openwaterproject / riffle_328 Goto Github PK

• Access SD card
• Access EEPROM (optional)
• Access RTC
• Blink output codes

so that protect if put battery on VUSB line

Quoting from issue posted by Greg on publiclab.org, here:

I believe I have everything which is included at the top of the .ino file (except stdlib is already installed of course):

include <JeeLib.h>
include <Wire.h>
include <SPI.h>
include <SD.h>
include <RTClib.h>
include <RTC_DS3231.h>
include<stdlib.h>

In addition I got the DHT-sensor-library which isn't referenced in the .ino but is in the riffle-ito-apps github page.

Here's what I get - seems like the RTC_DS3231 library isn't right, it's missing classes and redefining stuff...

In file included from riffle_testing.ino:6: /home/photosynq/arduino-1.0.5/libraries/RTC_DS3231/RTC_DS3231.h:88: error: redefinition of ‘class DateTime’ /home/photosynq/arduino-1.0.5/libraries/RTClib/RTClib.h:10: error: previous definition of ‘class DateTime’ riffle_testing.ino: In function ‘void setup()’: riffle_testing:100: error: ‘class RTC_DS3231’ has no member named ‘begin’ riffle_testing:102: error: ‘class RTC_DS3231’ has no member named ‘isrunning’ riffle_testing:107: error: ‘class RTC_DS3231’ has no member named ‘adjust’ riffle_testing:115: error: ‘class RTC_DS3231’ has no member named ‘adjust’ riffle_testing.ino: In function ‘void loop()’: riffle_testing:194: error: ‘class RTC_DS3231’ has no member named ‘getTempAsFloat’

https://www.adafruit.com/product/1781

One connector for general power input, one that allows for lithium battery management.

Current idea:

• Two JST connectors, one for each power input (general and lithium)
• Additional two pins for generic wiring, general power input

Datasheet: http://media.digikey.com/PDF/Data%20Sheets/Hirose%20PDFs/DM3D-SF.pdf

More drawings of it: http://www.hirose.co.jp/cataloge_hp/e60900232.pdf

Digikey: http://www.digikey.com/product-detail/en/DM3D-SF/HR1941DKR-ND/1844142

Eagle footprint (unverified, must check): https://github.com/indraastra/eagle/tree/master/libraries

Schematic in which Ben uses the part: https://github.com/bgamari/riffle/tree/fab/hardware

yes: need to know stats
no: can derive stats otherwise

It would help to organize and lay out the pinout diagrams in a more sensible way.

https://github.com/OpenWaterProject/riffle_328/blob/master/pics/medium_riffle_pinouts_detail.jpg
I don't think these labels are correct!

Also, diagrams that have the pin number as well (e.g. 3V3 = 8) are also necessary.

This will allow for applications in which the datalogger is awoken from sleep based on the RTC state.

on the top level I found the CERN licence, but the licence says "2.3. This Licence does not extend to software, firmware, or code loaded into programmable devices..."

I'm working in a project that use some code from Riffle, so I want to choose the right licence.
https://github.com/InfoAmazonia/water-sensor
https://github.com/InfoAmazonia/rede-hardware

Considerations:

• allow for easy connection to FONA board or equivalent
• allow for easy connection to temp and conductivity sensor board
• allow for easy connection to SPI and I2C
• bring out raw battery voltage for higher-voltage devices / applications

Need to find low forward voltage drop diodes

Drawing: http://portal.fciconnect.com/Comergent//fci/drawing/10118193.pdf
Digikey: http://www.digikey.com/product-detail/en/10118193-0001LF/609-4616-1-ND/2785380
MacroFab library
MacroFab Eagle footprint: MF-CON-USB-RIGHT in their library: https://github.com/MacroFab/EDALibraries/tree/master/Eagle

Note: the MacroFab part does have 'through-hole' pins, and thus should be relatively mechanically stable. It also has a 'flare out' at the edge of the part that will require a recess on the board if the part is placed on the edge of the board perpendicular to the length of the Riffle. This will simply require making careful measurements using the above drawing as a reference ... a first pass at this is shown here:

https://www.sparkfun.com/products/12711?_ga=1.123419720.257117221.1421550707

diode used:
http://www.mouser.com/ProductDetail/ON-Semiconductor/MBRA140T3G/?qs=sGAEpiMZZMtqO%252bWUGLBzeD5hzUo7yUpF

datasheet on the diode:
http://www.mouser.com/ds/2/308/MBRA140T3-D-92888.pdf

looks like datasheet on the diode indicates that the forward voltage drop should be under .4 V when above -40 C, for a 20 mA draw from the Arduino. Not sure if we'll have brownouts when larger draw (i.e. when writing to SD card or etc). Can replace diode w/ zero ohm resistor if need be.

Easy to add via SparkFun's footprint -- and will allow for turning a sealed device on and off via an external magnet ...

https://www.sparkfun.com/products/10601
https://www.sparkfun.com/products/13343?gclid=Cj0KEQiAv5-zBRCAzfWGu-2jo70BEiQAj_F8oOruuqXdKK-6-gTWl6RSFn78Wv4c8HTu6GndOrYQ3ZEaAiDj8P8HAQ

Which will allow for wider range of battery input voltages. As long as the quiescent power is reasonable.