2 layers

Module led hall

Hydrographic surveying platform operating system

Copper layers: 2
Thickness: 1.6 mm
Parts: 10
Nets: 10
Pads: 27
Tracks, vias: 59, 4
Routed: Yes
KiCad: KiCad 8.0 (file 20240108)
Created: 23 Aug 2019
Updated: 22 May 2026

Overview

Module led hall is an open-source printed circuit board by CIDCO-dev, from the CIDCO-dev/Poseidon repository on GitHub, published under the MIT licence. It is a 2-layer board with 10 parts on 10 nets, routed with 59 tracks and 4 vias.

It is built around the A3213LLHLT-T. Its parts include 3 resistors, 2 capacitors, 2 connectors and 1 IC.

Main components

A3213LLHLT-T
SOT-23W-40℃~+85℃ 2.4V~5.5V 309uA SOT-23W Hall Switches ROHSAllegro MicroSystems, LLCLinear Hall Sensors

README

README.md

Poseidon

Hydrographic surveying platform operating system (ROS Noetic).

Getting started (RPi4, Ubuntu 20.04, ROS Noetic)

Clone under /opt: sudo chown $USER:$USER /opt && cd /opt && git clone --recursive <repo>
Install: run install/rpi4-noetic.sh (RPi4 target).
Build: cd /opt/Poseidon/src/workspace && catkin_make -j1 -DCATKIN_BLACKLIST_PACKAGES="mavros;inertial_sense;velodyne;ins_piksi;velodyne_pointcloud;velodyne_driver;velodyne_laserscan;gnss_mosaic_x5;tf"
Source: source /opt/ros/noetic/setup.bash then source /opt/Poseidon/src/workspace/devel/setup.bash.
Launch simulator: roslaunch launch/Simulator/dummy_simulator_virtual-machine.launch, then open the web UI at http://localhost.

Docs

Full documentation lives in doc/ (Markdown):

doc/README.md: overview, build, run, tests
doc/install.md: installation with dependencies (RPi4, Ubuntu 20.04, ROS Noetic)
doc/nodes.md: list of ROS nodes
doc/web.md: list of web UI pages
doc/web/*.md: per-page details (index, status, diagnostics, data, map, settings, calibration, goal)
doc/nodes/*.md: per-node details with inputs/outputs/params

Tests

C++/Python/ROS: catkin_make run_tests -j1 -DCATKIN_BLACKLIST_PACKAGES="ins_piksi;libmavconn;echoboat_odometry;mavros_msgs;mavros;mavros_extras;test_mavros;gnss_mosaic_x5;imu_bno055;sonar_imagenex852;inertial_sense;raspberrypi_vitals;imu_null;sonar_dummy;gnss_dummy;lidar_filtering"
JS: cd www/webroot/js && npm test --coverage

Tools

Rosbag replay: roslaunch launch/Echoboat/rosbag_replay.launch bag_filename:=rosbag.bag
Lidar georef: ./devel/lib/logger/lidarGeoreferencer -h (supports filtering options)
Logging modes: 1=Always ON, 2=Manual, 3=Speed based

Parts

Qty	Value	Footprint	References
2	80R	Resistor_SMD:R_1206_3216Metric	R3, R4
2	MountingHole	MountingHole:MountingHole_4.3mm_M4	H1, H3
1	0.1uf	Capacitor_SMD:C_1206_3216Metric	C2
1	10pf	Capacitor_SMD:C_1206_3216Metric	C1
1	150R	Resistor_SMD:R_1206_3216Metric	R2
1	A3213LLHLT-T	Package_TO_SOT_SMD:SOT-23W	U2
1	Conn_01x04_MountingPin	Connector_FFC-FPC:TE_84952-4_1x04-1MP_P1.0mm_Horizontal	J2
1	Conn_02x03_Top_Bottom	Connector_IDC:IDC-Header_2x03_P2.54mm_Vertical	J1

Questions

What parts does the Module led hall use?

10 parts, built around the A3213LLHLT-T. 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 Module led hall KiCad files?

From the CIDCO-dev/Poseidon repository on GitHub, at the commit this page was made from: the board is docs/PCB Design/HB-HL/module led hall.kicad_pcb and its schematic docs/PCB Design/HB-BP/PwrBypass.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Module led hall 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).

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/cidco-dev-poseidon-module-led-hall" title="Module led hall 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/cidco-dev-poseidon-module-led-hall.jpg" alt="Module led hall" width="1200" height="900">

A picture that opens the board, for a README

[![Module led hall](https://pcbkit.io/embed/boards/cidco-dev-poseidon-module-led-hall.jpg?size=s)](https://pcbkit.io/boards/cidco-dev-poseidon-module-led-hall)

Source

Repository: CIDCO-dev/Poseidon
Board file: docs/PCB Design/HB-HL/module led hall.kicad_pcb
Commit: 8b498a2
Licence: MIT

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