diff --git a/panda_connect.py b/panda_connect.py
deleted file mode 100644
index 7e80a189ab..0000000000
--- a/panda_connect.py
+++ /dev/null
@@ -1,29 +0,0 @@
-import asyncio
-from pathlib import Path
-
-import numpy as np
-
-from ophyd_async.core import StaticFilenameProvider, StaticPathProvider
-from ophyd_async.fastcs.panda import HDFPanda, SeqTable
-
-
-async def get_panda():
-    panda = HDFPanda(
-        "PANDA1:", StaticPathProvider(StaticFilenameProvider("test-panda"), Path("."))
-    )
-    await panda.connect()
-    assert isinstance(panda, HDFPanda)
-    table = await panda.seq[1].table.get_value()
-    assert isinstance(table, SeqTable)
-    print("OUTA1", table.outa1)
-    outa2 = table.outa2
-    position = table.position
-    assert isinstance(outa2, np.ndarray) and outa2.dtype == np.bool_, outa2.dtype
-    assert (
-        isinstance(position, np.ndarray) and position.dtype == np.int32
-    ), position.dtype
-
-    return panda
-
-
-asyncio.run(get_panda())
diff --git a/pyproject.toml b/pyproject.toml
index 9246ec9ba7..0b71859b4c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -99,8 +99,12 @@ addopts = """
     --doctest-glob="*.rst" --doctest-glob="*.md"
     --ignore=docs/examples --ignore=src/ophyd_async/epics/signal.py
     """
-# https://iscinumpy.gitlab.io/post/bound-version-constraints/#watch-for-warnings
-filterwarnings = "error"
+# "error" for https://iscinumpy.gitlab.io/post/bound-version-constraints/#watch-for-warnings
+# "tango" for https://github.com/bluesky/ophyd-async/issues/681
+filterwarnings = """
+error
+ignore::DeprecationWarning:tango.asyncio_executor:  
+"""
 # Doctest python code in docs, python code in src docstrings, test functions in tests
 testpaths = "docs src tests"
 log_format = "%(asctime)s,%(msecs)03d %(levelname)s (%(threadName)s) %(message)s"