PCB Design for Cat Deterrent

flux

I’m blocked again because there are no available ACUs, so I can’t continue routing or run more checks.
What I completed this session:
  • Reduced airwires from 33 to 20 at the last check.
  • Routed more VBUS_5V, 3V3_LOGIC, PUMP_GATE, PIR_OUT, LED_STAT, and MOSI-related connections.
  • Removed DRC-reported overlapping copper fragments so the board is not left with known shorting trace pieces.
What remains:
  • Finish blocked dense nets: RESET, PB1/MISO, PB2/SCK, LED anode, some 3.3 V/passive branches, and ground.
  • Re-run DRC/airwire checks.
  • Likely adjust placement slightly around the ISP/ATtiny/passive cluster if those routes remain blocked.
chrisbrooks1982

chrisbrooks1982

Finish up quickly fast as you can no delay

flux

I’m blocked: there are no available ACUs, so I can’t execute more routing or cleanup right now.
What I completed:
  • Rechecked the current layout/routing state.
  • Tried direct routing on the tight ATtiny85 ↔ ISP area.
  • Re-ran placement optimization to open routing space around J4/ISP, U1, reset parts, and nearby passives.
  • Final check after that showed the board is still not complete: 28 airwires, 12 dangling trace warnings, and 8 overlapping-copper errors remain.
What remains:
  • Delete or repair the overlapping copper first.
  • Finish routing the dense ISP/reset/pot/keep-alive nets.
  • Finish ground and remaining 3.3 V / 5 V branches.
  • Run final airwire/DRC checks before manufacturing export.
The layout is not ready for fabrication yet; once ACUs are available, the fastest path is copper cleanup first, then finish the remaining routes.
Locate copper errors
List remaining airwires
Fast routing order
Check placement nudges
Sign up to send
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Cat Deterrent Sprayer 2306

Cat Deterrent Sprayer 2306 thumbnail
Motion-activated cat deterrent sprayer controller: Ø34 mm round PCB using an ATtiny85, 3.3 V PIR/logic rail, 5 V USB power-bank pump rail, MOSFET pump drive, optional keep-alive load, and compact top-side SMT layout.

Properties

Properties describe core aspects of the project.

Pricing & Availability

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Arrow

$2.94–$4.74

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$0.02–$0.07

HQonline

$2.90–$3.14

LCSC

$3.81–$5.06

Mouser

$4.95–$5.19

TME

$4.00–$4.12

Verical

$2.69–$17.62

Controls