diff --git a/ports/stm32/Makefile b/ports/stm32/Makefile
index 7c912f4f0b..f981f8f3eb 100644
--- a/ports/stm32/Makefile
+++ b/ports/stm32/Makefile
@@ -37,6 +37,9 @@ include $(TOP)/extmod/extmod.mk
 
 GIT_SUBMODULES += lib/libhydrogen lib/lwip lib/mbedtls lib/stm32lib
 
+query-variants:
+	$(ECHO) "VARIANTS:" $(BOARD_VARIANTS)
+
 LD_DIR=boards
 USBDEV_DIR=usbdev
 #USBHOST_DIR=usbhost
diff --git a/ports/stm32/boards/PYBLITEV10/mpconfigboard.mk b/ports/stm32/boards/PYBLITEV10/mpconfigboard.mk
index df95065225..89977b74ea 100644
--- a/ports/stm32/boards/PYBLITEV10/mpconfigboard.mk
+++ b/ports/stm32/boards/PYBLITEV10/mpconfigboard.mk
@@ -4,3 +4,24 @@ AF_FILE = boards/stm32f411_af.csv
 LD_FILES = boards/stm32f411.ld boards/common_ifs.ld
 TEXT0_ADDR = 0x08000000
 TEXT1_ADDR = 0x08020000
+
+# Provide different variants for the downloads page.
+BOARD_VARIANTS += "dp thread dp-thread network"
+
+ifeq ($(BOARD_VARIANT),"dp")
+MICROPY_FLOAT_IMPL=double
+endif
+
+ifeq ($(BOARD_VARIANT),"thread")
+CFLAGS += -DMICROPY_PY_THREAD=1
+endif
+
+ifeq ($(BOARD_VARIANT),"dp-thread")
+MICROPY_FLOAT_IMPL=double
+CFLAGS += -DMICROPY_PY_THREAD=1
+endif
+
+ifeq ($(BOARD_VARIANT),"network")
+MICROPY_PY_NETWORK_WIZNET5K=5200
+MICROPY_PY_CC3K=1
+endif
diff --git a/ports/stm32/boards/PYBV10/mpconfigboard.mk b/ports/stm32/boards/PYBV10/mpconfigboard.mk
index cb78a7846d..071ae6eb7c 100644
--- a/ports/stm32/boards/PYBV10/mpconfigboard.mk
+++ b/ports/stm32/boards/PYBV10/mpconfigboard.mk
@@ -14,3 +14,24 @@ endif
 
 # MicroPython settings
 MICROPY_VFS_LFS2 = 1
+
+# Provide different variants for the downloads page.
+BOARD_VARIANTS += "dp thread dp-thread network"
+
+ifeq ($(BOARD_VARIANT),"dp")
+MICROPY_FLOAT_IMPL=double
+endif
+
+ifeq ($(BOARD_VARIANT),"thread")
+CFLAGS += -DMICROPY_PY_THREAD=1
+endif
+
+ifeq ($(BOARD_VARIANT),"dp-thread")
+MICROPY_FLOAT_IMPL=double
+CFLAGS += -DMICROPY_PY_THREAD=1
+endif
+
+ifeq ($(BOARD_VARIANT),"network")
+MICROPY_PY_NETWORK_WIZNET5K=5200
+MICROPY_PY_CC3K=1
+endif
diff --git a/ports/stm32/boards/PYBV11/mpconfigboard.mk b/ports/stm32/boards/PYBV11/mpconfigboard.mk
index cb78a7846d..071ae6eb7c 100644
--- a/ports/stm32/boards/PYBV11/mpconfigboard.mk
+++ b/ports/stm32/boards/PYBV11/mpconfigboard.mk
@@ -14,3 +14,24 @@ endif
 
 # MicroPython settings
 MICROPY_VFS_LFS2 = 1
+
+# Provide different variants for the downloads page.
+BOARD_VARIANTS += "dp thread dp-thread network"
+
+ifeq ($(BOARD_VARIANT),"dp")
+MICROPY_FLOAT_IMPL=double
+endif
+
+ifeq ($(BOARD_VARIANT),"thread")
+CFLAGS += -DMICROPY_PY_THREAD=1
+endif
+
+ifeq ($(BOARD_VARIANT),"dp-thread")
+MICROPY_FLOAT_IMPL=double
+CFLAGS += -DMICROPY_PY_THREAD=1
+endif
+
+ifeq ($(BOARD_VARIANT),"network")
+MICROPY_PY_NETWORK_WIZNET5K=5200
+MICROPY_PY_CC3K=1
+endif
diff --git a/tools/autobuild/build-stm32-extra.sh b/tools/autobuild/build-stm32-extra.sh
index 80c6f42f5e..feb269e356 100755
--- a/tools/autobuild/build-stm32-extra.sh
+++ b/tools/autobuild/build-stm32-extra.sh
@@ -7,12 +7,15 @@ function do_build() {
     board=$2
     shift
     shift
-    echo "building $descr $board"
-    build_dir=/tmp/stm-build-$board
-    $MICROPY_AUTOBUILD_MAKE $@ BOARD=$board BUILD=$build_dir || exit 1
-    mv $build_dir/firmware.dfu $dest_dir/$descr$fw_tag.dfu
-    mv $build_dir/firmware.hex $dest_dir/$descr$fw_tag.hex
-    rm -rf $build_dir
+    for variant in `$MICROPY_AUTOBUILD_MAKE BOARD=$board query-variants | grep VARIANTS: | cut -d' ' -f2-`; do
+        target=$descr-$variant
+        echo "building $target $board"
+        build_dir=/tmp/stm-build-$board
+        $MICROPY_AUTOBUILD_MAKE $@ BOARD=$board BOARD_VARIANT=$variant BUILD=$build_dir || exit 1
+        mv $build_dir/firmware.dfu $dest_dir/$target$fw_tag.dfu
+        mv $build_dir/firmware.hex $dest_dir/$target$fw_tag.hex
+        rm -rf $build_dir
+    done
 }
 
 # check/get parameters
@@ -30,18 +33,7 @@ if [ ! -r modpyb.c ]; then
     exit 1
 fi
 
-# build the versions
-do_build pybv3 PYBV3
-do_build pybv3-network PYBV3 MICROPY_PY_NETWORK_WIZNET5K=5200 MICROPY_PY_CC3K=1
-do_build pybv10-dp PYBV10 MICROPY_FLOAT_IMPL=double
-do_build pybv10-thread PYBV10 CFLAGS_EXTRA='-DMICROPY_PY_THREAD=1'
-do_build pybv10-dp-thread PYBV10 MICROPY_FLOAT_IMPL=double CFLAGS_EXTRA='-DMICROPY_PY_THREAD=1'
-do_build pybv10-network PYBV10 MICROPY_PY_NETWORK_WIZNET5K=5200 MICROPY_PY_CC3K=1
-do_build pybv11-dp PYBV11 MICROPY_FLOAT_IMPL=double
-do_build pybv11-thread PYBV11 CFLAGS_EXTRA='-DMICROPY_PY_THREAD=1'
-do_build pybv11-dp-thread PYBV11 MICROPY_FLOAT_IMPL=double CFLAGS_EXTRA='-DMICROPY_PY_THREAD=1'
-do_build pybv11-network PYBV11 MICROPY_PY_NETWORK_WIZNET5K=5200 MICROPY_PY_CC3K=1
-do_build pyblitev10-dp PYBLITEV10 MICROPY_FLOAT_IMPL=double
-do_build pyblitev10-thread PYBLITEV10 CFLAGS_EXTRA='-DMICROPY_PY_THREAD=1'
-do_build pyblitev10-dp-thread PYBLITEV10 MICROPY_FLOAT_IMPL=double CFLAGS_EXTRA='-DMICROPY_PY_THREAD=1'
-do_build pyblitev10-network PYBLITEV10 MICROPY_PY_NETWORK_WIZNET5K=5200 MICROPY_PY_CC3K=1
+# build the variants for each board
+do_build pybv10 PYBV10
+do_build pybv11 PYBV11
+do_build pyblitev10 PYBLITEV10