Tzatziffy II – SD only (for PocketCHIP)
Hey Chipsters, this is the TZATZIFFY, SD card only.
It will add a micro SD Card slot on the back, connected to CHIP via SDIO interface (faster compared to SPI).
95% solder free installation
Simply stack the DIP between CHIP and pocketCHIP. Just push the DIP on the pins of pocketCHIP, the SD card jack should face down (towards battery) and in CHIPs direction (so you can see it without CHIP being installed). The DIP is designed to connect to the pins of pocketCHIP by bending them a tiny bit. I’ve tinkered a long time (12 prototypes) to get a reliable connection without too much bending. The 95% refers to the chance that it will work for YOU. I’ve tested this design on both of my pocketCHIP and many others, who ordered this DIP before reported that it worked flawlessly. But it is still possible that your pocketCHIP has a bit more spacing between the headers or smaller pins (due to production variation) so there is the chance that you don’t have good contact and need to solder the board to get good connection.
Base software installation:
First step for all versions is to clone my github respository to get all required files:
sudo apt update && sudo apt install git -y && cd /opt/ && sudo git clone https://github.com/KoljaWindeler/CHIP_TZATZIFFY.git
The new 3D OS4.4
To start the SD card once on 3d OS4.4 simply run:
you can also let it auto-load on every start by running my installer once:
The old OS4.4
OS4.4 does not support loading of device tree overlays on runtime. I’ve compiled a kernel that supports it.
The command below will install my custom kernel.
cd /tmp && wget https://owncloud.illuminum.de/index.php/s/5GjdNY2BWzEdDOw/download && cd / && sudo tar xzvf /tmp/download && sudo reboot now
To start the SD card on this OS4.4 simply run:
For PocketCHIP 4.3
Please install a custom device tree file, that will tell the kernel that a card is always present. Please run
sudo cp /boot/sun5i-r8-chip.dtb /boot/sun5i-r8-chip.dtb.bak && sudo cp /opt/CHIP_TZATZIFFY/overlay/pchip/sun5i-r8-chip.dtb /boot/sun5i-r8-chip.dtb
This is another extension that started in the Forum and was only possible with the support of the glorious CHIP community! For completeness: The PCB is the same as the fully blown Tzatziffy, only with a drastic reduce set of components.