IONI hardware revisions

PCB version print on the corner. This is from PCB026.

List IONI drive hardware revisions and changes.

Release date	Models	PCB version	Component configuration	Changes & Impact	How to identify
5.2015	IONI, IONI Pro, IONI Pro HC	V26	Initial version	Initial release	Component RN5 has value 221 On corner of PCB behind LEDs is small print reading PCB026
1.2017	IONI, IONI Pro	V26	V6	Changed voltage sense resistor value to have equal value with other models No practical effect for end user Changed GPI1,2,3 series resistors from 220 ohm to 68 ohm Improve clock signal strength with BiSS and SSI encoders	Component RN5 has value 680 On corner of PCB behind LEDs is small print reading PCB026
1.2017	IONI Pro HC	V26	V6	Changed GPI1,2,3 series resistors from 220 ohm to 68 ohm Improve clock signal strength with BiSS and SSI encoders	Component RN5 has value 680 On corner of PCB behind LEDs is small print reading PCB026
1.2017	IONI, IONI Pro, IONI Pro HC	V29	V6	New PCB revision with reduced encoder to current sense crosstalk In high inductance motors may reduced motor audible noise. Crosstalk is reduced by approximately 10 dB. Added 3300 ohm 5V pull-up resistor to GPI5 input Originally GPI5 was pulled up by >30kOhm resistor to 3.3V	On corner of PCB behind LEDs is small print reading V029R0

Planned revisions

Release date	Models	PCB version	Component configuration	Changes & Impact	How to identify
TBD	N/A	N/A	N/A	No foreseeable change plans at the moment

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