diff --git a/.github/workflows/build_esp32.yml b/.github/workflows/build_esp32.yml
index 79e0ea4..866801c 100644
--- a/.github/workflows/build_esp32.yml
+++ b/.github/workflows/build_esp32.yml
@@ -4,164 +4,142 @@ name: ESP32
 on:
   push:
   pull_request:
-    paths-ignore:
-      - "examples/**"
-      - "README.md"
-      - "ci/*unix*.sh"
-      - ".github/workflows/build_unix.yml"
+    paths:
+      - ".github/workflows/build_esp32.yml"
+      - "micropython-modules/microlite/**"
+      - "micropython-modules/micropython-camera-driver/**"
+      
 
 jobs:
   tensorflow_micropython_esp32_build:
     runs-on: ubuntu-latest
 
     steps:
-      - name: Checkout repository
-        uses: actions/checkout@v2
-      - name: Prepare to Build Tensorflow Micropython Firmware for ESP32
-        run: |
-          git submodule init
-          git submodule update --recursive
-          cd micropython
-          git submodule update --init lib/axtls
-          git submodule update --init lib/berkeley-db-1.xx
-          cd ports/esp32
-          make BOARD= submodules
-          cd ../../..
-          cd tflm_esp_kernels
-          git submodule update --init components/esp32-camera
-          git submodule update --init components/esp-nn
-      - name: Get Cache Keys
-        # later get this like this: git ls-remote --heads https://github.com/espressif/esp-idf
-        # this commit is hard-coded in micropython/tools/ci.sh
-        run: |
-          IDF_COMMIT=142bb32c50fa9875b8b69fa539a2d59559460d72
-          echo "esp-idf-commit=$IDF_COMMIT" >> $GITHUB_ENV
-          TFLM_COMMIT=$(git submodule status tensorflow | awk '{print ($1)}')
-          echo "tflm-commit=$TFLM_COMMIT" >> $GITHUB_ENV
-      #      - name: Cache esp-idf
-      #        id: cache-esp-idf
-      #        uses: actions/cache@v2
-      #        env:
-      #          cache-name: cache-esp-idf
-      #        with:
-      #          path: ./esp-idf
-      #          key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ env.esp-idf-commit }}
-      - name: Setup IDF
-        #        if: steps.cache-esp-idf.outputs.cache-hit != 'true'
-        run: |
-          source ./micropython/tools/ci.sh && ci_esp32_idf50_setup
-      - name: Cache tflm
-        id: cache-tflm
-        uses: actions/cache@v2
-        env:
-          cache-name: cache-tflm
-        with:
-          path: ./micropython-modules/microlite/tflm
-          key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ env.tflm-commit }}
-      - name: Setup Build for Tensorflow
-#        if: steps.cache-tflm.outputs.cache-hit != 'true'
+      # - name: Checkout repository
+      #   uses: actions/checkout@v4
+      #   with:
+      #     repository: 'm'
+      #     path: ''
+      # - uses: actions/setup-python@v2
+      #   with:
+      #     python-version: '3.9'  
+      # - name: Setup cmake
+      #   uses: jwlawson/actions-setup-cmake@v1.13
+      #   with:
+      #     cmake-version: '3.18.4'
+      - name: Get Date
+        id: get-date
         run: |
+          echo "date=$(/bin/date -u "+%Y%m%d")" >> $GITHUB_OUTPUT
+        shell: bash
+      # - uses: actions/cache@v3
+      #   id: cache
+      #   with:
+      #     path: | 
+      #       dependencies/**  
+      #       esp-idf/**
+      #     key: ${{ steps.get-date.outputs.date }}
 
-          source ./esp-idf/export.sh
-
+      - name: Prepare to Build Tensorflow Micropython Firmware for ESP32
+        # if: steps.cache.outputs.cache-hit != 'true'
+        run: |
+          pwd
+          echo "working directory"
+          ls
+          echo "parent directory"
+          ls ..
+          echo "runner files"
+          find /home/runner/work -ls
+          python --version
+          cmake --version
+          getconf ARG_MAX
+          which python
           pip3 install Pillow
           pip3 install Wave
-
-          echo "Regenerating microlite/tfm directory"
-          rm -rf ./micropython-modules/microlite/tflm
-
-          cd ./tensorflow
-
-          ../micropython-modules/microlite/prepare-tflm-esp.sh
-
-      - name: Build micropython cross compiler
-        run: |
-          source ./esp-idf/export.sh
-          cd ./micropython
-          echo "make -C mpy-cross V=1 clean all"
-          make -C mpy-cross V=1 clean all
-
-      - name: Build standard non-psram 4MB Flash firmware
-        run: |
-          source ./esp-idf/export.sh
-
-          echo "cd ./boards/esp32/MICROLITE"
-          cd ./boards/esp32/MICROLITE
-
-          echo "Building MICROLITE"
-          rm -rf builds
-          idf.py clean build
-
-          ../../../micropython-modules/microlite/assemble-unified-image-esp.sh \
-          ../../../micropython/ports/esp32
+          source ./scripts/build.sh && prepare_dependencies
+          source ./dependencies/micropython/tools/ci.sh && ci_esp32_idf50_setup
+          echo "BUILDING MICROLITE"
+          source ./scripts/build.sh && build_esp32 "MICROLITE"
+          ./scripts/assemble-unified-image-esp.sh ./dependencies/micropython "MICROLITE"
+        shell: bash
+
+      # - name: Build standard non-psram 4MB Flash firmware
+      #   run: |
+      #     pip3 install Pillow
+      #     pip3 install Wave
+      #     rm -rf ./dependencies/micropython/ports/esp32/build-MICROLITE
+      #     source ./esp-idf/export.sh
+      #     source ./scripts/build.sh && build_esp32 "MICROLITE"
+      #     ./scripts/assemble-unified-image-esp.sh ./dependencies/micropython/ports/esp32 "MICROLITE"
+      #   shell: bash  
 
       - name: Archive ESP32-MICROLITE firmware
         uses: actions/upload-artifact@v2
         with:
           name: microlite-esp32-firmware
           path: |
-            boards/esp32/MICROLITE/build/firmware.bin
+            dependencies/micropython/build-MICROLITE/firmware.bin
 
-      - name: Build with psram support and 16MB Flash firmware
-        run: |
-          source ./esp-idf/export.sh
+      # - name: Build with psram support and 16MB Flash firmware
+      #   run: |
+      #     source ./esp-idf/export.sh
 
-          echo "cd ./boards/esp32/MICROLITE_SPIRAM_16M"
-          cd ./boards/esp32/MICROLITE_SPIRAM_16M
+      #     echo "cd ./boards/esp32/MICROLITE_SPIRAM_16M"
+      #     cd ./boards/esp32/MICROLITE_SPIRAM_16M
 
-          echo "Building MICROLITE_SPIRAM_16M"
-          rm -rf build
-          idf.py clean build
+      #     echo "Building MICROLITE_SPIRAM_16M"
+      #     rm -rf build
+      #     idf.py clean build
 
-          ../../../micropython-modules/microlite/assemble-unified-image-esp.sh \
-          ../../../micropython/ports/esp32
+      #     ../../../micropython-modules/microlite/assemble-unified-image-esp.sh \
+      #     ../../../micropython/ports/esp32
 
-      - name: Archive ESP32-MICROLITE-SPIRAM-16M firmware
-        uses: actions/upload-artifact@v2
-        with:
-          name: microlite-spiram-16m-esp32-firmware
-          path: |
-            boards/esp32/MICROLITE_SPIRAM_16M/build/firmware.bin
+      # - name: Archive ESP32-MICROLITE-SPIRAM-16M firmware
+      #   uses: actions/upload-artifact@v2
+      #   with:
+      #     name: microlite-spiram-16m-esp32-firmware
+      #     path: |
+      #       boards/esp32/MICROLITE_SPIRAM_16M/build/firmware.bin
 
-      - name: Build with psram support
-        run: |
-          source ./esp-idf/export.sh
+      # - name: Build with psram support
+      #   run: |
+      #     source ./esp-idf/export.sh
 
-          echo "cd ./boards/esp32/MICROLITE_SPIRAM"
-          cd ./boards/esp32/MICROLITE_SPIRAM
+      #     echo "cd ./boards/esp32/MICROLITE_SPIRAM"
+      #     cd ./boards/esp32/MICROLITE_SPIRAM
 
-          echo "Building MICROLITE_SPIRAM"
-          rm -rf build
-          idf.py clean build
+      #     echo "Building MICROLITE_SPIRAM"
+      #     rm -rf build
+      #     idf.py clean build
 
-          ../../../micropython-modules/microlite/assemble-unified-image-esp.sh \
-          ../../../micropython/ports/esp32
+      #     ../../../micropython-modules/microlite/assemble-unified-image-esp.sh \
+      #     ../../../micropython/ports/esp32
 
-      - name: Archive ESP32-MICROLITE-SPIRAM firmware
-        uses: actions/upload-artifact@v2
-        with:
-          name: microlite-spiram-esp32-firmware
-          path: |
-            boards/esp32/MICROLITE_SPIRAM/build/firmware.bin
+      # - name: Archive ESP32-MICROLITE-SPIRAM firmware
+      #   uses: actions/upload-artifact@v2
+      #   with:
+      #     name: microlite-spiram-esp32-firmware
+      #     path: |
+      #       boards/esp32/MICROLITE_SPIRAM/build/firmware.bin
 
-      - name: Build MICROLITE_SPIRAM_CAM
-        run: |
+      # - name: Build MICROLITE_SPIRAM_CAM
+      #   run: |
 
-          source ./esp-idf/export.sh
+      #     source ./esp-idf/export.sh
 
-          echo "cd ./boards/esp32/MICROLITE_SPIRAM_CAM"
-          cd ./boards/esp32/MICROLITE_SPIRAM_CAM
+      #     echo "cd ./boards/esp32/MICROLITE_SPIRAM_CAM"
+      #     cd ./boards/esp32/MICROLITE_SPIRAM_CAM
 
-          echo "Building MICROLITE_SPIRAM_CAM"
-          rm -rf builds
-          idf.py clean build
+      #     echo "Building MICROLITE_SPIRAM_CAM"
+      #     rm -rf builds
+      #     idf.py clean build
 
-          ../../../micropython-modules/microlite/assemble-unified-image-esp.sh \
-          ../../../micropython/ports/esp32
+      #     ../../../micropython-modules/microlite/assemble-unified-image-esp.sh \
+      #     ../../../micropython/ports/esp32
 
-      - name: Archive ESP32-MICROLITE_SPIRAM_CAM firmware
-        uses: actions/upload-artifact@v2
-        with:
-          name: microlite-spiram-cam-esp32-firmware
-          path: |
-            boards/esp32/MICROLITE_SPIRAM_CAM/build/firmware.bin
+      # - name: Archive ESP32-MICROLITE_SPIRAM_CAM firmware
+      #   uses: actions/upload-artifact@v2
+      #   with:
+      #     name: microlite-spiram-cam-esp32-firmware
+      #     path: |
+      #       boards/esp32/MICROLITE_SPIRAM_CAM/build/firmware.bin
diff --git a/boards/esp32/MICROLITE/mpconfigboard.cmake b/boards/esp32/MICROLITE/mpconfigboard.cmake
index 5daac41..8f73275 100644
--- a/boards/esp32/MICROLITE/mpconfigboard.cmake
+++ b/boards/esp32/MICROLITE/mpconfigboard.cmake
@@ -1,7 +1,7 @@
 set(SDKCONFIG_DEFAULTS
     boards/sdkconfig.base
     boards/sdkconfig.ble
-    ../../../../boards/esp32/ESP32_GENERIC/sdkconfig.partition
+    ../../../../boards/esp32/MICROLITE/sdkconfig.partition
 )
 
 if(MICROPY_BOARD_VARIANT STREQUAL "D2WD")
@@ -53,6 +53,4 @@ set(USER_C_MODULES
     ${CMAKE_CURRENT_LIST_DIR}/../../../micropython-modules/micropython.cmake
 )
 
-# set (COMPONENTS esp-tflite-micro)
-# list(APPEND IDF_COMPONENTS esp-tflite-micro)
 list(APPEND EXTRA_COMPONENT_DIRS ${CMAKE_CURRENT_LIST_DIR}/../../../dependencies/tflite-micro-esp-examples/components/esp-tflite-micro)
\ No newline at end of file
diff --git a/boards/esp32/MICROLITE/sdkconfig.partition b/boards/esp32/MICROLITE/sdkconfig.partition
index 7bdf94a..ec73dc2 100644
--- a/boards/esp32/MICROLITE/sdkconfig.partition
+++ b/boards/esp32/MICROLITE/sdkconfig.partition
@@ -4,4 +4,4 @@
 #CONFIG_ESPTOOLPY_FLASHSIZE_2MB=y
 CONFIG_PARTITION_TABLE_CUSTOM=y
 # move back up from micropython/ports/esp32 to the main project source code
-CONFIG_PARTITION_TABLE_CUSTOM_FILENAME="../../../../boards/esp32/ESP32_GENERIC/custom-partitions.csv"
+CONFIG_PARTITION_TABLE_CUSTOM_FILENAME="../../../../boards/esp32/MICROLITE/custom-partitions.csv"
diff --git a/boards/esp32/MICROLITE_C3/CMakeLists.txt b/boards/esp32/MICROLITE_C3/CMakeLists.txt
deleted file mode 100644
index 1fdbb5e..0000000
--- a/boards/esp32/MICROLITE_C3/CMakeLists.txt
+++ /dev/null
@@ -1,32 +0,0 @@
-# Top-level cmake file for building MicroPython on ESP32.
-# Nothing in here needs to be customised, it will work for any board.
-
-cmake_minimum_required(VERSION 3.12)
-
-# Set the location of MicroPython, the esp32 port, and the board directory.
-get_filename_component(PROJECT_DIR "../../.." ABSOLUTE)
-set(MICROPY_PORT_DIR ${PROJECT_DIR}/micropython/ports/esp32)
-get_filename_component(MICROPY_BOARD_DIR "." ABSOLUTE)
-
-message (STATUS "PROJECT_DIR=${PROJECT_DIR}")
-message (STATUS "MICROPY_PORT_DIR=${MICROPY_PORT_DIR}")
-message (STATUS "MICROPY_BOARD_DIR=${MICROPY_BOARD_DIR}")
-
-# Define the output sdkconfig so it goes in the build directory.
-set(SDKCONFIG ${CMAKE_BINARY_DIR}/sdkconfig)
-
-# Include board config; this is expected to set SDKCONFIG_DEFAULTS (among other options).
-include(${MICROPY_BOARD_DIR}/mpconfigboard.cmake)
-
-# Concatenate all sdkconfig files into a combined one for the IDF to use.
-file(WRITE ${CMAKE_BINARY_DIR}/sdkconfig.combined.in "")
-foreach(SDKCONFIG_DEFAULT ${SDKCONFIG_DEFAULTS})
-    file(READ ${SDKCONFIG_DEFAULT} CONTENTS)
-    file(APPEND ${CMAKE_BINARY_DIR}/sdkconfig.combined.in "${CONTENTS}")
-endforeach()
-configure_file(${CMAKE_BINARY_DIR}/sdkconfig.combined.in ${CMAKE_BINARY_DIR}/sdkconfig.combined COPYONLY)
-set(SDKCONFIG_DEFAULTS ${CMAKE_BINARY_DIR}/sdkconfig.combined)
-
-# Include main IDF cmake file and define the project.
-include($ENV{IDF_PATH}/tools/cmake/project.cmake)
-project(micropython)
\ No newline at end of file
diff --git a/boards/esp32/MICROLITE_C3_USB/board.json b/boards/esp32/MICROLITE_C3/board.json
similarity index 83%
rename from boards/esp32/MICROLITE_C3_USB/board.json
rename to boards/esp32/MICROLITE_C3/board.json
index 23f9a8e..4a81d22 100644
--- a/boards/esp32/MICROLITE_C3_USB/board.json
+++ b/boards/esp32/MICROLITE_C3/board.json
@@ -5,14 +5,14 @@
     "docs": "",
     "features": [
         "BLE",
+        "External Flash",
         "WiFi"
     ],
-    "id": "esp32c3-usb",
     "images": [
         "esp32c3_devkitmini.jpg"
     ],
     "mcu": "esp32c3",
-    "product": "ESP32-C3 with USB",
+    "product": "ESP32-C3",
     "thumbnail": "",
     "url": "https://www.espressif.com/en/products/modules",
     "vendor": "Espressif"
diff --git a/boards/esp32/MICROLITE_C3/board.md b/boards/esp32/MICROLITE_C3/board.md
new file mode 100644
index 0000000..1604b87
--- /dev/null
+++ b/boards/esp32/MICROLITE_C3/board.md
@@ -0,0 +1,7 @@
+The following files are firmware images that should work on most
+ESP32-C3-based boards with 4MiB of flash, including WROOM and MINI modules,
+that use the revision 3 silicon (or newer).
+
+USB serial/JTAG support is enabled on pin 18 and 19. Note that this
+is not a full USB stack, the C3 just provides a CDC/ACM class serial
+and JTAG interface.
diff --git a/boards/esp32/MICROLITE_C3/main/CMakeLists.txt b/boards/esp32/MICROLITE_C3/main/CMakeLists.txt
deleted file mode 100644
index b8bec33..0000000
--- a/boards/esp32/MICROLITE_C3/main/CMakeLists.txt
+++ /dev/null
@@ -1,13 +0,0 @@
-# Include MicroPython ESP32 component.
-
-get_filename_component(CURRENT_DIR "." ABSOLUTE)
-
-message(STATUS "microlite/main/cmake: CURRENT_DIR=${CURRENT_DIR}")
-
-get_filename_component(MICROPY_DIR "../../../../micropython" ABSOLUTE)
-
-
-message (STATUS "microlite/main/cmake: MICROPY_DIR=${MICROPY_DIR}")
-
-set(PROJECT_DIR ${MICROPY_DIR}/ports/esp32)
-include(${PROJECT_DIR}/main/CMakeLists.txt)
\ No newline at end of file
diff --git a/boards/esp32/MICROLITE_C3/mpconfigboard.cmake b/boards/esp32/MICROLITE_C3/mpconfigboard.cmake
index b6f6f4b..0a76fdc 100644
--- a/boards/esp32/MICROLITE_C3/mpconfigboard.cmake
+++ b/boards/esp32/MICROLITE_C3/mpconfigboard.cmake
@@ -1,18 +1,14 @@
-set (IDF_TARGET esp32c3)
+set(IDF_TARGET esp32c3)
 
 set(SDKCONFIG_DEFAULTS
-    ${MICROPY_PORT_DIR}/boards/sdkconfig.base
-    ${MICROPY_PORT_DIR}/boards/sdkconfig.ble
-    ${MICROPY_BOARD_DIR}/sdkconfig.partition
-
+    boards/sdkconfig.base
+    boards/sdkconfig.ble
+    boards/ESP32_GENERIC_C3/sdkconfig.c3usb
+    ../../../../boards/esp32/MICROLITE_C3/sdkconfig.partition
 )
 
-message (STATUS "mpconfigboard.cmake: PROJECT_DIR=${PROJECT_DIR}")
-
 set(USER_C_MODULES
-    ${PROJECT_DIR}/micropython-modules/micropython.cmake
+    ${CMAKE_CURRENT_LIST_DIR}/../../../micropython-modules/micropython.cmake
 )
 
-if(NOT MICROPY_FROZEN_MANIFEST)
-    set(MICROPY_FROZEN_MANIFEST ${MICROPY_PORT_DIR}/boards/manifest.py)
-endif()
+list(APPEND EXTRA_COMPONENT_DIRS ${CMAKE_CURRENT_LIST_DIR}/../../../dependencies/tflite-micro-esp-examples/components/esp-tflite-micro)
diff --git a/boards/esp32/MICROLITE_C3/mpconfigboard.h b/boards/esp32/MICROLITE_C3/mpconfigboard.h
index 02bad4c..6e2545d 100644
--- a/boards/esp32/MICROLITE_C3/mpconfigboard.h
+++ b/boards/esp32/MICROLITE_C3/mpconfigboard.h
@@ -1,9 +1,11 @@
 // This configuration is for a generic ESP32C3 board with 4MiB (or more) of flash.
 
-#define MICROPY_HW_BOARD_NAME               "ESP32C3 module (microlite)"
-#define MICROPY_HW_MCU_NAME                 "ESP32C3"
+#define MICROPY_HW_BOARD_NAME               "Microlite ESP32C3 module"
+#define MICROPY_HW_MCU_NAME                 "Microlite ESP32C3"
 
 #define MICROPY_HW_ENABLE_SDCARD            (0)
 #define MICROPY_PY_MACHINE_DAC              (0)
-// TODO: early esp-idf's didn't support i2s.  check if this still applies
 #define MICROPY_PY_MACHINE_I2S              (0)
+
+// Enable UART REPL for modules that have an external USB-UART and don't use native USB.
+#define MICROPY_HW_ENABLE_UART_REPL         (1)
diff --git a/boards/esp32/MICROLITE_C3/sdkconfig.c3usb b/boards/esp32/MICROLITE_C3/sdkconfig.c3usb
new file mode 100644
index 0000000..d9e7c7f
--- /dev/null
+++ b/boards/esp32/MICROLITE_C3/sdkconfig.c3usb
@@ -0,0 +1,7 @@
+CONFIG_ESP32C3_REV_MIN_3=y
+CONFIG_ESP32C3_BROWNOUT_DET=y
+CONFIG_ESP32C3_BROWNOUT_DET_LVL_SEL_7=
+CONFIG_ESP32C3_BROWNOUT_DET_LVL_SEL_4=y
+CONFIG_ESP32C3_BROWNOUT_DET_LVL=4
+CONFIG_ESP_CONSOLE_UART_DEFAULT=
+CONFIG_ESP_CONSOLE_USB_SERIAL_JTAG=y
diff --git a/boards/esp32/MICROLITE_C3/sdkconfig.partition b/boards/esp32/MICROLITE_C3/sdkconfig.partition
index 2543d5b..cb13b00 100644
--- a/boards/esp32/MICROLITE_C3/sdkconfig.partition
+++ b/boards/esp32/MICROLITE_C3/sdkconfig.partition
@@ -4,4 +4,4 @@
 #CONFIG_ESPTOOLPY_FLASHSIZE_2MB=y
 CONFIG_PARTITION_TABLE_CUSTOM=y
 # move back up from micropython/ports/esp32 to the main project source code
-CONFIG_PARTITION_TABLE_CUSTOM_FILENAME="../../../boards/esp32/MICROLITE_C3/custom-partitions.csv"
+CONFIG_PARTITION_TABLE_CUSTOM_FILENAME="../../../../boards/esp32/MICROLITE_C3/custom-partitions.csv"
diff --git a/boards/esp32/MICROLITE_C3_USB/CMakeLists.txt b/boards/esp32/MICROLITE_C3_USB/CMakeLists.txt
deleted file mode 100644
index 1fdbb5e..0000000
--- a/boards/esp32/MICROLITE_C3_USB/CMakeLists.txt
+++ /dev/null
@@ -1,32 +0,0 @@
-# Top-level cmake file for building MicroPython on ESP32.
-# Nothing in here needs to be customised, it will work for any board.
-
-cmake_minimum_required(VERSION 3.12)
-
-# Set the location of MicroPython, the esp32 port, and the board directory.
-get_filename_component(PROJECT_DIR "../../.." ABSOLUTE)
-set(MICROPY_PORT_DIR ${PROJECT_DIR}/micropython/ports/esp32)
-get_filename_component(MICROPY_BOARD_DIR "." ABSOLUTE)
-
-message (STATUS "PROJECT_DIR=${PROJECT_DIR}")
-message (STATUS "MICROPY_PORT_DIR=${MICROPY_PORT_DIR}")
-message (STATUS "MICROPY_BOARD_DIR=${MICROPY_BOARD_DIR}")
-
-# Define the output sdkconfig so it goes in the build directory.
-set(SDKCONFIG ${CMAKE_BINARY_DIR}/sdkconfig)
-
-# Include board config; this is expected to set SDKCONFIG_DEFAULTS (among other options).
-include(${MICROPY_BOARD_DIR}/mpconfigboard.cmake)
-
-# Concatenate all sdkconfig files into a combined one for the IDF to use.
-file(WRITE ${CMAKE_BINARY_DIR}/sdkconfig.combined.in "")
-foreach(SDKCONFIG_DEFAULT ${SDKCONFIG_DEFAULTS})
-    file(READ ${SDKCONFIG_DEFAULT} CONTENTS)
-    file(APPEND ${CMAKE_BINARY_DIR}/sdkconfig.combined.in "${CONTENTS}")
-endforeach()
-configure_file(${CMAKE_BINARY_DIR}/sdkconfig.combined.in ${CMAKE_BINARY_DIR}/sdkconfig.combined COPYONLY)
-set(SDKCONFIG_DEFAULTS ${CMAKE_BINARY_DIR}/sdkconfig.combined)
-
-# Include main IDF cmake file and define the project.
-include($ENV{IDF_PATH}/tools/cmake/project.cmake)
-project(micropython)
\ No newline at end of file
diff --git a/boards/esp32/MICROLITE_C3_USB/custom-partitions.csv b/boards/esp32/MICROLITE_C3_USB/custom-partitions.csv
deleted file mode 100644
index a3569b8..0000000
--- a/boards/esp32/MICROLITE_C3_USB/custom-partitions.csv
+++ /dev/null
@@ -1,10 +0,0 @@
-# Notes: the offset of the partition table itself is set in
-# $ESPIDF/components/partition_table/Kconfig.projbuild and the
-# offset of the factory/ota_0 partition is set in makeimg.py
-# I needed to increase the size of the app partition to fit the tensorflow microlite library
-# There is 1/2 as much data partition as with standard micropython on esp32 4MiB.
-# Name,   Type, SubType, Offset,  Size, Flags
-nvs,      data, nvs,     0x9000,  0x6000,
-phy_init, data, phy,     0xf000,  0x1000,
-factory,  app,  factory, 0x10000, 0x280000,
-vfs,      data, fat,     0x300000, 0x100000,
diff --git a/boards/esp32/MICROLITE_C3_USB/main/CMakeLists.txt b/boards/esp32/MICROLITE_C3_USB/main/CMakeLists.txt
deleted file mode 100644
index b8bec33..0000000
--- a/boards/esp32/MICROLITE_C3_USB/main/CMakeLists.txt
+++ /dev/null
@@ -1,13 +0,0 @@
-# Include MicroPython ESP32 component.
-
-get_filename_component(CURRENT_DIR "." ABSOLUTE)
-
-message(STATUS "microlite/main/cmake: CURRENT_DIR=${CURRENT_DIR}")
-
-get_filename_component(MICROPY_DIR "../../../../micropython" ABSOLUTE)
-
-
-message (STATUS "microlite/main/cmake: MICROPY_DIR=${MICROPY_DIR}")
-
-set(PROJECT_DIR ${MICROPY_DIR}/ports/esp32)
-include(${PROJECT_DIR}/main/CMakeLists.txt)
\ No newline at end of file
diff --git a/boards/esp32/MICROLITE_C3_USB/mpconfigboard.cmake b/boards/esp32/MICROLITE_C3_USB/mpconfigboard.cmake
deleted file mode 100644
index b6f6f4b..0000000
--- a/boards/esp32/MICROLITE_C3_USB/mpconfigboard.cmake
+++ /dev/null
@@ -1,18 +0,0 @@
-set (IDF_TARGET esp32c3)
-
-set(SDKCONFIG_DEFAULTS
-    ${MICROPY_PORT_DIR}/boards/sdkconfig.base
-    ${MICROPY_PORT_DIR}/boards/sdkconfig.ble
-    ${MICROPY_BOARD_DIR}/sdkconfig.partition
-
-)
-
-message (STATUS "mpconfigboard.cmake: PROJECT_DIR=${PROJECT_DIR}")
-
-set(USER_C_MODULES
-    ${PROJECT_DIR}/micropython-modules/micropython.cmake
-)
-
-if(NOT MICROPY_FROZEN_MANIFEST)
-    set(MICROPY_FROZEN_MANIFEST ${MICROPY_PORT_DIR}/boards/manifest.py)
-endif()
diff --git a/boards/esp32/MICROLITE_C3_USB/mpconfigboard.h b/boards/esp32/MICROLITE_C3_USB/mpconfigboard.h
deleted file mode 100644
index 1622db6..0000000
--- a/boards/esp32/MICROLITE_C3_USB/mpconfigboard.h
+++ /dev/null
@@ -1,8 +0,0 @@
-// This configuration is for a generic ESP32C3 board with 4MiB (or more) of flash.
-
-#define MICROPY_HW_BOARD_NAME               "ESP32C3 module (microlite)"
-#define MICROPY_HW_MCU_NAME                 "ESP32C3"
-
-#define MICROPY_HW_ENABLE_SDCARD            (0)
-#define MICROPY_PY_MACHINE_DAC              (0)
-#define MICROPY_PY_MACHINE_I2S              (0)
diff --git a/boards/esp32/MICROLITE_C3_USB/sdkconfig.partition b/boards/esp32/MICROLITE_C3_USB/sdkconfig.partition
deleted file mode 100644
index 6d7decd..0000000
--- a/boards/esp32/MICROLITE_C3_USB/sdkconfig.partition
+++ /dev/null
@@ -1,21 +0,0 @@
-# -- from GENERIC_C3_USB start --
-
-CONFIG_ESP32C3_REV_MIN_3=y
-CONFIG_ESP32C3_REV_MIN=3
-CONFIG_ESP32C3_BROWNOUT_DET=y
-CONFIG_ESP32C3_BROWNOUT_DET_LVL_SEL_7=
-CONFIG_ESP32C3_BROWNOUT_DET_LVL_SEL_4=y
-CONFIG_ESP32C3_BROWNOUT_DET_LVL=4
-CONFIG_ESP_CONSOLE_UART_DEFAULT=
-CONFIG_ESP_CONSOLE_USB_CDC=
-CONFIG_ESP_CONSOLE_USB_SERIAL_JTAG=y
-
-# -- from GENERIC_C3_USB end --
-
-# MICROLITE 4M flash partition adjustment
-#CONFIG_ESPTOOLPY_FLASHMODE_DIO=y
-#CONFIG_ESPTOOLPY_FLASHFREQ_40M=y
-#CONFIG_ESPTOOLPY_FLASHSIZE_2MB=y
-CONFIG_PARTITION_TABLE_CUSTOM=y
-# move back up from micropython/ports/esp32 to the main project source code
-CONFIG_PARTITION_TABLE_CUSTOM_FILENAME="../../../boards/esp32/MICROLITE_C3_USB/custom-partitions.csv"
diff --git a/scripts/build.sh b/scripts/build.sh
index 1ae32e2..7ba7612 100644
--- a/scripts/build.sh
+++ b/scripts/build.sh
@@ -1,5 +1,13 @@
 #!bin/bash
 
+MAKEOPTS=
+
+# if which nproc > /dev/null; then
+#     MAKEOPTS="-j$(nproc)"
+# else
+#     MAKEOPTS="-j$(sysctl -n hw.ncpu)"
+# fi
+
 function prepare_dependencies {
 
     rm -rf dependencies
@@ -36,17 +44,40 @@ function prepare_dependencies {
     # build : 
     # $ cd dependencies/micropython/ports/esp32
     # $ 
-    cd micropython
-    git submodule init
-    git submodule update --recursive
+    # cd micropython
+    # git submodule init
+    # git submodule update --recursive
+
+    # cd ../..
+    cd ..
 }
 
 function build_esp32 {
+    BOARD=$1
+    if test -z "$BOARD"; then
+    	echo "USAGE: build_esp32 <microlite board name>"
+	    exit 1;
+    fi
+    pwd
+    python --version
+    which python
+    # xargs --show-limits
+    source esp-idf/export.sh
+    cd dependencies/micropython
+    make ${MAKEOPTS} -C mpy-cross
+    cd ports/esp32
+    make ${MAKEOPTS} submodules
+    
+    PWD=$(pwd)
+    echo "make ${MAKEOPTS} V=1 BOARD_DIR=$(pwd)/../../../../boards/esp32/${BOARD} BOARD=${BOARD} FROZEN_MANIFEST=$PWD/boards/manifest.py"
+
+    make ${MAKEOPTS} V=1 \
+        BOARD_DIR=$(pwd)/../../../../boards/esp32/${BOARD} \
+        BOARD=${BOARD} 
 
-    cd dependencies/micropython/ports/esp32    
-    make BOARD_DIR=../../../../boards/esp32/MICROLITE
     # creates the build into dependencies/micropython/ports/esp32/build-MICROLITE
-
+    # find build-${BOARD} -ls
+    cd ../..
 }