https://github.com/zenitheesc/probe-cdh

Command data handling for space probes using Caurin
https://github.com/zenitheesc/probe-cdh

caurin probe

Last synced: 3 months ago
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Command data handling for space probes using Caurin

Host: GitHub
URL: https://github.com/zenitheesc/probe-cdh
Owner: zenitheesc
Created: 2021-04-17T21:37:36.000Z (almost 5 years ago)
Default Branch: main
Last Pushed: 2023-02-08T18:22:25.000Z (almost 3 years ago)
Last Synced: 2025-06-16T11:07:45.704Z (8 months ago)
Topics: caurin, probe
Language: HTML
Homepage:
Size: 13.1 MB
Stars: 2
Watchers: 0
Forks: 0
Open Issues: 2
Metadata Files:
- Readme: README.md

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README

# Probe-CDH

Probe-CDH

Telecommunication board for the Zenith's Stack architecture.

Environment and Tools •
Z-Hub •
Block Diagram •
Schematic •
Board

## Environment and tools

This board was designed using KiCad 5.1.10.

## Block Diagram

## Z-Hub

This board contains a Stack Connector, with the 2021 Z-Hub pinout.

Z-Hub 2021

GND
GND

GND
GND

BAT+
BAT+

SOl+
SOl-

5V
5V

3V3
3V3

MISO1
MOSI1

SCK1
CAN_H

SDA
CAN_L

SCL
CE02

CE11
CE12

SDA1
SCL1

SDA2
SCL2

TX1
RX1

TX2
RX2

DIG1
DIG6

ALRT1
/CHRG

PWM
DIG8

/FAULT
DIG9

DIG5
DIG10

## Schematic

The design was separated in hierarchical sheets to accommodate all components in an orderly way.

The first page contains the STM32L476 with all its accompanying circuits; crystals, debugging LED, Boot solder jumper, decoupling capacitors and reset buttons. On the same page you find the stack connector along with a programming and debugging connector and an external GPS connector (can also be used for UART communication with external devices, it’s bad but it’s there).

The second page contains the two LoRa and (G)FSK radios, one capable of 2 W off transmission power when fed with 6 V (obtained with the linear regulator), and the other capable of 160 mW, used as a backup or low power option. Both of them are based on the Semtech SX1262 transceiver, for operation at 915 MHz. The u-blox NEO-M8N also lives on this page, with its backup super capacitor for hot starts.

The last page houses the remaining peripherals which include the SD Card, the 128 Mb Flash, the CAN Transceiver and the buzzer connector with its mosfet, which may also be used as an external actuator with a max current of 1 A (the mosfet actually handles up to 1,5 A but let’s not push it too far).