From 26aec8999a3f59e24d21f6dd633021dbc799866e Mon Sep 17 00:00:00 2001 From: TD-er Date: Wed, 9 Sep 2020 16:42:20 +0200 Subject: [PATCH] Document hardware bug on Wemos DHT shield (#2569) --- docs/source/Plugin/P005_DHT11_DHT22.rst | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/docs/source/Plugin/P005_DHT11_DHT22.rst b/docs/source/Plugin/P005_DHT11_DHT22.rst index 395ad28f22..a4bd6363a3 100644 --- a/docs/source/Plugin/P005_DHT11_DHT22.rst +++ b/docs/source/Plugin/P005_DHT11_DHT22.rst @@ -104,6 +104,20 @@ Rules examples .. .. include:: P005_commands.repl +How to patch Wemos DHT shield +----------------------------- + +The Wemos DHT shield uses a pin which is also toggled at boot disrupting the connected DHT22 sensor. + +This causes the sensor to become unresponsive after a reboot. + +The DHT sensor needs to be connected to a configurable GPIO on the ESP module. +In case you have a simple ESP-01 module, it's best to use the GPIO-2 pin. + +See this `elaborate post on GitHub `_ +describing the problem and how to patch the board to make it work like it should. + + Where to buy ------------