Cause: v3.0 uses CAN-FD by default on some pins.
Fix:
can disable
can set_mode classical
can set_baudrate 250000
can enable
Source the firmware only from:
The file should be named something like: h3q44_v3.0_firmware.bin or upgrade_h3q44_v3.0.img. h3q44 v3.0 firmware
v3.0 introduces a low-power passive state. The H3Q44 unit can now enter a dormant state drawing only 0.5W, waking instantly (sub-millisecond) upon detection of specific acoustic or thermal signatures. Cause : v3