spacelab-ufsc/ttc2

Telemetry, Tracking and Command Module 2.0

ttc2's Issues

Hardware: Change picoblades for 90° version

Firmware: Add a slave mode to the SPI driver

Hardware: Add an interrupt pin to the SPI interfaces of the PC-104

With an interrupt GPIO, the slaves can signalize the master when data is ready to read.

Firmware: Configure the GitHub Actions to enable CI/CD

The OBDH 2.0 repository can be used as reference.

Firmware: Import the FreeRTOS 10 from the OBDH 2.0 repository

Release v0.1.1

Hardware: Add an external watchdog

Hardware: Generate all outputs for fabrication

Before release:

• Review BOM
• Review Gerbers
• Create draftsman
• Check DNP
• Run DRC (check main rules before)

Documentation: Add a description of the firmware project

Documentation: Add the board assembly instructions

Hardware: Review schematics and report problems

Firmware: Import the useful source code from the OBDH 2.0 firmware

OBDH 2.0 repository: https://github.com/spacelab-ufsc/obdh2

Documentation: Add an introduction

Firmware: Develop a driver for the SX127x transceiver

Reference: https://www.semtech.com/products/wireless-rf/lora-core/sx1278
Driver reference: https://www.nicerf.com/products/detail/sx1278-wireless-module-lora1278f30.html

Hardware: Add a secondary communication bus between the microncontrollers

This might be useful for some time of handshake operations, synchronization or redundancy.

Hardware: Fix fabrication information on sheet layer for flight model

Details such as: surface treatment, pcb color and specified no silkcreen need to be updated. Adding IPC class 3 specification may be useful.

Hardware: Update logo in the PCB

Hardware: Add teardrops to tracks

Hardware: Fix PC104 partnumber parameter

Now is SSW-126-04-G-D but it must be TSW-126-07-G-D.

Documentation: Define a better nomenclature for the new mcu/radios architecture

Current names:

• MCU main
• MCU beacon
• Main radio
• Beacon radio

Hardware: Review the "Design rules" of the altium project for DRC inspection

Check if they have reasonable values and if are similar to the OBDH's rules.

Firmware: Add the G3RUH scrambler

Reference: https://www.amsat.org/amsat/articles/g3ruh/109.html

Hardware: Update BOM (fabrication and outputs), full pdf and pcb images in the readme

Firmware: Create the project in Code Composer Studio

Documentation: List the parameters and variables

Firmware: Develop a "power sensor" device

Hardware: Update and add draftsman pdf

Hardware: Review BOM and print the full schematic again (to include BOM in pdf)

Firmware: Import the useful unit tests from the OBDH 2.0 repo

Hardware: Remove debug headers 3D body

Firmware: Add an unit test for the power sensor device

Hardware: Remove the section "OBDH BYPASS CONTROL OVER RADIO 0" from the schematics

Import the workflow scripts from the OBDH 2.0 repository

Hardware: Update schematic and pcb libraries

Hardware: Add buffers to the I2C buses

As used in OBDH 2.0, TCA4311A is a good choice for I2C buses.

Hardware: Add a hard code PCB versioning with GPIO pins

Hardware: Add a second microcontroller to handle the second radio module

Hardware: Apply the SpaceLab standard to the schematics and the layout

Improve nomenclature and folder structure
Improve labels
Improve the debug pins
Improve the mechanical holes
Improve the layers organization
Improve the outputs and documentation
Add status leds
Fix footprints and components

Hardware: Replace component ID links from old libraries

Some componentes are directly linked to old EPS and Floripasat libraries, full replacement may be needed to update the components symbol and footprint characteristics.

Firmware: Add an unit test for the NGHam library

Hardware: Add testpoints to PCB

Documentation: Add a description of the hardware project

Hardware: Review and refactor tracks, vias, polygons and placement if necessary

Firmware: Add an unit test for the G3RUH scrambler

Hardware: Improve silkscreen labels

There are a lot of improvements for the labels:

• Placement
• Pinout
• Connectors purpose (e.g., ant interface)
• Testpoints
• GND quick access
• LEDs function

Firmware: Develop a driver of the INA226 sensor

https://www.ti.com/product/INA226

Hardware: List the updates and improvements

• Apply the SpaceLab standard to the schematics and the layout
  • Improve labels
  • Improve the debug pins
  • Add status leds
  • Add version resistors
  • Fix footprints and components
• Add the TX pin to the EPS communication bus
• Change the RF connectors by the through-hole version
• Add a second microcontroller to control the downlink/uplink radio module
• Change the MSP430 microcontroller by a version with FRAM memory
• Add buffer to the communication buses
• Add more optional signals to the PC-104 bus
• Add voltage/current sensors (uC and radio modules)
• Add a CAN bus
• Isolate the SPI bus of the radio modules

Hardware: Remove the reset switch

Remove the tactile switch presented in the first TTC version. As experienced during the TTC board usage, it is not necessary.

Hardware: Add voltage/current sensors

Add current and voltage sensors to the power bus of the microcontrollers, and also, if possible, to the radio modules power sources.

Hardware: Review the board design and altium project/setup/files

Tip: Follow Kleber's checklist