Two Jrk G2 21v3 on I2C network

Support Motor controllers/drivers and motors
1

Hi there!
I need to use two 21v3 boards on the same I2C network to drive some Light-Duty Linear Actuators with Feedback.
The 6.3 chapter ( Setting up I²C control) of “User’s Guide” tell us “You should use the Jrk G2 Configuration Utility to configure each Jrk to have a different “Device number”, which specifies the 7-bit I²C address to use.”
But I don’t have, in my version of configuration utility (pololu-jrk-g2-1.4.0-win.msi) this option!
My boards has 1.01 firmware version.
I’m on win 10 pro.

How do I set different I2C address to at least one of them?

Thanks.

2

Hello.

The Device number field is under the Input tab below the Enable CRC checkbox in the Serial interface box of the Pololu Jrk G2 Configuration Utility.

pololu_jrk_g2_configuration_utility_device_number_field
pololu_jrk_g2_configuration_utility_device_number_field311×555 44.9 KB

- Amanda

3

Hi Amanda,
Many thanks, I just realise I need bigger glasses.

In the meantime, I solved by writing the desired address directly in the configuration file “serial_device_number:”, a file I uploaded and wrote to the device.

1 Like