Fix DSMR request pin diagram for 3V3 GPIO output (#3396)

The request pin diagram used a ballast resistor of 330 Ohm, which was based on a GPIO output of 5V. This should have been 200 Ohm, based on a GPIO output of 3.3V. This patch updates both the related description and the diagram image.
esphome · Nov 28, 2023 · 9eacd73 · 9eacd73
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diff --git a/components/sensor/dsmr.rst b/components/sensor/dsmr.rst
@@ -419,6 +419,9 @@ or a transistor-based circuit are not feasible options. Here's an example circui
 
 .. figure:: images/dsmr-request-pin-circuit-example.png
 
+When using a type of MCU that provides 5V on the GPIO outputs instead of 3.3V, then use a 330 Ohm
+resistor instead of the 200 Ohm resistor.
+
 .. _sensor-dsmr-improving_reader_results:
 
 Improving reader results

diff --git a/components/sensor/images/dsmr-request-pin-circuit-example.png b/components/sensor/images/dsmr-request-pin-circuit-example.png