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zephray / XserveFanSpeedController

A hardware module that controls the fan speed of Xserve 3,1
MIT License
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Pin assigment #1

Open AidenShaw2020 opened 1 year ago

AidenShaw2020 commented 1 year ago

Hi @zephray , i have issues with your pinout for fan array on https://www.zephray.me/post/xserve_fan_mod. You posting this pin assigment:

  1. SCL-B
  2. SCL-A
  3. SDA-B
  4. SDA-A
  5. GND
  6. VDD (5V)

, but when i check it on fan board using multimeter, ground its on pin 6. obrazek

Also, there is no 5V on whole connector (only 3.3 and 12). When i tried connect gnd to Xserve case, and powering longan nano using usb, server lets starts, but after some seconds its fans spinning to maximal RPMs.

Can you help me please? Thanks.

AidenShaw2020 commented 1 year ago

Also, i send it my wiring on Longan Nano, for checking. (Yelow is SCL, Green is SDA) obrazek image0(2) image2(2)

AidenShaw2020 commented 1 year ago

Correct connections are:

  1. SCL-B
  2. SCL-A
  3. SDA-B
  4. SDA-A
  5. -
  6. GND
  7. VDD (3,3)

I also check wiring by i2c scanner, and its to be seems OK: PB11, PB10 I2C device found at address 0x0C ! I2C device found at address 0x41 ! I2C device found at address 0x51 ! I2C device found at address 0x52 ! I2C device found at address 0x53 ! I2C device found at address 0x61 ! I2C device found at address 0x65 !

PB7, PB6 I2C device found at address 0x0C ! I2C device found at address 0x50 ! I2C device found at address 0x51 ! I2C device found at address 0x52 ! I2C device found at address 0x53 ! I2C device found at address 0x61 ! I2C device found at address 0x65 !

PB15, PB14 I2C device found at address 0x41 ! I2C device found at address 0x50 ! I2C device found at address 0x51 ! I2C device found at address 0x52 ! I2C device found at address 0x53 !

PB13, PB12 I2C device found at address 0x0C ! I2C device found at address 0x29 ! I2C device found at address 0x2C ! I2C device found at address 0x2D ! I2C device found at address 0x41 ! I2C device found at address 0x50 ! I2C device found at address 0x51 ! I2C device found at address 0x52 ! I2C device found at address 0x53 !

, but i still have same issues (after some seconds fans spins to maximal speed).

Maybe its not important, but i have Sipeed Longan Nano, without display attached. Thanks for any help.