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Member #56771

Member Since: December 31, 2008

Country: United States

  • I ordered this version of the CM4 module, but received the 4GB RAM version with the 32GB emmc instead. I was very disappointed as the module versions with the emmc are hard to program. If you are expecting the lite version and receive the emmc versions here is how to program them. Unfortunately Windows 10 will not install the necessary drivers (https://www.raspberrypi.org/documentation/hardware/computemodule/cm-emmc-flashing.md) for the emmc module even with the "trusted source" turned off. So you will have to use either a Rpi or a Nano to program the emmc with the boot loader using "rpiboot" which is what I did. However the Ubuntu 18.04 on my Nano would not mount the emmc even though it appeared as drive "sda". So back to Windows 10. This time when I ran "rpiboot" on my Windows 10 PC it communicated with the emmc, but would not open it. However unplugging and re-plugging the USB cable into the PC brought the emmc up as a new drive (E). I was then able to use BalenaEtcher to install an image of Buster Desktop on the emmc. After completing the OS image install, don't forget to open the config.txt file and add the following so you can use the USB ports and the WiFi: "dtoverlay=dwc2,dr_mode=host" to enable the USB ports and "dtparam=ant1" if you want to use the internal antenna or "dtparam=ant2" if you are using an external antenna like I am. After you remove the emmc disable jumper on J2, connect up a monitor, keyboard and mouse to the CM4 IO board, the CM4 module should boot up like a Rpi 4B and let you configure the Buster Desktop.

  • I entered my CDC Traxxas Slash rover in the Peloton Class because it did not fit anywhere else. However, next year I would like to run a vehicle in the Micro Class which requires a vehicle to be 10 inches in length or shorter. Since many quality 1/16 R/C cars are around 12 inches in length, could Sparkfun consider increasing the length dimension of the Micro Class to 12 inches? A 1/16 scale rally R/C car is a lot easier to fit in a Pelican case than my 1/10 scale Slash rover. I drove from Ft. Lauderdale, FL to Boulder, CO to compete this year and would like to be able to fly next year.:-) Regards, TCIII CDC

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