest values closest to the pins		## Power nets as simple and tree-like as possible. Avoid loops
	- Power nets as simple and tree-like as possible. Avoid loops		## Ground pours should have a bit more clearance than the minimum
	- Ground pours should have a bit more clearance than the minimum		## Stitch ground planes together well if using more than one
	- Stitch ground planes together well if using more than one		## Crystal traces as short and symmetrical as possible
	- Crystal traces as short and symmetrical as possible		## ESD diodes as close to connector pins as possible
	- ESD diodes as close to connector pins as possible		## Check component footprints against datasheet for new footprints
	- Check component footprints against datasheet for new footprints		## Double check pinouts on the PCB against the datasheet
	- Double check pinouts on the PCB against the datasheet		## Ensure sufficient mounting holes are present, with enough clearance for bolt heads
	- Ensure sufficient mounting holes are present, with enough clearance for bolt heads		## If the PCB has to fit in a specific geometry, check board dimensions and connector placements
	- If the PCB has to fit in a specific geometry, check board dimensions and connector placements		## Silkscreen:
	- Silkscreen:		### Date, revision, name
	- Date, revision, name		### Pin 1 indicators
	- Pin 1 indicators		### Power and other connector pin labels
	- Power and other connector pin labels		### Clearly mark polarity and functionality for connectors
	- Clearly mark polarity and functionality for connectors		### LED labels
	- LED labels		### Orientation labels
	- Orientation labels		## Check datasheets for specific PCB layout advice
	- Check datasheets for specific PCB layout advice		### No copper underneath magnetometers
	- No copper underneath magnetometers		### GPS receiver ground planes on both layers
	- GPS receiver ground planes on both layers		## Add test points to nets of interest
	- Add test points to nets of interest		## Print out a 1:1 copy and inspect visually for anything that stands out
	- Print out a 1:1 copy and inspect visually for anything that stands out		## Check over mask and stencil settings: avoid too much mask or paste
	- Check over mask and stencil settings: avoid too much mask or paste		## Check positions where they're important, e.g. board mounted connectors, outline shape, location of mounting holes
	- Check positions where they're important, e.g. board mounted connectors, outline shape, location of mounting holes		## Round off PCB corners
	- Round off PCB corners		## Check power traces are as thick as practical and ground planes as complete as possible
	- Check power traces are as thick as practical and ground planes as complete as possible		## Run DRC: no errors or warnings
	- Run DRC: no errors or warnings
	~~</pre>~~

EllieClifford: "Add old wiki"

2021-04-19T18:57:58Z

"Add old wiki"

New page

= CUSF PCB Checklist =

This PCB design checklist contains things you should check before you send a PCB off to manufacture. It includes generally good ideas and some lessons learned the hard way! Feel free to update as experience is gained.

# Schematic Checks

<pre> - Check component values (including tolerances and power ratings)
- Check component pinouts (check against the footprint too!)
- Check over any complicated or novel sections of the schematic, especially e.g. high power and RF
- Check pin allocations on a microcontroller are compatible with required peripherals
- Check any serial lines have RX/TX swapped where required
- ESD diodes on all world-facing connectors
- Check all parts have order codes for the correct item
- Check app notes and datasheets for novel parts for hints on decoupling, layout, app circuits, etc
- LED indicators (status, power, etc)
- Use reasonably large LED resistors - don't need to blind anyone with indicators
- Don't mix up global and local/hierarchical net labels
- Check label directions are appropriate (inputs/outputs/bidi/etc)
- Run ERC: no errors or warnings
- PCB Checks
- Decoupling capacitors all close to IC power pins, with smallest values closest to the pins
- Power nets as simple and tree-like as possible. Avoid loops
- Ground pours should have a bit more clearance than the minimum
- Stitch ground planes together well if using more than one
- Crystal traces as short and symmetrical as possible
- ESD diodes as close to connector pins as possible
- Check component footprints against datasheet for new footprints
- Double check pinouts on the PCB against the datasheet
- Ensure sufficient mounting holes are present, with enough clearance for bolt heads
- If the PCB has to fit in a specific geometry, check board dimensions and connector placements
- Silkscreen:
- Date, revision, name
- Pin 1 indicators
- Power and other connector pin labels
- Clearly mark polarity and functionality for connectors
- LED labels
- Orientation labels
- Check datasheets for specific PCB layout advice
- No copper underneath magnetometers
- GPS receiver ground planes on both layers
- Add test points to nets of interest
- Print out a 1:1 copy and inspect visually for anything that stands out
- Check over mask and stencil settings: avoid too much mask or paste
- Check positions where they're important, e.g. board mounted connectors, outline shape, location of mounting holes
- Round off PCB corners
- Check power traces are as thick as practical and ground planes as complete as possible
- Run DRC: no errors or warnings
</pre>

Pcb checklist - Revision history

EllieClifford: /* CUSF PCB Checklist */ formatting

EllieClifford: "Add old wiki"