2 layers398.2 × 398.2 mm LargeWordClock LargeKickstarter, the printed circuit board in 3D

LargeWordClock LargeKickstarter

resolution = [0.5, 0.5] pcbfolder = '../PCBs/' pcbnames = ["1Bitsy1bitsy"] iters = 30 env = PCBRoutingEnv(resolution=resolution, pcbfolder=pcbfolder, pcbnames=pcbnames) obs, info = env.reset() for in range(iters): act =…

Open in PCBKit

Size: 398.2 × 398.2 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 1,591
Nets: 152
Pads: 2,496
Tracks, vias: 7,882, 607
Routed: Yes
KiCad: KiCad 5 (file 20171130)
Created: 28 Mar 2023
Updated: 18 Jan 2024

Overview

LargeWordClock LargeKickstarter is an open-source printed circuit board by PCBench, from the PCBench/PCBench repository on GitHub, published under the MIT licence. It is a 2-layer board of 398.2 × 398.2 mm with 1,591 parts on 152 nets, routed with 7,882 tracks and 607 vias.

It is built around the HT16K33 and DS3231S#. Its parts include 20 resistors, 12 ICs, 8 capacitors, 6 diodes and 5 connectors. It belongs with the AVR (ATmega, ATtiny) boards of this library.

Main components

README

README.md

PCBench: A Dataset for Printed Circuit Board Routing

PCBench is a dataset for PCB routing task, it includes a dataset consisting of 164 printed circuit boards (PCB), a data augmentation script to expand the dataset for supervised learning (SL) tasks, and a reinforcement learning (RL) environment.

Dataset

Folder Structure

All the PCB designs in our dataset are stored in the folder PCBs, where each PCB design is stored in a subfolder named {author/org}_{PCB_name}_{design_version(optional)}. Below is the folder structure of the dataset.

text

├── PCBs
│   ├── master_metadata.json
│   ├── subfolder1
│   │   ├── raw.kicad_pcb
│   │   ├── processed.kicad_pcb
│   │   ├── final.json
│   │   ├── metadata.json
│   │   ├── visual.png
│   ├── subfolder2
│   │   ├── raw.kicad_pcb
│   │   ├── processed.kicad_pcb
│   │   ├── final.json
│   │   ├── metadata.json
│   │   ├── visual.png
│   ├── ...

The raw.kicad_pcb is the raw PCB design file, process.kicad_pcb is the file after cleaning up, final.json stores only routing-related information used for ML tasks. metadata.json stores the meta information for each single PCB design. visual.png is a visualization of each single PCB design. master_meta.json contains metadata of all PCBs and global-level information.

PCB Routing Description Language (PCB-RDL)

We propose a JSON specification (final.json for each PCB design) called the PCB Routing Description Language (PCB-RDL) that expresses a PCB routing problem and its solutions intuitively using basic concepts in order to facilitate research into automated PCB routing using ML. Following figure shows is an example of PCB with marked components in PCB-RDL (Left) and it corrsponding PCB-RDL (Right).

PCB example

Data Augmentation

Run

The augmentation data can be generated with the script Scripts/Data_augmentation/augmentation.py. To generate 3 samples by randomly extracting 50% nets from the PCB 1Bitsy_1bitsy, please run the following command

text

cd Scripts/Data_augmentation/
python augmentation.py --num_samples 3 --net_ratio 0.5 --pcb_name 1Bitsy_1bitsy

Output

All the generated PCBs will be stored in the folder named augmented_data under Scripts/Data_augmentation/. In augmented_data, all the generated samples will be stored in a subfolder with the name of selected PCB. Each generated sample has the name sample_index.json. For example, the above command will generate the following file under Scripts/Data_augmentation/

text

├── augmented_data
│   ├── 1Bitsy_1bitsy
│   │   ├── 1.json
│   │   ├── 2.json
│   │   ├── 3.json

RL environment

Installation

The RL environment requires Python >= 3.7. You can simply install the environment with the following commands:

text

git clone https://github.com/PCBench/PCBench.git
cd PCBench
python setup.py install

After installation, open a Python console and type

text

from RLEnv.EnvLayer.PCBRoutingEnv import PCBRoutingEnv

If no error occurs, you have successfully installed the PCB routing environment.

API Usage

The following content shows an example of API usage of PCBRoutingEnv.

text

from RLEnv.EnvLayer.PCBRoutingEnv import PCBRoutingEnv
import random

resolution = [0.5, 0.5]
pcb_folder = '../PCBs/'
pcb_names = ["1Bitsy_1bitsy"]
iters = 30
env = PCBRoutingEnv(resolution=resolution, pcb_folder=pcb_folder, pcb_names=pcb_names)
obs, info = env.reset()
for _ in range(iters):
    act = random.randint(0,5)
    obs, rew, terminal, _, info = env.step(act)
    if terminal:
        env.reset()

You can find more examples of customizing functions of reward and state observation from RLEnv/examples.ipynb.

Parts

1,591

Qty	Value	Footprint	References
512	LED	LikeClockwork:SMD_LED_PLCC_2	0-0, 0-1, 0-2, 0-10, 0-11, 0-12, 0-13, 0-14, 0-15, 0-16, 0-17, 0-18, 0-19, 0-20, 0-21, 0-22 +496
12	47K	LikeClockwork:R_0603_HandSoldering_noss	R3, R6, R8, R9, R10, R11, R12, R13, R14, R15, R16, R17
12	JUMPER	LikeClockwork:solder_jumper_noss	JP1, JP2, JP3, JP4, JP5, JP6, JP7, JP8, JP9, JP10, JP11, JP12
9	MountingHole_2-5mm	LikeClockwork:MountingHole_2-5mm	H1, H4, H5, H6, H7, H9, H10, M2, M3
6	0.1uF	LikeClockwork:C_0603_HandSoldering_noss	C1, C4, C5, C6, C7, C8
5	10K	LikeClockwork:R_0603_HandSoldering_noss	R1, R2, R4, R5, R7
4	DIODE	LikeClockwork:SOD-323noss	D2, D3, D4, D5
4	HT16K33	LikeClockwork:SO28W_noss	U1, U4, U10, U12
4	HT16K33_BOUT	LikeClockwork:HT16K33_Breakout	U5, U6, U9, U11
3	10K	Resistors_ThroughHole:Resistor_Horizontal_RM10mm	R18, R19, R20
1	10uF	LikeClockwork:nosilk_Elko_vert_11.2x7.5mm_RM2.5_CopperClear	C2
1	1uF	LikeClockwork:nosilk_Elko_vert_11.2x7.5mm_RM2.5_CopperClear	C3
1	ATMEGA328-TQFP	adafruit:TQFP32-08	U3
1	Arduino_Nano	LikeClockwork:Arduino_Nano	U7
1	BATTERY	SparkFun-Electromechanical:BATTCOM_20MM_PTH	BT1
1	CONN_01X02	Pin_Headers:Pin_Header_Straight_1x02	P2
1	CONN_01X03	LikeClockwork:osilk_Diode_TO-220_Dual_CommonCathode_Horizontal_LargePads	P1
1	CONN_01X05	LikeClockwork:Pin_Header_Straight_1x05noss	P3
1	CONN_01X06	LikeClockwork:Pin_Header_Straight_1x06noss	P5
1	CONN_02X03	LikeClockwork:Pin_Header_Straight_2x03noss	P4
1	DIODE	Diodes_ThroughHole:Diode_DO-41_SOD81_Horizontal_RM10	D6
1	DIODE	Diodes_SMD:Diode-SMA_Handsoldering	D1
1	DS3231	LikeClockwork:SOIC-16_7.5x10.3mm_Pitch1.27mmnoss	U2
1	HOUR	SparkFun-Electromechanical:TACTILE-PTH-SIDEEZ	SW1
1	LOGO	LikeClockwork:lc_logo_top	G***_2
1	LOGO	LikeClockwork:power_section	G***_4
1	LOGO	LikeClockwork:button_section	G***_3
1	LOGO	LikeClockwork:top_matrix	G***_6
1	LOGO	LikeClockwork:bottom_matrix	G***_5
1	LOGO	LikeClockwork:shield_area_2	G***_8
1	LOGO	LikeClockwork:lc_logo_2	G***
1	LOGO	LikeClockwork:nano_section	G***_7
1	LOGO	LikeClockwork:proto_area	G***_9
1	MIN	SparkFun-Electromechanical:TACTILE-PTH-SIDEEZ	SW2
1	SOFT	SparkFun-Electromechanical:TACTILE-PTH-SIDEEZ	SW4
1	UNO_FOOTPRINT	LikeClockwork:shield_footprint	U8

The 597 most common of 1,591 parts.

Questions

How big is the LargeWordClock LargeKickstarter PCB?

It measures 398.2 × 398.2 mm and has 2 copper layers, 1.6 mm thick.

What parts does the LargeWordClock LargeKickstarter use?

1,591 parts, built around the HT16K33 and DS3231S#. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the LargeWordClock LargeKickstarter KiCad files?

From the PCBench/PCBench repository on GitHub, at the commit this page was made from: the board is PCBs/LargeWordClock_LargeKickstarter/processed.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the LargeWordClock LargeKickstarter design in my own project?

Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).

Category and platform

AVR (ATmega, ATtiny)

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/pcbench-pcbench-processed-14" title="LargeWordClock LargeKickstarter in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>

A picture

<img src="https://pcbkit.io/embed/boards/pcbench-pcbench-processed-14.jpg" alt="LargeWordClock LargeKickstarter" width="1200" height="900">

A picture that opens the board, for a README

[![LargeWordClock LargeKickstarter](https://pcbkit.io/embed/boards/pcbench-pcbench-processed-14.jpg?size=s)](https://pcbkit.io/boards/pcbench-pcbench-processed-14)

Source

Repository: PCBench/PCBench
Board file: PCBs/LargeWordClock_LargeKickstarter/processed.kicad_pcb
Commit: dec3be7
Licence: MIT
Copies: 2 copies in 3 repositories

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