NetBurner Community Forum

I'm using a NetBurner MOD5270, and tries to communicate over i2c to a LED driver PCA9625. When I load the program from NB's IDE the program runs smoothly. I can also connect another i2c IO-circuit and it works fine.

When I switch off and on the power supply the LED driver seems to be unaccessable. I get timeouts from the NB module when trying to communicate with the led driver. The NB module can boot properly if the i2c io circuit is the only one connected...

Any hints?

Can you provide more info on the power supply? Is there any other power supplies in the circuit? Does the NetBurner run correctly besides I2C... serial, Ethernet? Can the NetBurner still communicate with the RTC on the dev-board after the power cycle?

A construction error on the circuit board to stabilize the voltage. When removing a large capacitor the timeout errors disappeared. Probably the capacitor was not entirely loaded and jammed the I2C bus signal.

Thanks anyway!