I'm using a 5v power supply (http://www.hobbyandyou.com/adraxx-33v-and-5v-power-supply-module-for-mb102-bread-board) to power an mbed externally. Negative is connected to Vin, and Positive to GND. I've written a simple program which lights up all 4 LEDs on the mbed board. When the 5v supply is turned on, the LEDs do light up, but to a lower brightness than when connected via USB, and a faint flicker.
Can anyone explain why this is? I measured the voltage coming out of the 5v supply, and the figure tends to move between 4.9-5.1, which I believe is within the mbed's range.
Can anyone explain why this is? I measured the voltage coming out of the 5v supply, and the figure tends to move between 4.9-5.1, which I believe is within the mbed's range.