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--- home_automation:esphome:ota [2024/01/09 14:14] – created niziak
+++ home_automation:esphome:ota [2024/02/16 10:06] (current) – niziak
@@ Line 1: / Line 1: @@
 ====== ota ======
+===== ESP does not have enough space =====
+<code>
 ERROR Error binary size: Error: ESP does not have enough space to store OTA file. Please try flashing a minimal firmware (remove everything except ota)
+</code>
+It is great chance that ESP8266 is equipped with 1M flash. So change board definition in yaml
+from
+<code yaml>
+board: esp01
+# or
+board: esp8285
+</code>
+to
+<code yaml>
+board: esp01_1m
+</code>
+or for 4M to
+<code yaml>
+board: d1_mini
+</code>
+===== minimal firmware =====
+<code yaml>
+esphome:
+  ...
+wifi:
+  ...
+esp8266:
+  board: ...
+ota:
+</code>
+===== detect real flash size remotely =====
+<code yaml>
+debug:
+sensor:
+- platform: template
+  name: Flash Real Size
+  lambda: |-
+    return ESP.getFlashChipRealSize();
+  update_interval: 10s
+</code>