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Step 2Safety issues
There are a few serious safety issues to consider before beginning this project. Please do not skip to the next step without first carefully considering these.
Rock climbing is inherently dangerous. Obviously, this danger is largely mitigated by the careful use of ropes, harnesses and other safety equipment but the danger is always present. Never go rock climbing if you are not fully competent and confident in the various techniques involved (belaying, leading, rigging, etc.).
This project involves soldering and working with electrical circuits. Always do both of these in well-ventilated, uncluttered and dry environments, using sensible precautions to avoid burns, fires and electric shocks.
Lasers are also potentially dangerous. This project only uses a pair of Class 2 lasers, about which Wikipedia says the following:
"A Class 2 laser is safe because the blink reflex will limit the exposure to no more than 0.25 seconds. It only applies to visible-light lasers (400–700 nm). Class-2 lasers are limited to 1 mW continuous wave, or more if the emission time is less than 0.25 seconds or if the light is not spatially coherent. Intentional suppression of the blink reflex could lead to eye injury. Many laser pointers are class 2."
Never look directly into the laser beam. Never intentionally shine it into someone's eye. Never adjust its circuitry to increase its power.
The Redpointer's operation does rely on tracing someone's motion using a laser pointer. For safety reasons, always focus on point on the person's body well away from the head, such as the belt of the climbing harness. Fortunately, most rock climbing takes place with the climber facing inward towards the wall, so the chance of the climber turning to face the beam by accident is minimal. Always ask permission from climbers (or anyone else) before pointing lasers at them.
Don't be mean to cats with lasers. That sentence can be interpreted in two ways. Both hold equally true.
Rock climbing is inherently dangerous. Obviously, this danger is largely mitigated by the careful use of ropes, harnesses and other safety equipment but the danger is always present. Never go rock climbing if you are not fully competent and confident in the various techniques involved (belaying, leading, rigging, etc.).
This project involves soldering and working with electrical circuits. Always do both of these in well-ventilated, uncluttered and dry environments, using sensible precautions to avoid burns, fires and electric shocks.
Lasers are also potentially dangerous. This project only uses a pair of Class 2 lasers, about which Wikipedia says the following:
"A Class 2 laser is safe because the blink reflex will limit the exposure to no more than 0.25 seconds. It only applies to visible-light lasers (400–700 nm). Class-2 lasers are limited to 1 mW continuous wave, or more if the emission time is less than 0.25 seconds or if the light is not spatially coherent. Intentional suppression of the blink reflex could lead to eye injury. Many laser pointers are class 2."
Never look directly into the laser beam. Never intentionally shine it into someone's eye. Never adjust its circuitry to increase its power.
The Redpointer's operation does rely on tracing someone's motion using a laser pointer. For safety reasons, always focus on point on the person's body well away from the head, such as the belt of the climbing harness. Fortunately, most rock climbing takes place with the climber facing inward towards the wall, so the chance of the climber turning to face the beam by accident is minimal. Always ask permission from climbers (or anyone else) before pointing lasers at them.
Don't be mean to cats with lasers. That sentence can be interpreted in two ways. Both hold equally true.
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