Differences
This shows you the differences between two versions of the page.
| Next revision | Previous revision | ||
|
weatherbox:dragonfruit:meeting_minutes_january_27_2017 [2017/01/25 06:46] tyamauchi created |
weatherbox:dragonfruit:meeting_minutes_january_27_2017 [2021/09/19 21:59] (current) |
||
|---|---|---|---|
| Line 1: | Line 1: | ||
| - | =====Dragonfruit Team Meeting - January 17th, 2016===== | + | =====Dragonfruit Team Meeting - January 27th, 2017===== |
| Attended: Kevin, Gordon, Tyler | Attended: Kevin, Gordon, Tyler | ||
| ==== Updates ==== | ==== Updates ==== | ||
| - | * Strangely, board 3 from last year works and transmits perfectly fine | + | * Transmission Test 1 |
| - | * possibly b/c it has not been powered on in a while | + | * Board lasted for 17 hours |
| - | * This board was showing major transmission issues last year | + | * Battery voltage was last recorded as 3.7V therefore unsure why board stopped transmitting |
| - | * ==Try putting screws into through holes== | + | * could be due to Ghost voltage or marginal short |
| - | * Dylan wrote an arduino code to measure XBee voltage (watch for ghost voltage) | + | * Could also be due to Gateway crashing |
| - | * Currently doing a life time test of board | + | * After power cycling board, the board powered on and started transmitting |
| - | * will move on to doing life time tests while housed and with solar panel | + | |
| + | * Transmission Test 2 | ||
| + | * Board lasted for 56.3 hours | ||
| + | * Battery voltage was last recorded as 3.0V meaning the battery discharged before ending transmission | ||
| + | * HOWEVER, once power cycled the board was able to send heartbeat packets | ||
| + | |||
| + | * Dylan helped create a code for Arduino that would help us monitor if our XBee experienced a ghost voltage | ||
| + | * This code will record voltages and notify when a voltage is greater than 3.3V | ||
| + | * Having a voltage greater than 3.3V means that something other than the Voltage regulator is powering the XBee | ||
| + | * currently we have no way of writing this data to a file | ||
| + | * Contacted Tyrin about 3D printing the rest of housing | ||
| + | * Testing board again with all sensors attached, and screwed into the housing | ||
| + | * Kevin working on Gantt Chart | ||
| + | * Gordon bringing together all necessary parts to populate another board (getting familiar with all the parts of DragonFruit) | ||
| ==== Problems ==== | ==== Problems ==== | ||
| - | * The board works fine, and we didn't do anything | + | * There is currently a bizarre lack of problems |
| ==== Goals ==== | ==== Goals ==== | ||
| - | * Test XBee transmission when in contact with metal and without | + | * Deploy board |
| - | * Reprint housing bottom and Solar Panel holders (put holes in the screw places) | + | * Program board 4 and 5 |
| - | * Use diode to avoid power from XBee | + | * use these boards for testing |
| - | * Find an appropriate diode | + | * Complete redesign of new board |
| - | * Find out where MCU could be powering the XBee from | + | * no parallel voltage planes surrounding charging chip if possible |
| - | * Program Dragonfruit board 5 | + | * new GPS and RTC components |
| - | * Measure for shorts | + | |
| - | * Oscilloscope | + | |
| - | * Talk to Ohta about possible plane tunneling issues | + | |
| - | * Figure out if repeated use damages/degrades the performance of the board | + | |
| - | * Test board after replacing Charging Chip | + | |
| - | * Find surface mount charging chip part (redesign board to use this part, may solve shorting issues) | + | |
| - | * Finalize Eagle schematics of GPS and RTC | + | |
| | | ||