H2 Sensor Board - UAlberta-EcoCar/wiki GitHub Wiki
Link to H2 Sensor Board Eagle files.
Image here of board with callouts to all the connectors.
| Ethernet 1: Legacy Connector | |||||
|---|---|---|---|---|---|
| Maintains backwards compatibility with the 2016/2017 system | |||||
| 1 | H2_OK | 3V Signal | |||
| 2 | NC | ||||
| 3 | NC | ||||
| 4 | NC | ||||
| 5 | GND | ||||
| 6 | AUX12V | ||||
| 7 | NC | ||||
| 8 | AUX5V | ||||
| Ethernet 2: To New Controller | |||||
|---|---|---|---|---|---|
| For Future 2017/2018 System Revision (Not implemented in current version of board) | |||||
| 1 | STOP | 3V Signal | |||
| 2 | H2_OK | 3V Signal | |||
| 3 | ESTOP1 | 3V Signal | |||
| 4 | ESTOP2 | 3V Signal | |||
| 5 | GND | ||||
| 6 | GND | ||||
| 7 | GND | ||||
| 8 | GND | ||||
As per competition rules, the sensor is powered by the auxillary battery via the Aux Power Connector.
| 6P6C 1 Aux Power | |||||
|---|---|---|---|---|---|
| 1 | GND | ||||
| 2 | AUX12V | ||||
| 3 | AUX5V | ||||
| 4 | AUX5V | ||||
| 5 | AUX12V | ||||
| 6 | GND | ||||
Board uses a MQ-8 Hydrogen Gas sensor. It can detect hydrogen gas from 100-10000 ppm. Sparkfun has a link to the datasheet and a wiring example.
Rules for Shell EcoMarathon require that the sensor triggers shutdown at 1 % (10000 ppm). This sensor has suffient sensitivity
Fall 2017: Started documentation for new board