- Getting ready for first Senior Project class<\/li>
- Solar panel charging an issue a non issue<\/li>
- LoRa vs 3G vs narrowband
- LoRa might not be powerful enough<\/li>
- 3G might be expensive
- As little as $8<\/li><\/ul><\/li><\/ul><\/li>
- Who\u2019s in charge of what task:
- Zach
- Embedded system data collection and database upload<\/li><\/ul><\/li>
- Adam
- Hardware elements: sensors, PCB, circuitry<\/li><\/ul><\/li>
- Matt
- Database setup and website backend<\/li><\/ul><\/li>
- Jake
- Website frontend and integration<\/li><\/ul><\/li><\/ul><\/li>
- Requirements by end of semester:
- Working hardware
- Working parts but not all integration<\/li><\/ul><\/li>
- Report<\/li><\/ul><\/li>
- \u201cMake things as simple as possible and no simpler\u201d<\/li><\/ul>\n\n\n\n
9\/6\/19<\/h2>\n\n\n\n
- Need to construct a type of base for hives to sit on.<\/li>
- Preliminary ideas:
- Angle iron with plates on the corners and cross beams<\/li>
- Load cell feet connected to plywood base feet<\/li>
- Build in CAD and bring to Joe Zanetti
- Aluminum vs Steel?<\/li><\/ul><\/li><\/ul><\/li>
- Research options for different embedding system
- PsoC<\/li>
- Raspberry Pi<\/li>
- Arduino
- Dr. P doesn\u2019t recommend unless we make our own like Warren\u2019s group did<\/li><\/ul><\/li><\/ul><\/li><\/ul>\n\n\n\n
9\/16\/19<\/h2>\n\n\n\n
- Meeting with Joe
- Joe has no issues with cutting anything<\/li>
- Has a few recommendations on what kind of steel to use<\/li>
- Bring detailed designs of specific parts back to joe for sign off before construction<\/li><\/ul><\/li>
- Got temp\/humidity to work with raspberry pi<\/li>
- Ordered an adc bc raspberry pi doesn\u2019t have one<\/li>
- Discussion about which op amps to get<\/li>
- Using nb iot\/lte
- Possibly using the pyCom instead of the pi<\/li>
- Create a table to decide which is the best to use (not just cause cost)
- Come up with final decision<\/li><\/ul><\/li><\/ul><\/li><\/ul>\n\n\n\n
9\/23\/19<\/h2>\n\n\n\n
- Another meeting with Joe
- Finalized design pretty much<\/li>
- Reached out to Zach\u2019s contact to try and get the steel box tubing needed (donated hopefully)<\/li><\/ul><\/li>
- FiPy board
- Finalized our board to use (donated from Joel)<\/li>
- Decided on cat m1 over nb IoT<\/li>
- In process of getting LTE antenna from Joel<\/li>
- Sim card also in progress
- Can use our own from our phones for now<\/li><\/ul><\/li><\/ul><\/li>
- Database
- Don\u2019t need a super robust db for prototyping but we should try and keep it as scalable as possible<\/li>
- Right now:
- Using apache Kafka
- Good at using small amounts of data from a bunch of sources<\/li><\/ul><\/li>
- What’s the benefit?
- Helps scalability?<\/li><\/ul><\/li>
- Dr. P: keep it as simple as possible so maybe bypass Kafka<\/li>
- Using MongoDB <\/li>
- Looking into Pybytes (built in for pycom)<\/li><\/ul><\/li>
- Look into data caching potential
- Dr. P: Probably not really necessary<\/li><\/ul><\/li><\/ul><\/li>
- In our design: quantify how many systems to be scalable<\/strong>
- Quantify number of transactions a second to support<\/strong><\/li>
- Justify all of our choices<\/strong><\/li>
- Quantify the lifetime of a system and how much honey will be produced<\/strong>
- The honey to apis system ratio over a lifetime<\/strong><\/li><\/ul><\/li><\/ul><\/li>
- Load cell amplification
- The load cell combinator we found could be a good idea but<\/li>
- Dr. P suggests local amplification for every load cell 100\/1 gain or so
- Possibly use adc converter on every load cell and then not have to worry about degreation <\/li><\/ul><\/li><\/ul><\/li>
- P channel mosfet for switching power off to load cells from HIGH side<\/li>
- N-CHANNEL mosfet from low side (use pull down resistor so ground does not change)
- Good one to order:PMV16XN<\/li>
- Ones here at school should be fine tho
- FQP30N06L<\/li>
- From gate to ground, put a big resistor<\/li><\/ul><\/li><\/ul><\/li>
- Voltage regulator for 10V (given to load cells) down to 3.3
- Regulator is gonna get hot<\/li>
- Might wanna use DC to DC converter or buck converter<\/li><\/ul><\/li>
- Determine if we can use 5v excitation voltage for load cells<\/li>
- We will need a voltage regulator for solar panel.<\/li>
- Design a simulate things with Pspice<\/strong><\/li>
- Design a circuit for using a solar panel(even if we don’t buy them yet)<\/strong><\/li><\/ul>\n\n\n\n
9\/30\/19<\/h2>\n\n\n\n
- For small amplifier
- Proto advantage<\/li>
- Give them a part and they’ll create a \u201cproto\u201d chip to prototype it with<\/li>
- When doing pcbs, can put it right on<\/li>
- Dr. Katz\u2019 company might be able to help<\/li><\/ul><\/li>
- Second Presentation review
- Give some of our requirements in project goals(give range of sizes for pallets)<\/li><\/ul><\/li><\/ul>\n\n\n\n
![\"\"](\"https:\/\/engprojects.tcnj.edu\/apis\/wp-content\/uploads\/sites\/125\/2019\/11\/Screen-Shot-2019-11-19-at-6.23.38-PM.png\")
<\/figure>\n\n\n\n- PCB design
- Keycad<\/li>
- Eagle<\/li>
- Digikey scheme it<\/li><\/ul><\/li>
- Nmosfet switching circuit:<\/li><\/ul>\n\n\n\n
![\"\"](\"https:\/\/engprojects.tcnj.edu\/apis\/wp-content\/uploads\/sites\/125\/2019\/11\/Screen-Shot-2019-11-19-at-6.17.12-PM.png\")
<\/figure>\n\n\n\n10\/21\/19<\/h2>\n\n\n\n
LTE modem issues<\/p>\n\n\n\n
- Can connect to microcontroller but cant connect to LTE anymore
- Run out of data?<\/li>
- Antenna?<\/li>
- Lte modem just dead?<\/li>
- Try other board from Joel<\/li><\/ul><\/li><\/ul>\n\n\n\n
PCB<\/p>\n\n\n\n
- Start creating the bones<\/li>
- Build around what we think we’re gonna create on the breadboard<\/li><\/ul>\n\n\n\n
Solar panel and battery<\/p>\n\n\n\n
- Voltage regulator between solar panel and battery
- Keep the solar voltage around 5V<\/li>
- Low Dropout regulator<\/li><\/ul><\/li>
- Solar panel goes up to peak 6.5V but battery works with 5-6V<\/li><\/ul>\n\n\n\n
Website<\/p>\n\n\n\n
- Have general overview<\/li>
- Steps are in place to finish by the end of the semester<\/li><\/ul>\n\n\n\n
Backend and AWS<\/p>\n\n\n\n
- Interfaced pybytes with Amazon to an extent<\/li>
- Working towards connecting to mongoDB to decide which is better<\/li><\/ul>\n\n\n\n
11\/4\/19<\/h2>\n\n\n\n
Completed Tasks:<\/p>\n\n\n\n
- Link Database with Heroku listener.<\/li>
- Built REST based compatibility for FiPy to send data via HTTP requests.
- Functionality for data to automatically be queried in database<\/li><\/ol><\/li>
- Created login page and visualization of data for front end web app.<\/li>
- Began Eagle PCB.<\/li><\/ol>\n\n\n\n
ToDo:<\/p>\n\n\n\n
- Debug i2c for temp\/humidity sensor<\/li>
- Pick up metal.<\/li>
- Send PCB for fabrication.<\/li><\/ol>\n\n\n\n
<\/p>\n\n\n\n
<\/p>\n\n\n\n
For Presentation:<\/p>\n\n\n\n
- Have all completed parts seperately<\/li>
- Have printed pcb (doesn\u2019t have to be all hooked up)<\/li>
- \u201cDesign complete\u201d
- Have all the software in place<\/li>
- Have all the hardware in place
- Does Not have to be debugged<\/li><\/ul><\/li><\/ul><\/li>
- \u201cEverything has to be in place\u201d<\/li><\/ul>\n\n\n\n
Final Report:<\/p>\n\n\n\n
- Requirements<\/li>
- Specifications<\/li>
- Use built in table of contents and stuff<\/li><\/ol>\n\n\n\n
Given a final report example to go off<\/p>\n\n\n\n
11\/11\/19<\/h2>\n\n\n\n
- LTE not working again
- Hologram originally used Verizon but not its using AT&T for some reason<\/li>
- AT&T doesn\u2019t support the FiPy<\/li>
- Trying to figure out how to correct it<\/li><\/ul><\/li>
- Adam PCB
- microUSB airwires aren\u2019t routing for some reason<\/li>
- Voltage and ground<\/li>
- Look into mini usb instead of using microUSB
- already have mini usb through hole part<\/li><\/ul><\/li>
- Need to add capacitors between all VCC and ground<\/li><\/ul><\/li><\/ul>\n\n\n\n
MINi usb through hole molex WM17115-ND
Oshpark is good for small PCB boards<\/p>\n\n\n\n1\/29\/20<\/h2>\n\n\n\n
Dr. Pearlstein Question to think about: if we get systems up and running, how long are we gonna be able to keep data? Would it be feasible to store data for something like 10 years?<\/p>\n\n\n\n
Go over our website with Dr. Pearlstein<\/p>\n\n\n\n
Goals for next week:
<\/p>\n\n\n\n- All
- Presentation next week for ELC 496.<\/li><\/ul><\/li>
- Jake
- Update website with missing notes<\/li><\/ul><\/li>
- Jake and Matt
- Sit down and meet about how the website and database will communicate<\/li>
- Create some system level block diagrams about how everything will work<\/li><\/ul><\/li>
- Adam
- Assemble, Test, and debug the PCB that has been made. See if it is working as intended or whether we need to redesign<\/li><\/ul><\/li><\/ul>\n\n\n\n
<\/p>\n\n\n\n
TCF Saturday March 21st<\/p>\n\n\n\n
- Need to create a poster by then<\/li><\/ul>\n","protected":false},"excerpt":{"rendered":"
Weekly meetings are conducted between the group members and the advisor, Dr. Pearlstein. The meeting minutes are shown below 8\/26\/19 Getting ready for first Senior Project class Solar panel charging an issue a non issue LoRa vs 3G vs narrowband LoRa might not be powerful enough 3G might be expensive As little as $8 Who\u2019s … Continue reading Meeting notes<\/span>
- Need to create a poster by then<\/li><\/ul>\n","protected":false},"excerpt":{"rendered":"
- Assemble, Test, and debug the PCB that has been made. See if it is working as intended or whether we need to redesign<\/li><\/ul><\/li><\/ul>\n\n\n\n
- All
- LTE not working again
- Voltage regulator between solar panel and battery
- Can connect to microcontroller but cant connect to LTE anymore
- PCB design
- Give some of our requirements in project goals(give range of sizes for pallets)<\/li><\/ul><\/li><\/ul>\n\n\n\n
- Design a circuit for using a solar panel(even if we don’t buy them yet)<\/strong><\/li><\/ul>\n\n\n\n
- Load cell amplification
- Justify all of our choices<\/strong><\/li>
- Quantify number of transactions a second to support<\/strong><\/li>
- Using apache Kafka
- Another meeting with Joe
- Come up with final decision<\/li><\/ul><\/li><\/ul><\/li><\/ul>\n\n\n\n
- Meeting with Joe
- Dr. P doesn\u2019t recommend unless we make our own like Warren\u2019s group did<\/li><\/ul><\/li><\/ul><\/li><\/ul>\n\n\n\n
- Working hardware
- Zach