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https://github.com/hstarmans/hexastorm
Amaranth HDL framework for laser scanner with motion control
https://github.com/hstarmans/hexastorm
amaranth-hdl cnc-machine fpga laser laser-scanner micropython raspberry
Last synced: 1 day ago
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Amaranth HDL framework for laser scanner with motion control
- Host: GitHub
- URL: https://github.com/hstarmans/hexastorm
- Owner: hstarmans
- License: other
- Created: 2019-12-19T18:06:34.000Z (about 5 years ago)
- Default Branch: master
- Last Pushed: 2024-11-03T13:26:53.000Z (about 2 months ago)
- Last Synced: 2024-11-03T13:30:10.349Z (about 2 months ago)
- Topics: amaranth-hdl, cnc-machine, fpga, laser, laser-scanner, micropython, raspberry
- Language: Python
- Homepage:
- Size: 4.18 MB
- Stars: 25
- Watchers: 6
- Forks: 3
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# Laser scanner [](https://hexastorm.readthedocs.io/en/latest/?badge=latest)
[Laser scanning](https://en.wikipedia.org/wiki/Laser_scanning) is the controlled deflection of laser beams, visible or invisible.
In a high-speed polygon scanner system, the laser is deflected by a rotating prism or mirror.
The position of the laser is determined via a photodiode.
Hexastorm is a full toolkit for working with polygon lasers scanners using FPGA technology; and provides hardware, gateware, and software
to enable laser scanning applications.
Code is tested on the system shown above, branded as [Hexastorm](https://www.hexastorm.com).
The FreeCAD design is shared [here](https://github.com/hstarmans/hexastorm_design)
and PCB designs are found [here](https://github.com/hstarmans/firestarter).
A blog can be found on [Hackaday](https://hackaday.io/project/21933-open-hardware-fast-high-resolution-laser).
The code took most inspiration from [LDGraphy](https://github.com/hzeller/ldgraphy).
Making a PCB with scanner is shown in the video;
[](http://www.youtube.com/watch?v=dR09Tev0cPk "Making PCB with Laser Direct Imaging").
The alignment procedure is shown in the following video.
[](http://www.youtube.com/watch?v=Ri6DAneEzw4 "Alignment procedure")
## Requirements
Code is tested on a Raspberry Pi 3B and 4B. The SD-card should be at least 8 GB, ideally 16 GB.
Both 32 bit and 64 bit are tested, with camera.
# Overall note
Development is done on the main or master branch.
Look through to commit history to find the right working version which was used in the video.
# Install
Install poetry and python.
```console
sudo apt install python3 python3-pip
curl -sSL https://install.python-poetry.org | python3 -
```
Use poetry to install the dependencies in pyproject.toml.
The virtual environment needs to be installed in project for VSCode to detect it.
```console
poetry config virtualenvs.in-project true
poetry install --without raspberry,64bit
```
Poetry creates a virtual environment for you.
```poetry run python``` gives you access to the packages installed.
Depending on your operating system you also need to install certain extras.
Look into the pyproject.toml file for the possibilities.
Yosys must be compiled or installed via [oss-cad-suite](https://github.com/YosysHQ/oss-cad-suite-build).
An alternative is to install python packages which use wasm but these are experimental.
```console
poetry install --without raspberry
```
If this doesn't work try
You can test code as follows.
```console
poetry run python3 -m hexastorm.movement
```
If you want to interact with the stepper motors and flash the fpga.
```console
./install.sh
```
## Micropython
An idea, I am working on is to call controller.py from Micropython.
Most dependencies can be moved to ESP32.
## Raspberry pi
The following lines need to be in the /boot/config.txt;
```
# I2C for laserdriver and camera
dtparam=i2c_arm=on
dtparam=i2c_vc=on
# SPI
dtoverlay=spi0-1cs,cs0_pin=18
dtoverlay=spi1-1cs,cs0_pin=7
# camera
dtoverlay=vc4-fkms-v3d
start_x=1
gpu_mem=300
```
There should not be dtparam=spi=on, somewhere. This would enable two chip selects for SPI0 and
creates a conflict with the pin select of SPI1.
## Arducam
Install my version of the Python libary available at [ArducamPython](https://github.com/hstarmans/Arducampython).