Single-Layer PCB Design for PICO


Agent mode is needed to place and group the PCB components. Click the button to continue; because you have comment-only access, we’ll also need an editable fork or owner-granted edit permission.
Continue in Agent Mode
I’ll create an editable fork if required, inspect the board and component geometry, then place everything in functional groups and check for overlaps and out-of-bounds parts.
Forked a project
PiStrument - grouped placement
Raspberrypi Pico-based sampler, sequencer + drum machine w/ an embedded speaker, Adafruit I2S amplifier and momentary step switches, evoking the tr808 synthesizer ⁠
I created an editable fork and confirmed the board is 160 × 100 mm, two-layer, with 32 physical footprints. I’m now reorganizing it into mechanical controls, compute/display, audio, and power groups while preserving mounting-hole positions.
The fork is being placed now. The board is dense because the speaker and display consume most of the area, so the placement pass is iterating to clear mechanical overlaps without breaking the control and audio grouping.
Placed all 32 PCB footprints on an editable fork: PiStrument – grouped placement. Controls, resistors, display/compute, audio, power, and mechanical parts are grouped; placement has zero body overlaps, keepout violations, or out-of-bounds parts.
Open items
  • Existing traces were not rerouted after placement, leaving 59 airwires plus legacy dangling/floating copper.
  • Routing congestion remains near SIPO1/PICO and the resistor row.
  • Execution stopped because no ACUs remain.
Suggested next steps
  1. Spread the congested SIPO1/PICO area.
  2. Remove obsolete routing and reroute the board.
  3. Run final DRC and routing checks.
Improve congested placement
Inspect placement constraints
Prepare routing cleanup

B0
B5
B8
MicroAmp
B3
B2
B4
DAC AMP
Display
Speaker
B1
B7
B6
This power supply line comes from the display internal regulator

Someone is typing...
14
The display has its own regulator + level shifter. For this reason we give it 5V...

Someone is typing...
13
deleted comment, thread stayed

Someone is typing...
17
please explain what ENCODER does.

Someone is typing...
23
create a high level mermaid block diagram of this project. Include key component...

Someone is typing...
29
list all B0 pins in a table format. For each pin provide its pin number, pin nam...

Someone is typing...
31
Here we are using the USB 5V as power supply but 3.3V logic from the pico. Every...

Someone is typing...
12
what is controller ?

Someone is typing...
22
Testing

Someone is typing...
18
@docbrown, tell me more about this project?

Someone is typing...
19
What this circuits does ?

Someone is typing...
26
list all ICs and the decoupling capacitors attached to each. Ensure to include a...

Someone is typing...
27
explain this project.

Someone is typing...
24
list all ICs and the decoupling capacitors attached to each. Ensure to include a...

Someone is typing...
30
How this circuits works ?

Someone is typing...
25
explain this project.

Someone is typing...
21
please explain what B6 does.

Someone is typing...
28
PICO
R8
Resistance
1kΩ
R1
Resistance
1kΩ
R2
Resistance
1kΩ
R3
Resistance
1kΩ
R7
Resistance
1kΩ
R5
Resistance
1kΩ
R6
Resistance
1kΩ
R9
Resistance
1kΩ
R4
Resistance
1kΩ
ENCODER
RESET
SIPO1
PWR 5v

PiStrument