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+# Creating additional buzztime product variants
+
+The buzztime device tree extends the rockchip tree.  The actual starting point is in the rockchip/device/rk312x to avoid problems with lower level makefiles that may be expecting the 'official' device folder to be the rk312x folder.
+
+The PRODUCT name can change but the model (BZT-T102) is on the FCC regulatory screen and should remain unchanged.
+
+| bzt | 1 | 8 | uxa | 02 |
+|---|---|---|---|---|
+| company code | 1Gb RAM | 8Gb Flash | $`\frac{USB}{Audio}`$ | Prod ID |
+
+* identify the product code for the new device (eg bzt18uxa0N) 
+
+* create the device folder:  
+run ` ./device/common/populate-new-device.sh buzztime bzt18uxa0N`  
+This creates a device/buzztime/product folder with default minimum contents.
+
+* in device/rockchip/rk312x folder :  
+copy bzt18uxa02.mk to bzt18uxa0N.mk  
+change all references to bzt18uxa02 to bzt18uxa0N
+   1. line 8: PRODUCT_NAME
+   1. line 3: BoardConfig.mk folder location
+   1. line 4: device.mk folder location
+
+* in device/rockchip/rk312x/AndroidProducts.mk :  
+add $(LOCAL_DIR)/bzt18uxa0N.mk \ to PRODUCT_MAKEFILES
+
+* in device/rockchip/rk312x/vendorsetup.sh :  
+create `add_lunch_combo bzt18uxa0N-{variant}` commands for user,userdebug,eng builds.
+
+### Initial setup should be done.  
+At this point you would start copying the relevant portions of the bzt18uxa02 folder into the new product folder.   Once bzt18uxa01 is created, it will be a better starting place.  It should be ok to just copy the entire contents in and customize.  
+
+
+