Differences

This shows you the differences between two versions of the page.

--- introduction_to_the_internet_of_things [2018/07/11 20:01] – sdh7
+++ introduction_to_the_internet_of_things [2018/07/31 23:32] – sdh7
@@ Line 7: / Line 7: @@
 Install Arduino IDE if you don't already have it, and upgrade to something recent if you're below version 1.7 - http://arduino.cc
   * In Boards Manager, add ESP8266 Board support
+  * FIXME: This is missing steps
 Set up a Cayenne account - https://cayenne.mydevices.com
+  * FIXME: document getting MQTT connect info
 Install the following libraries:
   * Cayenne MQTT Library - https://github.com/myDevicesIoT/Cayenne-MQTT-Arduino
-  * Adafruit Sensor Library
+  * Adafruit Sensor Library - FIXME: URL
-  * Adafruit BME280 library
+  * Adafruit BME280 library - FIXME: URL
   * Arduino SimpleTimer library https://github.com/marcelloromani/Arduino-SimpleTimer
@@ Line 19: / Line 21: @@
   * on OS X, navigate using the finder or otherwise cd ~/Documents/Arduino/libraries/Adafruit_BME280_Library-master/
     * On Windows & Linux the files will be somewhere similar.
-  * edit Adafruit_BME280.h using your favorite editor- change #define BME280_ADDRESS from 0x77 to 0x76
+  * edit Adafruit_BME280.h using your favorite editor, and change #define BME280_ADDRESS from 0x77 to 0x76
-  * more advanced C programmers may do something like:
-<code>
-#define BME280_ADDRESS 0x77
-#ifdef CLASS_BME280
-#define BME280_ADDRESS 0x76
-#endif
-</code>
-and then add #define CLASS_BME280 at the beginning of your program, so that way if you get an Adafruit BME280 board in the future, it will continue to work right...
+===If Using Your Phone to Tether===
+I have not tested phone tethering- the prototype worked directly with our in-space WiFi. However, if you wish to try it, there are some instructions to be found here:
+  * [[https://www.androidcentral.com/how-set-wi-fi-hotspot-android-phone|Android setup]]
+  * [[https://support.apple.com/en-il/HT204023|iOS setup]]
 ====THINGS WE WILL DO AT THE CLASS====
@@ Line 34: / Line 32: @@
   * ESP8266 Wifi-enabled microcontroller
   * BME280 sensor array
-  * AD1117 voltage regulator
+  * AMS1117 voltage regulator
   * CH34x-based programmer for the ESP8266
 ==Hardware Construction==
   * On the programming board, wire an SPST or SPDT switch between GPIO and GND
-  * If you plan on re-using the boards for something else in the future, solder in header pins on the other boards. If you're building this as a
+  * If you plan on re-using the boards for something else in the future, solder in header pins on the other boards. If you're building this as a fixed-in-place design, you'll want to just solder wires to the boards. Theoretically, the person that designed this de-solders the pins from the ESP8266 board, but that seems foolhardy to me (makes it MUCH more difficult to reprogram...)
+  * wiring:
-If you want to re-use the component boards for other projects, solder pins into the BME280/Voltage regulator boards.
+    * ESP8266->BME280: GND->GND, IO2->SCL, IO0->SDA,3V3->VCC
+    * AMS1117->ESP8266: GND->GND, VOUT->3V3
+    * Note that the 3.3V & GND connections are going to multiple places.
+==Software Programming==
+This is the stock program for the class, with some minor edits to account for our BME280 header hack above.
-==Software Programming==
 <code>
 #define CAYENNE_PRINT Serial  // Comment this out to disable prints and save space
@@ Line 114: / Line 115: @@
 **Power considerations**
-The kit does not come with a power source. The regulator board requires at least 4.5V (and at most 15V!) to adequately supply 3.3V to the ESP8266 and BME280 boards. A 9V battery or 6V AA case should work. You should be able to power via USB with the serial board as well- just run wires from 3.3v & ground to the appropriate ESP8266 pins.
+The kit does not come with a power source. The regulator board requires at least 4.5V (and at most 15V!) to adequately supply 3.3V to the ESP8266 and BME280 boards. A 9V battery or 6V AA case should work. You should be able to power via USB with the serial board as well- just run wires from 3.3v & ground to the appropriate ESP8266 pins and leave out the AMS1117.