From 3e5534caf75b9c7e56ebcb005109e004d466b280 Mon Sep 17 00:00:00 2001 From: Paul Sokolovsky <pfalcon@users.sourceforge.net> Date: Sun, 7 Aug 2016 22:41:34 +0300 Subject: [PATCH] docs/esp8266/intro: Focus on hazards of unearthed power wrt electronics. --- docs/esp8266/tutorial/intro.rst | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/docs/esp8266/tutorial/intro.rst b/docs/esp8266/tutorial/intro.rst index d067ec61d..8c356b913 100644 --- a/docs/esp8266/tutorial/intro.rst +++ b/docs/esp8266/tutorial/intro.rst @@ -116,12 +116,11 @@ after it, here are troubleshooting recommendations: in general. If you experience issues with self-made or wall-wart style power supply, try USB power from a computer. Unearthed power supplies are also known to cause problems as they source of increased EMI (electromagnetic interference) - - at the very least, as by the common safety standards they are considered - a hazard which may lead to electrical device breakdown and eletric shock to - humans. Please avoid using unearthed power connections at any time. In regard - to FlashROM hardware problems, there are independent (not related to MicroPython - in any way) reports - `(e.g.) <https://github.com/peterhinch/micropython-samples.git>`_ + - at the very least, and may lead to electrical devices breakdown. So, you are + advised to avoid using unearthed power connections when working with ESP8266 + and other boards. In regard to FlashROM hardware problems, there are independent + (not related to MicroPython in any way) reports + `(e.g.) <http://internetofhomethings.com/homethings/?p=538>`_ that on some ESP8266 modules, FlashROM can be programmed as little as 20 times before programming errors occur. This is *much* less than 100,000 programming cycles cited for FlashROM chips of a type used with ESP8266 by reputable -- GitLab