Hi all, I have been working on designing a PCB board for IoT usage and I am in a stage where all the peripherals and sensors work, except the micro-SD card reader. The board has the following sensors and modules connected in the respective pinout: 1. ATGM336H-5N31 - SD2, SD3 2. Ra-02 LoRa - SPI(IO5,...

Sorry for the late response. I just saw the notification. [Wow, I really missed the VLOGIC part, I referenced a Sparkfun board which seems the same as Adafruit's. So the VLOGIC should be connected to 3.3V right? Yes, assuming that's the logic level of your I2C (I assume it is). According to the MPU...

Not much to go on here. Is your VLOGIC connected to anything but the capacitor and ground? That is the digital logic reference voltage used by the MPU 6050 for I2C. If you referenced the Sparkfun MPU 6050 schematic, you'll note that VLOGIC goes to the VIO connector on their little board and it need...

Hi all, although I have used the forum for a long time now to read topics, this is my first post! I have designed a PCB that uses the ESP32-PICO-D4 and I attached a LoRa RA02 and an MPU6050 to it. Although the MCU works flawlessly and I am able to program it and use the RA02, I have a weird issue tr...