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.
Once you have those two numbers, the price is then divided by how many square feet the patio will end up being. This is the most important aspect of the total cost. Depending on the overall size of the area, the project could cost upwards of $1,000-1,500, though much more if its being installed by a contractor. The most essential aspect of what the patio will cost is the type of brick that will be used for the project.