Button cells
Button cells can be deadly particularly to young children. This is a typical warning from a button cell data sheet:
Serious harm in as little as 2-hours if swallowed.
KEEP AWAY FROM CHILDREN.
Seek immediate medical help if swallowed.
See also BBC health: Button batteries pose ‘deadly’ risk to toddlers.
This project uses a button cell. The cell holder is designed to securely retain the cell and requires a tool to remove it. The very low sleep drain allows the cell to be left connected for long durations so the cell only needs to be removed to be replaced.
Soldering irons and Hot air
These tools produce high temperatures which can easily cause skin burns if not handles correctly, they also generate temperatures above the combustion temperature of paper so treat them as you would a naked flame.
Additional guidelines are provided in the environment section.
Solder and flux fumes
Please read the guidelines provided in the environment section.
General
The safety advice supplied, referenced or listed with any components, tools or equipment take priority over these guidelines provided in these pages or those in the associated repositories, please read and conform to them and do your own research where they aren’t explicitly provided.
While I have highlighted some higher risk activities, these are only guidelines and by no means exhaustive, please assess the risks yourself taking into account the particular environment, tools, materials, skills and experience of all participants.
THESE PAGES ARE ONLY GUIDELINES, PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE GUIDELINES OR THE USE OR THEIR DEALINGS IN THE GUIDELINES.