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weatherbox:dragonfruit:meeting_minutes_january_27_2017 [2017/01/28 03:54] tyamauchi |
weatherbox:dragonfruit:meeting_minutes_january_27_2017 [2021/09/19 21:59] (current) |
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| - | =====Dragonfruit Team Meeting - January 27th, 2016===== | + | =====Dragonfruit Team Meeting - January 27th, 2017===== |
| Attended: Kevin, Gordon, Tyler | Attended: Kevin, Gordon, Tyler | ||
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| * HOWEVER, once power cycled the board was able to send heartbeat packets | * 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 | |
| - | One other thing that i thought was odd was that i could power cycle the board, and it started working again. It would transmit and send heartbeat packets. This to me screams that we had another marginal short, because whenever the shorting happens, we find that the board still gets powered but stops transmitting. This would explain why the board could get power cycled and work, but the voltage was very low. the battery continued to drain even though the board stopped transmitting. | + | * currently we have no way of writing this data to a file |
| - | + | * Contacted Tyrin about 3D printing the rest of housing | |
| - | I am currently doing another test with a full battery. this time I'm testing how long it will last with a solar panel and irradiance sensor attached this time. | + | * Testing board again with all sensors attached, and screwed into the housing |
| - | + | * Kevin working on Gantt Chart | |
| - | I also talked to tryston and he's thinking we should just redesign the board already. | + | * Gordon bringing together all necessary parts to populate another board (getting familiar with all the parts of DragonFruit) |
| - | + | ||
| - | I believe all our problems are because of the charging chip, so figuring out a way to power the board without using the planes might work. | + | |
| - | + | ||
| - | Im gonna ask Gordon to see if he can make sure we have the required parts to populate another board. I will help you. But for now, try find the parts list in the old DragonFruit Scel folder. It should still be there in the archive. We should try to look through our available parts in the lab to find out what we still need. | + | |
| - | + | ||
| - | Kevin could you begin redesigning the board layout? as in the planes around the charging chip. see if we can change them to vias. I want to see if its possible to also use a different packaging for the charging chip. Garret and brian already bought another package so we might be able to use it (meaning its the same exact part, but it will be much easier to solder on). Gordon and i should also do some research into that stuff. | + | |
| - | + | ||
| - | As for me, Im going replace the charging chip on the circuit to see if that works. Also I'm going to be working on finalizing the 3D print of the housing components and send them to Tyrin. Apple stopped working so theyre trying to get the key to the roof. If possible, we might be able to deploy and see if the circuit works while its being charged by the solar panel. | + | |
| - | * | + | |
| - | * Dylan helped work on an arduino code will help us monitor the voltages on the XBee | + | |
| ==== 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 | + | |
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