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Best Approach for Starting a Linux-Based Home Automation Pro 4 Weeks Ago by Aria James … a smart home automation system using a Linux-based Raspberry Pi setup. My background is in electronics and embedded systems, but… be best for running automation tasks smoothly on a Raspberry Pi, any recommended libraries or frameworks that make working with sensors… Re: Best Approach for Starting a Linux-Based Home Automation Pro 2 Weeks Ago by WilliamOG Great project idea, and you're already ahead with your electronics background. For the OS, Raspberry Pi OS Lite is a solid starting point—lightweight, well-supported, and ideal for headless setups. If you want something even more stripped down, check out DietPi or Ubuntu Server for Pi, but the trade-off is slightly less community support. Re: Best Approach for Starting a Linux-Based Home Automation Pro 4 Weeks Ago by trcooke Hello, I'd probably start with an open source off the shelf solution such as https://www.home-assistant.io/ There are tutorials on their site that cover installation onto a raspberry pi so you should be able to get to and running fairly quickly. It sounds like a fun project so please do let us know how you get on. Re: Best Approach for Starting a Linux-Based Home Automation Pro 3 Weeks Ago by trcooke … and had a little bash script running on a raspberry pi that polled for the temperature every now and then and… Re: Best Approach for Starting a Linux-Based Home Automation Pro 3 Weeks Ago by Dani What about using something like [IFTTT](https://ifttt.com/)? Re: Best Approach for Starting a Linux-Based Home Automation Pro 3 Weeks Ago by Dani I assume your son is no longer a baby, but nowadays you can get Nest temperature sensors to put in different areas of your home. You can officially tell Nest to control the HVAC based on the temperature of the family room during the day and the temperature of the bedroom at night, for example. Re: Best Approach for Starting a Linux-Based Home Automation Pro 3 Weeks Ago by trcooke Indeed not. He's 7 now. Yes you can get those free standing mounts, but I don't have any. My thermostats are wired into the wall. It'd be cool if you could just pop them off the wall and stick them on a stand anywhere you like, but alas you cannot. Re: Best Approach for Starting a Linux-Based Home Automation Pro 3 Weeks Ago by Dani Huh? I'm referring to [these](https://www.amazon.com/Google-Nest-Temperature-Sensor-Pack/dp/B0D5J7G9J2/ref=asc_df_B0D5J7G9J2?mcid=eae5a49f4a903a8db2d8e80887222083&hvocijid=7880327826579386076-B0D5J7G9J2-&hvexpln=73&tag=hyprod-20&linkCode=df0&hvadid=721245378154&hvpos=&hvnetw=g&hvrand=7880327826579386076&hvpone=&… Re: Best Approach for Starting a Linux-Based Home Automation Pro 3 Weeks Ago by trcooke Oh I have not seen those before... interesting. I was thinking of this ![OIP-1295676706.jpeg](https://static.daniweb.com/attachments/5/fe66dbe7780e9db85275b9e50313a159.jpeg) Re: Best Approach for Starting a Linux-Based Home Automation Pro 3 Weeks Ago by trcooke Apparently not available in the UK. Although Amazon UK are selling them and there are lots of angry reviews left. Re: Best Approach for Starting a Linux-Based Home Automation Pro 3 Weeks Ago by Dani How can you bear to live in such an uncivilized country?! Re: Best Approach for Starting a Linux-Based Home Automation Pro 3 Weeks Ago by Dani P.S. Here in the US, our Nests are directly connected to the HVAC system hardwired in the wall, so they aren’t movable at all. Re: Is linux your daily driver? 2 Months Ago by Reverend Jim I've tried loinux several times over the years on spare computers, virtual machines, and a Raspberry Pi. I gave up on all of them because it was too difficult to maintain. Now all I use it for is Live USB recovery tools. Pi ! 17 Years Ago by skatamatic I've recently made a pi calculator out of a pretty rediculous algorithm (which is incredible …; setprecision(16) << fixed << dPi; dAccuracy = ((dPi / PI) * 100); cout << "\nApproximate Accuracy: " <<… pi 11 Years Ago by laleh.97  We estimate pi.  We assume as in Figure 10 is a side of … your account.  This ratio is equal to one-fourth of pi.  Find a way to write the function to determine the… Re: pi 11 Years Ago by Banfa … points in a quadrant of a circle from 0.785398(PI/4) to 0.570248 when you only consider integer points… suggests this isn't a terribly good method to approximate PI. Using 10500+ random points the result of the formula when… Re: Pi Approximation with Taylor Series 12 Years Ago by Lucaci Andrew …`'.'`). cout.precision(20); cout<<"pi"<<"["<<i<… like this: /* * Output */ This program approximates pi using an n-term series expansion. Enter the value of…series expansion. Enter the value of n>15 pi[15] = 3.2081856522619416339 Also, I let myself… Pi Approximation with Taylor Series 12 Years Ago by lwarshaw19 …= 2.97604617604617560644 Sample Run 4: This program approximates pi using an n-term series expansion. Enter the value…cmath> using namespace std; int main () { double pi = 0; double i; int n; cout<<"…;This program approximates pi using an n-term series expansion."<… Re: Pi Approximation 14 Years Ago by loga88 …> => 3 > Approximation value of pi is 3.466667. #include <iostream> #…using namespace std; int main() { double pi = 0; // Calculating pi/4 int elements; cout<<"…2*n-1); } // Calculating pi pi *= 4; cout<<"Estimated PI value (" << … Re: Pi Approximation 21 Years Ago by BountyX …<math.h> int main() { double pi = 0; // Calculating pi/4 int elements = 2000; for (long int n…)/(2*n-1); } // Calculating pi pi *= 4; cout << "Estimated PI value (" << elements…<< " elements): "<< pi; return 0; } As you can see I left some… Re: Pi Approximation 21 Years Ago by essentialc++33 …gt; int main() > { > double pi = 0; // Calculating pi/4 > int elements = 2000; >…1; n <= elements; n++) > { > pi += (double) pow(-1, n+1)/(2*n-1); >…; } > // Calculating pi > pi *= 4; > cout << "Estimated PI value (" <<… Re: Pi Approximation with Taylor Series 12 Years Ago by vijayan121 …need the expensive and approximate `std::pow()`. Something like this: // pi = 4 * ( 1 - 1/3 + 1/5 - … 1/9 - 1/11 + ... ) int sign = +1 ; double pi = 0.0 ; constexpr int n = 1000000 ; for( int i =… 0 ; i < n ; ++i ) { pi += sign * 4.0 / ( i*2 + 1 ) ; sign = -sign ;… Pi to many decimal places 14 Years Ago by penguino138 Ok so i want to make a program that calculates pi. Ive done that already but it only gives me so ….h> #include <math.h> int main() { double pi = 0; int elements; cout << "How many???"…) pow(-1, n+1)/(2*n-1); } pi *= 4; cout << "Estimated PI value (" << elements <<… Re: Pi Approximation with Taylor Series 12 Years Ago by lwarshaw19 My output looks like this: Enter the value of n>3 pi[3] = 12 For any number I put as the value of n... it gives me the answer 12.. just confused as to what I'm doing wrong.. My output should also show the terms used .. like if my n (number of terms) was 3.. then it should show: `pi[3] = 4[1 - 1/3 + 1/5] = (my answer)` Re: Pi Approximation with Taylor Series 12 Years Ago by iamthwee … getting the answer 12. If you comment out the line `pi *=4;` you should get a value such as 3.14… you get. for (double n = 1; n <= i; n++) { pi += (double) pow(-1.0, n+1)*(4/(2*n-1… Re: Pi Approximation with Taylor Series 12 Years Ago by iamthwee >For any number I put as the value of n... it gives me the answer 12.. A healthy adding of couts at strategic places could help your cause. >My output should also show the terms used .. like if my n (number of terms) was 3.. then it should show: pi[3] = 4[1 - 1/3 + 1/5] = (my answer) This could be solved by using cout in your `for` loop Re: Pi Approximation with Taylor Series 12 Years Ago by iamthwee Additionally why are you doing this `pi *= 4;` when you are already multiplying by four in the for loop? Re: Pi Approximation with Taylor Series 11 Years Ago by p s suvin whats the series expansion of pi power4 divided by 180 Pi Approximation 21 Years Ago by essentialc++33 … be determined by the series equation PI=4x(1-1/3+1/5-1/… manu terms of series equation to use in approximating PI. Then calculate and display the approximation. Here is… a sample run: PI Approximation Program How many terms of the series should… the approximation) => 3 Approximation value of pi is 3.466667. Re: Pi Approximation 21 Years Ago by essentialc++33 …{ [/size][size=2][color=#0000ff]double[/color][/size][size=2] pi =3.14159265358979323846; [/size][size=2][color=#008000]//approximate value of… many terms of the series equation to use in approximating pi"<< endl; cin >> enter …terms; cout << "approximate value of pi is"<< endl; return 0; } I don…