Development Log

[SurinJo]

[DD-MM-YYYY] [Development Log in detail]

[nionu0430]

[03-09-2019] Project Start

• Surin Jo , Jaemin Nam
• Make 3 team rules, team name (Waggles)

[nionu0430]

[04-09-2019] Set the goal

• Constant operation of Waggle sensor 24/7

[nionu0430]

[05-09-2019] New member!!!

• Minju Kang

INA219

• Test INA219 sensor(voltage sensor) in raspberry pi

[nionu0430]

[06-09-2019] Study about project

• Read and interpret previous team’s paper

[ghost]

[09-09-2019] Testing thermal sensor ‘AM2302’

[ghost]

[10-09-2019]

1. Calculating voltage needed to charge single lead-acid battery
2. Designing a way to fetch current, voltage and power data from circuit while the battery is being charged by solar panel using current sensor
3. Connecting battery to bread board using relay module

[ghost]

[11-09-2019] Solar panel experiment

• circuit integration including solar panel connected to battery in order to charge it.
• installation of solar-circuit outside KSQ to check battery charging rate for 24 hours.

[ghost]

[12-09-2019] Installation of modules and sensors

• Addition of heating module, fan and thermal sensor to. Circuit with application of relay module

[ghost]

[13-09-2019] Study for development of battery pack

• study on battery pack structure considering efficient maintenance of temperature and humidity
• study on relay module

[SurinJo]

[16-09-2019] Design the battery pack's structure

• previous team had probelm with water
• suggest design to prof.Eric and Kar Ee
• advice : put fan on the "bottom"

[SurinJo]

[17-09-2019] Circuit integration

• struggle to be familiar with "Relay module"
• Burn the heating board!!

[SurinJo]

[18-09-2019] Wind power energy generator

• break the windmill while testing battery about wind power

[SurinJo]

[19-09-2019] Build a "prototype code"

• control fan and heating board based on temperature

[SurinJo]

[23-09-2019] Start to record "development log" :)

[ghost]

[24-09-2019] Get advices from Eric & Kar Ee

• Advices
  1. When you place the fan on top, without any hole, heat can not be released > malfunction
  2. But if you place any hole at the top of the battery pack, rain and insects may get in.
  3. Fan at the bottom is enough to release heat inside the battery pack
  4. One battery SHOULD provide sufficient amount of energy to run the whole circuit > Do the same experiment with Eric and Kar Ee’s supervision to figure out where the circuit has leakage.
  5. About removing wind turbine(Since it does not generate much power), if we can find any other ways to provide power to battery in periods like the winter seasons where sunlight is rare, it’s okay.
  6. If we fully close the battery pack, cooler will take up too much wattage.

[ghost]

[25-09-2019] Study on circuits

• Question about current sensor 'INA219' problem; Current Overflow
• Restructure circuit > confirm it by asking professor Eric
• Restructure battery pack with given advices
• Research on insulating materials
• Study how to read module/sensor's schematic

[ghost]

[26-09-2019] Complete this week’s task

• Question Eric about finalized battery pack structure
• Figurate battery pack structure and get materials ready

Questions

• Motor based slider: Will it efficiently(Heating induction takes power up to 120W) make the battery box warmer(compared to outside temperature)?
• Donut like structure covered with insulating materials
• Structure with vacant space that has only the slider
• Any recommendations on insulation materials?
• Solution to INA219 problems - current overflow

[ghost]

[27-09-2019] Start making battery pack prototypes

• Visit Home Depot to buy battery box (30 x 30 cm 2pcs, 20 x 20 2pcs)
• Arrange items such as sensors, battery, raspberry pi to its place and have it fixed

[SurinJo]

[30-09-2019]

1. Decide Battery Monitor system

   • Use 3 states (Good, Normal, Bad)
   • Using INA219 only for monitor the voltage

2. Practice cut the box

[ghost]

[01-10-2019]

• Connect Raspberry Pi with Arduino to use its voltage sensor
• Have a battery box with solar panel and fan installed outside to check data
• Create battery box prototype using styrofoam spray and dremel

[ghost]

[02-10-2019]

• Analyze data collected from raspberry pi for 2019.10.01 4pm - 2019.10.02 10pm.
• Write testing code that controls fan and collects voltage, humidity, temperature, time data
• Test 2 battery box(existing box & prototype box with styrofoam) in exactly same environment (Must subtract 1.4V from collected voltage data from battery box with DHT11 Sensor)

[ghost]

[03-10-2019]

• Attend a Fire Starter class
• Visit Corn maze

[ghost]

[04-10-2019]

• ask paper subject to Kar Ee
• Finally, know how to use INA219 (It was device fault..)

[ghost]

[09-10-2019]

• Complete full INA219 circuit using resistor with supervision from Kar Ee
• Battery pack prototype's structure efficiency experiment using fridge

[ghost]

[10-10-2019]

• Study motors in order to fully close the battery pack
• Create graph from csv-form data collected from yesterday's experiment
• Battery pack prototype's structure efficiency experiment OUTSIDE (Temperature; 18-26 degree)
• Find ways to prevent dew condensation
  1. Reduce temperature difference slowly by heating the battery pack consistently
  2. Add a moisture-proof layer in the battery pack

[ghost]

[11-10-2019]

• Prototype test with integrated circuit(Fan, Heating Module, Sensors)
• Collect data from yesterday's experiment and analyze

[SurinJo]

[13-10-2019]

• can't access to Waggle Stack main board(Wagman)
• root, odroid ... doesnt work
• different with https://github.com/waggle-sensor/waggle/blob/master/user_documentation/SSH_connection.md

[ghost]

[14-10-2019]

• Attend a Fire Starter class
• Collect weekend's experiment data - battery failed
• Find ways to install wind turbine outside
• Plan to write papers - asked Eric for advices
• Plan for tomorrows lab work

[SurinJo]

[15-10-2019]

• Meeting with Prof.Eric about our project subject

• Decide a comparative test method !!

• Still thinking about which conference we will submit between I2MTC and IRC

• TODO until tomorrow

• [ ] Find paper which will be listed on reference.