1. E

    Retaining a PWM signal setup in bootloader

    Hello and thanks for taking the time to read this thread, I have a proprietary bootloader (for which I have the sources) that I have slightly modified to generate a PWM signal. This has to be done as early as possible; using a script launched via "etc/init.d/rcS" is not acceptable...
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    SparkFun ZOE-M8Q GPS Chip with RPI 4

    Hi so I am trying to connect a SparkFun ZOE-M8Q GPS Chip to an RPI 4. I purchased the SparkFun Pi QWIIC hat and used it to connect to the GPS chip. On boot the chip's led turns red showing it is being properly powered. I followed the SparkFun guide for setting up the QWIIC hat. However, for...