commit 3cb6e2491a4dbc86727e98aeea0c603e54eecbe7 parent f8e36fa8d5fe482a96f4a9dbb2e38b32eb63808a Author: Stéphan Kochen <git@stephank.nl> Date: Wed, 02 Sep 2026 12:54:38 +0200 Add note about ESP-IDF limits
diff --git a/README b/README index fc3db5020d6327aed1a5368ecff6228423005141..64cd2ef84fc6df26aa22af6be4ea2836efaba86a 100644 --- a/README +++ b/README @@ -31,6 +31,20 @@ target: entity_id: valve.hunter_btt_valve ``` +# known issues + +"Characteristic 0000ffa5-... was not found!" has been seen with Bluetooth +proxies that use ESP32 / ESP-IDF. It's hitting an internal limit and truncating +the service list. In your ESPHome device config, raise the limit as follows: + +``` +esp32: + framework: + type: esp-idf + sdkconfig_options: + CONFIG_BT_GATTC_MAX_CACHE_CHAR: "64" +``` + # development ```