Do I need to split my GND lines?
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I am intending to make a multiplexed LED matrix, possibly with 16 rows, 8 columns. This means maximum 16 LEDs (one full row) will be lit at the same time, thus 16 LEDs * 20 mA/LED = 320 mA. According to the STM32F103 datasheet I have max 150 mA per GND, see excerpt below: I use the development board (see pic below) which has 3 GND pins. I assume I should split my LED 'returns' to 3 different GNDs to have a maximum of 150 mA/GND pin?
ground stm32f10x led-matrix
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edited yesterday
Michel Keijzers
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