Selected platform: RoboCORE v1.0.0
RoboCORE can drive RC servos via additional servo driver. It is powered from RoboCORE and has internal DC/DC converter, which can deliver up to 3A average current for servos.
The picture below describes the pinout of the Servo driver.
You don't need to understand these signals, just connect the servo driver to the hExt port using two flat cables and servos to the pins on the right side.
| Parameter | Description |
|---|---|
| Name | Servo driver for RoboCORE |
| Version | 1.0 |
| Number of outputs | 12 |
| Power input supply voltage range | 6V - 16V |
| Output voltage for servos | selectable from 5V, 6V or 7.2V |
| Max. average output current | 3A |
| Max. peak output current | 5A |
| Communication interface | USART |
| Overcurrent protection | yes |
| Overtemperature protection | will come with the next firmware version |
| Firmware upgrade possibility | yes |
Up to 4 servo drivers can be connected to one hExt port. The IDC flat cable allows to crimp additional connectors anywhere along the cable. In this way, the parallel hExt bus can be created, but the software has to differentiate each individual servo driver.
To achieve that, you have to choose the different address for each driver using jumper. The picture with pinout describes how to set the specific addresses from 0 to 3. Address 0 is set by removing the jumper (or leaving it with one side unconnected, like it is shown on the picture).
The green LED function is predefined in the firmware. In the current firmware, the green LED statuses are following:
| LED Behaviour | Status |
|---|---|
| OFF | not powered |
| rarely flashes | powered, but not working |
| flashes | no high-power supply (+Vin unconnected) |
| ON | working |
Servo driver contains the DC/DC converter which lowers the +Vin voltage to the 5V, 6V or 7.2V. These voltages are selectable in software. See details in our API reference manual
