So, just make sure you have node and node-gyp as well as the Broadcom library to build the project. 1  Download BCM2835 library and follow installation instructions. 2  In case, you don't have node-gyp, install it first: $ sudo npm install node-gyp -g. 3  Generate the configuration files. $ node-gyp configure.  Build the component. $ node-gyp build.
Cost to Install Cement Patio. While the cost of installing a cement patio can range from $5 to $11 per square foot, the average cost for the typical cement patio installation is generally closer to $8 per square foot.
If so, you'll have to add that cost. Here are a few average costs to get you started on your estimate. As you know, none of these is the sum total of a concrete patio cost. +The average cost of stamped concrete is $9-$13 per square foot.+The average cost of installing a concrete slab is $6 - $10 per square foot. +A concrete pad is roughly $10 per square foot.Here are a few more guidelines for getting the most out of the cost of a concrete patio:The average cost of stamped concrete is $9-$13 per square foot. +The average cost of installing a concrete slab is $6 - $10 per square foot. +A concrete pad is roughly $10 per square foot. Here are a few more guidelines for getting the most out of the cost of a concrete patio: