vaxus

very very very usefull post, thanks. will try it.

What kind of charging box are you using? I see you left battery connector out of the cover box.

Had anyone tried the Graphene accus that are coming now? 50 usd more but suppose to be charged in 1/10 time.see on hobbyking.com: "turnigy graphene 12000mah.."

Great project.To complete your project, do you have any suggestion on charging device for such big battery?

voted, good luck!!!

Great one.Have you done total calculation of the price ? Was it worth it ?Have fun... I will build one...

amazing work!!! you are genious!!! good luck with improvements, will follow your posts

HELP NEEDED !!!while running Wake Word Agent, problem with sound card (microphone).... added a usual small USB one.still have an error returned and cant find any config file or C code definition of that------------------------------------------------pi@raspberrypi:~/Desktop/alexa-avs-sample-app/samples/wakeWordAgent/src $ ./wakeWordAgent -e kitt_aiINFO:main: Starting Wake Word AgentINFO:WakeWordAgent: State set to IDLE(2)ALSA lib confmisc.c:1286:(snd_func_refer) Unable to find definition 'cards.bcm2835.pcm.front.0:CARD=0'ALSA lib conf.c:4259:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directoryALSA lib conf.c:4738:(snd_config_expand) Evaluate error: No such file or directoryALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM frontALSA lib pcm.c:223...

HELP NEEDED !!!while running Wake Word Agent, problem with sound card (microphone).... added a usual small USB one.still have an error returned and cant find any config file or C code definition of that------------------------------------------------pi@raspberrypi:~/Desktop/alexa-avs-sample-app/samples/wakeWordAgent/src $ ./wakeWordAgent -e kitt_aiINFO:main: Starting Wake Word AgentINFO:WakeWordAgent: State set to IDLE(2)ALSA lib confmisc.c:1286:(snd_func_refer) Unable to find definition 'cards.bcm2835.pcm.front.0:CARD=0'ALSA lib conf.c:4259:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directoryALSA lib conf.c:4738:(snd_config_expand) Evaluate error: No such file or directoryALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM frontALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rearALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfeALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.sideALSA lib confmisc.c:1286:(snd_func_refer) Unable to find definition 'cards.bcm2835.pcm.surround51.0:CARD=0'ALSA lib conf.c:4259:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory

I would like to try using Bluetooth speaker and microphone for the Echo in/out.Is there configuration where I can specify which audio device to be used?During setup phase only option to use AV/HDMI as audio out.Thanks, awesome instructable.

there is another sensor for AC current also up to 30 A. It is called ACS712 also at 1.8$ on ebay

any solution for trapezie change (at least vertical)?

Amazing project !!! I can only immagine amount of trials and packages received and sent back :-)You are the only one who does it with LED, all DLP projectors are still with normal lamps. Can you tell the brightness in Lumens ? My projector is BenQ TH693 with 210 W lamp has 3200 Lumens.

you better buy all that on EBAY.... it will make 1/4 of the total price, believe me, I do so (example, Arduino board - <= 4 dollars)

Great instructable!!! I loved it most for details, because other instructable same art are missing bits-and-bytes.I found same laser on ebay.com for 60 USD only, so will go for aliexpress soon (11 Nov is on sale for 30 usd instead of 40 usd)

I have not done it, but definitelly possible with delay() command. Or another possibility, I red somewhere that you can programmatically make reset of the board by connecting reset button to a digital output. So you can reset the board (hard-core sleep) so it will consume less energy. You should search for that solution.

Oooo, thanks. I found that Adafruit's board. .... BUT, It is so expensive (17 usd direct or 30 euro on Amazon.de) !!!!I rather consider to take a ready accu+integrated solar panel for 15 euro, available also in outdoor waterproof package.Have you considered that ?

any details on the board ? name ? thanks.

Great Instructable!!! Worked from the first shoot!!! Thanks a lot.Notes: I did not manage to connect with the "server name" in local network, but worked fine with IP address. Need to assign a fix IP and already have access to it from external network over port-forwarding setup on router.p.s. next step is to add a timestamp into the webpage... working on that myself with module DS1302)

Thanks a lot!!! I followed instructions and had a great experience with my first IoT project.Unfortunatelly it did not work as-is, while:1. I used the only DHT11 sensor and no other - script was not working at runtime2. some libraries were not loadable as per instuction, needed to play aroundOverall was original Instructables are great!!!I posted my personal Instructables with missing (or corrected) steps, tested with 2 boards (ESP12E DEVKIT V2, NodeMCU AMICA)You can find mine here:http://instructables.com/id/Easy-IoT-Weather-Station-With-Multiple-Sensors-enc

Interesting!!! Did you build also charging of the accu with solar panel? I am very interested in that!!!

I followed instructions. It was a great experience and it worked at the end.I had to make some tricks and adjustments to the code...1. downloading in Arduino IDE the board, than selected "NodeMCU V0.9"the same board did worked well also when board "NodeMCU V1.0" was selected. I did test with 2 boards:a) ESP12E DEVKIT V2 (www.doit.am) (baud rate 115200)b) NodeMCU AMICA www.nodemcu.com (baud rate 115200, despite on board written "use 9600")2. the module ESP8622WiFi is not downloaded automatically with the board, I downloaded it myself and to put into library/ESP8622WiFi (found here https://github.com/ekstrand/ESP8266wifi/archive/ma... and read READ.ME file inside)3. need to download other sensor libraries for Adafruit_Sensor - library Adafruit Sensor Un...

I followed instructions. It was a great experience and it worked at the end.I had to make some tricks and adjustments to the code...1. downloading in Arduino IDE the board, than selected "NodeMCU V0.9"the same board did worked well also when board "NodeMCU V1.0" was selected. I did test with 2 boards:a) ESP12E DEVKIT V2 (www.doit.am) (baud rate 115200)b) NodeMCU AMICA www.nodemcu.com (baud rate 115200, despite on board written "use 9600")2. the module ESP8622WiFi is not downloaded automatically with the board, I downloaded it myself and to put into library/ESP8622WiFi (found here https://github.com/ekstrand/ESP8266wifi/archive/ma... and read READ.ME file inside)3. need to download other sensor libraries for Adafruit_Sensor - library Adafruit Sensor Unified for Adafruit_BMP085 - same library name4. I've connected only DHT11 sensor, so when started, the reading of next sensor just reseted the board. Solution - I wrote a lot of #ifdef for all sensors and than it worked.I had to adjust the script. the script is below as I do not wont to put it on gitHUB.----------------------------------------------/*This sketch is a combination of two other sketches:1.Plot DTH11 data on thingspeak.com using an ESP8266April 11 2015Author: Jeroen BeemsterWebsite: www.arduinesp.com2.Example sketch: adafruit BMP 085Sensor api BMP180*/ //#define BMP180//#define LDR//#define RAIN//library DHT11#include <DHT.h>//library esp#include <ESP8266WiFi.h>//#include <SPI.h>//#include <WiFi.h>//library bmp180#include <Wire.h>#include <Adafruit_Sensor.h>#include <Adafruit_BMP085_U.h>Adafruit_BMP085_Unified bmp = Adafruit_BMP085_Unified(10085);// replace with your channel’s thingspeak API key,String apiKey = "OO6SGJ5GFFZHXSU9"; //fill in the api key from thingspeak char* ssid = "UPC6285786"; //fill in your wifi name char* password = "NEFHFGBG"; //fill in your wifi passwordconst char* server = "api.thingspeak.com";#define DHTPIN 2 // what pin we’re connected toDHT dht(DHTPIN, DHT11,15);WiFiClient client;int sensorPin = A0; // input for LDR and rain sensorint enable1 = 15; // enable reading LDRint enable2 = 13; // enable reading Rain sensorint sensorValue1 = 0; // variable to store the value coming from sensor LDRint sensorValue2 = 0; // variable to store the value coming from sensor Rain sensor//--------------------------setup-------------------------void setup() {// declare the enable and ledPin as an OUTPUT:pinMode(enable1, OUTPUT);pinMode(enable2, OUTPUT); Serial.begin(115200);delay(10);dht.begin();WiFi.begin(ssid, password);Serial.println();Serial.println();Serial.print("Connecting to ");Serial.println(ssid);Serial.print("..........");Serial.println();WiFi.begin(ssid, password);while (WiFi.status() != WL_CONNECTED) {delay(500);}Serial.println("WiFi connected");Serial.println();}void loop() {//--------------------------DHT11/DHT11-------------------------float h = dht.readHumidity();float t = dht.readTemperature();if (isnan(h) || isnan(t)) {Serial.println("Failed to read from DHT sensor!");delay(5000);return;}Serial.print("Temperature: ");Serial.print(t);Serial.print(" degrees Celcius ");Serial.println();Serial.print("Humidity: ");Serial.print(h);Serial.print("%");Serial.println();//--- extra---- you can measure dew point with the temperature and the humiditydouble gamma = log(h/100.0) + ((17.62*t) / (243.5+t));double dp = 243.5*gamma / (17.62-gamma);Serial.print("Dew point: ");Serial.print(dp);Serial.print(" degrees Celcius ");Serial.println();//--------------------------BMP180------------------------#ifdef BMP180if(!bmp.begin()) {Serial.print("Failed to read from BMP sensor!!");while(1);}sensors_event_t event;bmp.getEvent(&event);Serial.print("Pressure: ");Serial.print(event.pressure);Serial.println(" hPa");float temperature;bmp.getTemperature(&temperature);Serial.print("Temperature: ");Serial.print(temperature);Serial.println(" degrees Celcius ");//--- extra----you can measure the altitude with the temperature and the air pressurefloat seaLevelPressure = 1015;Serial.print("Altitude: "); Serial.print(bmp.pressureToAltitude(seaLevelPressure,event.pressure)); Serial.println(" m");#endif // BMP180//--------------------------LDR-------------------------#ifdef LDR digitalWrite(enable1, HIGH); sensorValue1 = analogRead(sensorPin);sensorValue1 = constrain(sensorValue1, 300, 850); sensorValue1 = map(sensorValue1, 300, 850, 0, 1023); Serial.print("Light intensity: ");Serial.println(sensorValue1);digitalWrite(enable1, LOW);delay(100);#endif // LDR//--------------------------Rain Sensor-------------------------#ifdef RAINdigitalWrite(enable2, HIGH); delay(500);sensorValue2 = analogRead(sensorPin);sensorValue2 = constrain(sensorValue2, 150, 440); sensorValue2 = map(sensorValue2, 150, 440, 1023, 0); Serial.print("Rain value: ");Serial.println(sensorValue2);delay(100);digitalWrite(enable2, LOW);#endif // RAINSerial.println();//--------------------------thingspeak-------------------------if (client.connect(server,80)) { // "184.106.153.149" or api.thingspeak.comString postStr = apiKey;postStr +="&field1=";postStr += String(t);postStr +="&field2=";postStr += String(h);postStr +="&field3=";postStr += String(dp);#ifdef BMP180postStr +="&field4=";postStr += String(event.pressure);postStr +="&field5=";postStr += String(temperature);#endif // BMP180#ifdef LDRpostStr +="&field6=";postStr += String(sensorValue1);#endif#ifdef RAINpostStr +="&field7=";postStr += String(sensorValue2);#endif //RAIN#ifdef BMP180postStr +="&field8=";postStr += String(bmp.pressureToAltitude(seaLevelPressure,event.pressure));#endif BMP180postStr += "\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n";client.print("POST /update HTTP/1.1\n");client.print("Host: api.thingspeak.com\n");client.print("Connection: close\n");client.print("X-THINGSPEAKAPIKEY: "+apiKey+"\n");client.print("Content-Type: application/x-www-form-urlencoded\n");client.print("Content-Length: ");client.print(postStr.length());client.print("\n\n\n\n\n\n\n\n");client.print(postStr);}client.stop();// thingspeak needs minimum 15 sec delay between updatesSerial.println("Going to sleep 20 sec...");Serial.println();delay(20000);}

I was excited to read the article, wow arduino and analyzes the audio.... but unfortunatelly it is not - the name is misleading. Arduino is used just to show LED matrix. What a pity...p.s. I am considering to make a project "Arduino + audio analyzer chip". But is becomes very expensive..... I should go back to old fashion several "resistors+inductions" audio solution :-)

As some question on cheap parts arised before.I found today a complete Arduino + GRBL + 4 drivers for 18 eu + 3 eu deliverywww.amazon.de/dp/B01GL8G850

you have to be carefull with NEMA-17. Those you proposed are only 4 KG (or 2) tongue. That is very poor.Try gearbest.com, I got mine on amazon.de, seams to be good ones.Search for NEMA17 17HS5425 .... (48 N.cm) - 5 peaces for 62 euro

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