From e95c4133c35c50bcee8c19b0871214e29ef14a89 Mon Sep 17 00:00:00 2001 From: Ockert Marais Date: Thu, 10 Jun 2021 12:48:32 +0200 Subject: [PATCH] Update ads1115.rst Multiplexer and Gain (#1232) Update ads1115.rst notes with gentle warning about over voltage measurement which is not entirely clear at first sight / observation of the sensor. --- components/sensor/ads1115.rst | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/components/sensor/ads1115.rst b/components/sensor/ads1115.rst index 8b7d162dd..bdd361ed3 100644 --- a/components/sensor/ads1115.rst +++ b/components/sensor/ads1115.rst @@ -93,9 +93,15 @@ Configuration variables: to check the sensor. Defaults to ``60s``. - **id** (*Optional*, :ref:`config-id`): Manually specify the ID used for code generation. -Multiplexer And Gain +Multiplexer and Gain -------------------- +.. note:: + + As per (`datasheet `__, `Adafruit`_) Section 7.3 Note 2: + "No more than VDD + 0.3V must be applied to the analog inputs of the device." + This means if you power the device with 3.3V, take care not to supply the 4 AIN pins with more than 3.6V. + The ADS1115 has a multiplexer that can be configured to measure voltage between several pin configurations. These are: - ``A0_A1`` (between Pin 0 and Pin 1)