HiRel/CanSat/Slave Gumstix
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|+ Gumstix Breakout IOs | |+ Gumstix Breakout IOs | ||
! Name !! Direction !! Level [V] !! Description | ! Name !! Direction !! Level [V] !! Description | ||
− | |||
− | |||
|- | |- | ||
− | | | + | | N_RESET || in || || Gumstix reset, connect to GND through button |
|- | |- | ||
− | | | + | | TXD1 || out || 3.3 || rowspan="2" | Serial port |
|- | |- | ||
− | | | + | | RXD1 || in || 3.3 |
|- | |- | ||
− | | | + | | SPI1 CLK || out || 3.3 || rowspan="5" | SPI port |
|- | |- | ||
− | | | + | | SPI1 MOSI || out || 3.3 |
|- | |- | ||
− | | | + | | SPI1 MISO || in || 3.3 |
|- | |- | ||
− | | | + | | SPI1 CS0 || out || 3.3 |
+ | |- | ||
+ | | SPI1 CS1 || out || 3.3 | ||
|- | |- | ||
| GND || || || Common | | GND || || || Common | ||
|- | |- | ||
| VCC33 || in || 3.3 || Power Supply | | VCC33 || in || 3.3 || Power Supply | ||
+ | |- | ||
+ | | USB5 || out || 5 || Power delivered by the USB connector<BR /> not used on the breakout board<BR /> provided through a jumper | ||
|} | |} | ||
Revision as of 12:50, 2 May 2017
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The CanSat processor platform provides easy access to data processing and storage. It holds a Gumstix Overo® Computer-on-Module (COM) board.
Type | CanSat Slave Gumstix | Schematic | Description |
---|---|---|---|
V1.0 | CanSat Slave Gumstix v2.0 Schematic PDF |
Power
Supply
The COM board can be powered with 5 V:
- via the micro-USB connector
- via the CanSat power supply board
When using the micro-USB connector power supply:
- the jumper close to the the COM board should be shorted
- the jumper on the power supply board should be open on both sides (5 V from batteries or from mini-USB)
Consumption
The Gumstix needs an input voltage of 3.3 – 4.2 V DC. Apart from that, little information is given by the manufacturer. Therefore we did some crude tests on our own, with the CanSat Slave Gumstix board directly connected to a laboratory power supply. The test design (developed for the Kart) serves a webpage over WiFi.
The whole setup works fine for voltages higher than 3.2V and it consumes up to 500 mA.
Connectors
A breakout board with the following pins on a standard connector has been created:
Name | Direction | Level [V] | Description |
---|---|---|---|
N_RESET | in | Gumstix reset, connect to GND through button | |
TXD1 | out | 3.3 | Serial port |
RXD1 | in | 3.3 | |
SPI1 CLK | out | 3.3 | SPI port |
SPI1 MOSI | out | 3.3 | |
SPI1 MISO | in | 3.3 | |
SPI1 CS0 | out | 3.3 | |
SPI1 CS1 | out | 3.3 | |
GND | Common | ||
VCC33 | in | 3.3 | Power Supply |
USB5 | out | 5 | Power delivered by the USB connector not used on the breakout board provided through a jumper |
The USB5 power is connected to the top connector's 5 V pin. On the power board, the 3.3 V is generated for all boards. This is the source of the VCC33 pin which powers the COM board.