Steven's tester for Opulo. This has been mentioned on various livestreams etc and the intention seems to be for it to be released as open source, but so far I can't find it anywhere. It's referenced in Opulo docs such as here:
Looks like a purely commercial offering and I can't find source anywhere. Seems to support a large collection of hardware devices.
A massive list of projects. No point reproducing it here!
- [OK] TUSB2046 USB hub
- [OK] DUT power control: VIN, 5V, 3V3
- [OK] INA260 current sensors (Using library)
- [OK] Piezo beeper
- [OK] TCA9548 I2C multiplexer
- [OK] AD5593R I/O expander
- CAT24C32 EEPROM (Test Module, on I2C bus 1)
- CAT24C32 EEPROM (HAT, on I2C bus 0)
Logitech Brio MX 4K webcam
sudo apt install fswebcam
To check available resolutions:
v4l2-ctl --list-formats-ext
Must be plugged into USB3 port and detected as a USB3 device to provide 4K res.
fswebcam -r 3840x2160 -p MJPEG --skip 10 test9.jpg
It's only being detected as USB2.0:
lsusb -t
shows 480M (USB2.0) instead of 5000M (USB3.0) even plugged in directly.
According to Gemini, Pi 3B+ only has a shared internal USB2.0 bus, even though it exposes USB3 ports externally! This sucks
Got it working an a Pi 5B with a Comsol USB-A to C cable CMAM12BK
Options like this work, although gain doesn't seem to do anything:
fswebcam -r 3840x2160 -p MJPEG --set brightness=100% --set contrast=60% --set sharpness=80% --set gain=255 --skip 20 test17.jpg
Script to take a series of pics:
#!/bin/bash
mkdir -p webcam_images cd webcam_images
for i in {1..5}; do echo "Capturing image $i..." # -r specifies resolution, --no-banner removes the timestamp # -S 10 skips the first 10 frames to allow calibration fswebcam -r 3840x2160 -p MJPEG --no-banner --set brightness=80% --set contrast=60% --set sharpness=60% --skip 20 image_$i.jpeg sleep 1 done
echo "Capture complete."
Install ImageMagick:
sudo apt install imagemagick
Process pics:
magick convert *.jpeg -evaluate-sequence median stacked_image.jpeg
Alternative to using external process and passing it a text file:
https://github.com/python-escpos/python-escpos
https://github.com/DevelopiumTech/VEML3328
https://www.digikey.com.au/en/products/detail/vishay-semiconductor-opto-division/VEML3328SL/10673128
https://www.finntestelectronics.com/product/mega-module/
Use Given - When - Then format? Or AAA?
Use raw Python, or some kind of config? Config is hard! For eg:
Simple string, then output of all "then" lines?
object: title: 5V power rail abort_on_fail: true fail_message: 5V power rail out of spec given: - 5v: true - boolean: true when: - 5v: true - delay: 100ms then: - analogread a5: 4.7 - 5.1
object: title: 3V3 power rail abort_on_fail: true fail_message: 3V3 power rail out of spec given: - 5v: true - boolean: true when: - 5v: true - delay: 100ms then: - analogread a6: 2.9 - 3.4
Needs Blinka installed:
sudo apt-get update
sudo apt-get -y upgrade
sudo apt-get install -y python3-pip
pip install rpi-lgpio
https://learn.adafruit.com/adafruit-tca9548a-1-to-8-i2c-multiplexer-breakout/circuitpython-python
sudo pip3 install adafruit-circuitpython-tca9548a
https://github.com/101Robotics/AD5593-MicroPython
https://learn.adafruit.com/adafruit-ad5693r-16-bit-dac-breakout-board/circuitpython-and-python
python -m venv venv
source venv/bin/activate
pip install adafruit-circuitpython-ad569x
pip install lgpio
To allow Node-RED to shut down the Pi:
https://flows.nodered.org/node/node-red-contrib-rpi-shutdown
https://pypi.org/project/ina260/
pip install ina260
from ina260.controller import Controller
c = Controller(address=0x40)
print(c.voltage())
print(c.current())
print(c.power()))
Use Adafruit Blinka for CP style access to MCP23017 from within Python:
Created a test script called mcp-test.py
Pullup example:
pin1.direction = digitalio.Direction.INPUT
pin1.pull = digitalio.Pull.UP
pinctrl 17 op dh // Turn on VIN
pinctrl 27 op dh // Turn on 5V
pinctrl 22 op dh // Turn on 3.3V
pinctrl 23 op dh // Turn on piezo
pinctrl 23 op dl // Turn off piezo
Export spreadsheet from gdocs as XLSX, and scp it to the portal VM.
cd /var/www/register-test/pyproj
. env/bin/activate
./manage.py import-xlsx ~/Device-Serial-Numbers-.xlsx
Brother label printer on Linux: https://github.com/HenrikBengtsson/brother-ptouch-label-printer-on-linux
For CAN: MCP251863 controller/ transceiver (See CANPico board)
https://github.com/kentindell/canhack/tree/master/CANPico
https://core-electronics.com.au/adafruit-picowbell-can-bus-for-pico-mcp2515-can-controller.html
https://github.com/LukePrior/Raspberry-Pi-Thermal-Printer
Firmata for Raspberry Pi Pico:
- Use ConfigurableFirmata with zero changes
- Board profile is "Arduino Mbed OS RP2040 Boards" -> "Raspberry Pi Pico"
- Upload methd: UF2
Impressive 3D printed test jig run by a Raspberry Pi:
https://www.youtube.com/watch?v=iTLnJ0uIZIg
Firmata equivalent for RPi Pic:
https://github.com/MrYsLab/telemetrix-rpi-pico
Equivalent to Firmata:
https://abyz.me.uk/picod/py_picod.html
Config files using configparser:
https://stackoverflow.com/questions/19078170/python-how-would-you-save-a-simple-settings-config-file
https://www.geeksforgeeks.org/how-to-create-gui-applications-under-linux-desktop-using-pygobject/
Thermal camera for Raspberry Pi:
https://www.flir.com.au/developer/lepton-integration/lepton-integration-raspberry-pi/
Capturing from Raspberry Pi cam:
raspistill -st -t 200 -o image.jpg
Install Raspberry Pi OS 64-bit. Edit the settings:
- Set hostname to tester(x).local
- Set username to testomatic
- Set password to something secret
- Set WiFi credentials
- Set WiFi country
- Set locale
- Enable SSH
Put SD card in Pi and boot it.
SSH to the pi:
ssh testomatic@tester.local
Update system and install Vim:
sudo apt update
sudo apt dist-upgrade
sudo apt install vim
Install node-red
Go to http://tester3.local:1880/
Install the palette item "node-red-contrib-ip" Install the palette item "@flowfuse/node-red-dashboard"
sudo apt install pipx
pipx install esptool
Kiosk tutorial: https://www.raspberrypi.com/tutorials/how-to-use-a-raspberry-pi-in-kiosk-mode/
sudo apt install wtype
sudo apt install chromium-browser
sudo vim .config/wayfire.ini
Add this new section:
[autostart] chromium = chromium-browser http://localhost:1880/dashboard/page1 --kiosk --noerrdialogs --disable-infobars --no-first-run --ozone-platform=wayland --enable-features=OverlayScrollbar --start-maximized
sudo apt install chromium-browser
Add to /etc/xdg/lxsession/LXDE-pi/autostart:
@xset s off @xset -dpms @xset s noblank @chromium-browser --noerrdialogs --disable-infobars --kiosk https://localhost:1880/dashboard/page1
edit /boot/firmware/config.txt and find this line:
dtoverlay = vc4-kms-v3d
Replace it with:
dtoverlay = vc4-fkms-v3d
sudo vim /boot/firmware/config.txt
Add these lines to the end:
hdmi_force_hotplug=1
max_usb_current=1
hdmi_group=2
hdmi_mode=1
hdmi_mode=87
hdmi_cvt 1024 600 60 6 0 0 0
hdmi_drive=1
Elecrow 7" touchscreen setup: https://www.elecrow.com/rc070p-7-inch-1024x600-raspberry-pi-monitor-touchscreen-capacitive-ips-display-with-built-in-speaker-stand.html
copy printer-driver-pos_3.13.11_all.deb to machine
sudo dpkg -i printer-driver-pos_3.13.11_all.deb
Open printer preferences and enable network administration.
Use a browser to connect to https://tester.local:631
Add local printer.
Select the POS-80.
On the printer type page, select Make -> POS Select Model -> POS-80 (en)
Copy over test software directory.
pip3 install pytz
pip3 install esptool