# TSYS R&D Todo list

- [TSYS R\&D Todo list](#tsys-rd-todo-list)
  - [RF Chamber](#rf-chamber)
    - [Overview](#overview)
    - [Hardware](#hardware)
      - [Process](#process)
    - [Enclosure](#enclosure)
    - [to categorize](#to-categorize)
    - [Software](#software)
      - [SDR server](#sdr-server)
    - [EE](#ee)
  - [CNC/3d printing](#cnc3d-printing)
    - [CNC](#cnc)
    - [3d printer workflow/ops](#3d-printer-workflowops)
    - [OpenScan 3d scanner](#openscan-3d-scanner)
    - [Misc notes](#misc-notes)


Target completion: 05/30/2024

## RF Chamber

### Overview

- <https://www.sparkfun.com/tutorials/398>
- <https://www.tek.com/blog/pre-compliance-emc-test-equipment-guide-radiated-emissions>
- <https://www.digikey.com/en/articles/the-fcc-road-part-15-from-concept-to-approval>
- <https://hackaday.com/2016/09/19/preparing-your-product-for-the-fcc/>
- <https://www.nutsvolts.com/magazine/article/low-cost-emi-pre-compliance-testing>
- <https://medium.com/supplyframe-hardware/first-time-fcc-testing-for-a-custom-product-ef618da08bac>
- <https://emcfastpass.com/cert-ebook/>
- <https://connectivity-staging.s3.us-east-2.amazonaws.com/s3fs-public/2019-03/Pre-Scan-White-Paper-v1_0.pdf>
- <https://interferencetechnology.com/how-to-build-your-own-emi-troubleshooting-and-pre-compliance-kit/>
- <https://www.rtl-sdr.com/tag/vna/>

### Hardware

- <https://github.com/Ttl/vna>
- <https://tinkerman.cat/post/rf-power-monitoring-tools-on-the-cheap/>

#### Process

### Enclosure

- <http://eor.berkeley.edu/wp-content/uploads/2011/09/p004.rbradley.pdf>
- <https://www.microwavejournal.com/articles/25704-basic-rules-for-anechoic-chamber-design-part-one-rf-absorber-approximations>
- <http://eagle.chaosproject.com/sandbox/acstrial/newsletters/summer08/pp2.pdf>
- <https://www.mikrocontroller.net/attachment/89388/dip_icheln.pdf>
- <https://www.masttechnologies.com/products/defense/rf-absorbers/cavity-resonance-0-040/>
- <https://arxiv.org/pdf/1808.00820.pdf>
- <http://www.opensourceinstruments.com/Electronics/A3018/Faraday_Enclosures.html>
- <https://www.lessemf.com/fabric.html>

### to categorize

- <https://www.researchgate.net/profile/Moray-Rumney/publication/286591732_Practical_active_antenna_evaluation_using_the_two-stage_MIMO_OTA_measurement_method/links/56e6cd7408ae65dd4cc1d3ac/Practical-active-antenna-evaluation-using-the-two-stage-MIMO-OTA-measurement-method.pdf?origin=publication_detail>
- <https://www.stupid-projects.com/emc-probe-using-rtl-sdr/>
- <https://nanorfe.com/nanovna-v2.html>
- <https://www.rtl-sdr.com/tag/vna/>
- <https://www.rtl-sdr.com/vector-measurements-with-an-rtl-sdr-and-hackrf-based-system/>
- <https://www.analog.com/en/design-center/evaluation-hardware-and-software/evaluation-boards-kits/adalm-pluto.html#eb-overview>
- <https://hforsten.com/cheap-homemade-30-mhz-6-ghz-vector-network-analyzer.html>
- <https://www.jpier.org/PIER/pier138/31.13030606.pdf>

### Software

- <https://github.com/AD-Vega/rtl-power-fftw>
- <http://swigerco.com/gnuradio/>
- <https://www.techplayon.com/smart-antennas-beamforming-understanding-gnu-part-1/>
- <https://github.com/pavels/spektrum>
- <http://ab-initio.mit.edu/wiki/index.php?title=Meep>
- <https://github.com/AlexandreRouma/SDRPlusPlus/releases>

#### SDR server

Idea is to use the raspi4 on the lab bench, with the various SDR/pluto USB radios hung off it and stream the output to the (either/or) upstairs GPU farm or downstairs gpu/cpu server farm for processing.

- <https://e.pavlin.si/2021/12/11/multiband-sdr-with-remote-receivers/>
- <https://www.rtl-sdr.com/sdr-server-beta-now-available/>
- <https://www.rtl-sdr.com/tag/spyserver/>
- <https://www.rtl-sdr.com/tag/spyserver/page/2/>
- <https://www.rtl-sdr.com/rtl-sdr-tutorial-setting-up-and-using-the-spyserver-remote-streaming-server-with-an-rtl-sdr/>
- <https://github.com/pothosware/SoapyRemote>
- <https://github.com/pothosware/SoapySDR/wiki>

### EE

- Setup openocd server <https://forum.sparkfun.com/viewtopic.php?t=48276> and <http://openocd.org/doc/html/Server-Configuration.html>
- Setup sigrok with logging multimeter

<https://sigrok.org/>
<https://sigrok.org/wiki/UNI-T_UT61E>
<https://www.google.com/search?q=sigrok+uni-t&rlz=1C9BKJA_enUS945US945&oq=sigrok+uni-t&aqs=chrome..69i57.5133j0j4&hl=en-US&sourceid=chrome-mobile&ie=UTF-8>

- Setup bus pirate <http://dangerousprototypes.com/docs/Bus_Pirate#Download>
- Setup document camera <http://runeman.org/articles/natick-foss/ziggi-hd/>
- Setup USB microscope <https://www.adafruit.com/product/636> and <https://plugable.com/pages/microscope-drivers>
- Setup jtag <https://www.digikey.com/en/products/detail/ST-LINK%2fV2/497-10484-ND/2214535?itemSeq=371798146> and <https://github.com/stlink-org/stlink> and <http://openocd.org/doc/html/Debug-Adapter-Configuration.html> (google openocd st-link v2 ) (maybe add jtag as well)

## CNC/3d printing

We have a crealty ender (something) which has laser cuter, filament extruder, cnc. 

We also have monoprice 3d printers.

We also have an OpenScan 3d scanner.

### CNC

The following are some options to drive the controller

- <https://github.com/vlachoudis/bCNC>
- <https://github.com/synthetos/TinyG/wiki/Chilipeppr>
- <https://winder.github.io/ugs_website/guide/platform/>

Depending on maintenance , installation difficulty, features etc, may end up with multiple options.

### 3d printer workflow/ops

Evaluate

- <https://octoprint.org/download/>
- <https://github.com/MatterHackers/MatterControl>
- <https://www.repetier-server.com/>

Leaning towards MatterControl

MatterControl has an issue post install, bug report at <https://github.com/MatterHackers/MatterControl/issues/5096>

### OpenScan 3d scanner


### Misc notes

```
For the above items that present serial port over USB, we need to setup persistent device names.

Here is some text on how to do that from <http://wiki.mattercontrol.com/Development/Running_on_Linux>

"
Assigning Serial Ports

On Linux, serial port assignments can change whenever a printer is connected or disconnected. MatterControl cannot tell which printer is connected to which serial port. You can setup a udev rule to permanently assign a unique port to your printer.

Do ls /dev/tty* before and after connecting your printer to find out which port it is assigned to. Printers will show up as either /dev/ttyACM# or /dev/ttyUSB#.

Use udevadm to get the serial number (UUID) of the USB device. This is a unique 20 digit hexadecimal value.

$ udevadm info --attribute-walk -n /dev/ttyACM0 | grep "serial"

Some printers will not report a serial number. In this case, you will have to use other attributes to identify it such as the vendor ID (idVendor) and the product ID (idProduct).

Create a file /etc/udev/rules.d/97-3dprinters.rules. Here is an example with rules for two printers.

SUBSYSTEM=="tty", ATTRS{serial}=="6403237383335190E0F1", GROUP="uucp", MODE="0660", SYMLINK+="tty-taz"
SUBSYSTEM=="tty", ATTRS{idVendor}=="16d0", ATTRS{idProduct}=="076b", GROUP="uucp", MODE="0660", SYMLINK+="tty-kosselpro"

Fill in either the serial number or vender and product IDs based on the information you obtained earlier. Make sure GROUP is set to the same group ownership as the rest of your serial ports. This is usually dialout on Debian or uucp on Arch. You can check by doing ls -l /dev/ttyACM*. Lastly, give your printer a unique name for the SYMLINK. This name must start with tty or it will not show up in the list in MatterControl.

The next time you connect the printer, a symlink will automatically be created that points to the correct serial device. You can now edit the printer in MatterControl and choose the new device.
"

Here is an example rule from a production system at tsys:

root@pfv-vmsrv-04:/etc/udev/rules.d# cat 99-usb-serial.rules

# examples from

# <http://hintshop.ludvig.co.nz/show/persistent-names-usb-serial-devices/>
# <https://medium.com/@inegm/persistent-names-for-usb-serial-devices-in-linux-dev-ttyusbx-dev-custom-name-fd49b5db9af1>

# SUBSYSTEM=="tty", ATTRS{idVendor}=="1a86", ATTRS{idProduct}=="7523", SYMLINK+="rah-ctrl"

# SUBSYSTEM=="tty", ATTRS{idVendor}=="0403", ATTRS{idProduct}=="6001", ATTRS{serial}=="A6008isP", SYMLINK+="arduino"

# SUBSYSTEM=="tty", ATTRS{idVendor}=="0403", ATTRS{idProduct}=="6001", ATTRS{serial}=="A7004IXj", SYMLINK+="buspirate"

# SUBSYSTEM=="tty", ATTRS{idVendor}=="0403", ATTRS{idProduct}=="6001", ATTRS{serial}=="FTDIF46B", SYMLINK+="ttyUSB.ARM"

# Apply changes via

#

# udevadm control --reload-rules && sudo udevadm trigger

#

####################################

# USB serial for UPS

####################################

# Bus 002 Device 045: ID 067b:2303 Prolific Technology, Inc. PL2303 Serial Port

# root@pfv-vmsrv-03:~# udevadm info --name=/dev/ttyUSB2 --attribute-walk|grep -i vendor

# ATTRS{idVendor}=="067b"

# ATTRS{idVendor}=="2109"

# ATTRS{idVendor}=="8087"

# ATTRS{idVendor}=="1d6b"

# ATTRS{subsystem_vendor}=="0x1028"

# ATTRS{vendor}=="0x8086"

# root@pfv-vmsrv-03:/etc/snmp# udevadm info --name=/dev/ttyUSB2 --attribute-walk|grep -i serial

# SUBSYSTEMS=="usb-serial"

# ATTRS{product}=="USB-Serial Controller"

# ATTRS{serial}=="0000:00:1d.0"

# root@pfv-vmsrv-03:/etc/udev/rules.d#  udevadm info -a -n /dev/ttyUSB0 | grep '{serial}' | head -n1

# ATTRS{serial}=="0000:00:1d.0"

# SUBSYSTEM=="tty", ATTRS{idVendor}=="067b", ATTRS{idProduct}=="2303", ATTRS{serial}=="0000:00:1d.0", SYMLINK+="ups4"

SUBSYSTEM=="tty", ATTRS{idVendor}=="067b", ATTRS{idProduct}=="2303", SYMLINK+="ups4"
####################################

# USB serial for sifive

####################################
####################################

# USB serial for parallella

####################################

<https://research.kudelskisecurity.com/2014/05/01/jtag-debugging-made-easy-with-bus-pirate-and-openocd/>

and

<https://www.google.com/search?q=openocd%20bus%20pirate&ie=utf-8&oe=utf-8&client=firefox-b-1-m>

would be some things to check out.
```