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weatherbox:dragonfruit:meeting_minutes_february_27_2017 [2017/03/04 03:37] tyamauchi |
weatherbox:dragonfruit:meeting_minutes_february_27_2017 [2021/09/19 21:59] (current) |
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| * Incorporate a voltage divider to that connection. | * Incorporate a voltage divider to that connection. | ||
| * Add decoupling capacitor to the vswitch connection (may or may not matter) | * Add decoupling capacitor to the vswitch connection (may or may not matter) | ||
| + | * Charging chip debug LED tests | ||
| + | * 1 - 5bit number to voltage tests | ||
| + | * this is used to make sure that the charging chip follows tryston's charging chip behaviors | ||
| + | * to be completed for adafruit charging chip and dragon fruit charging chip | ||
| + | * 5bits = 31 in decimal | ||
| + | * 0 = 3V | ||
| + | * 9 = 3.9V | ||
| + | * 13 = 4.3V | ||
| + | * 20 = 5V | ||
| + | * 2 - Use 3 debug LEDs to visually indicate when switching between solar panel and battery | ||
| + | * LED 1 : Vload = Solar Panel | ||
| + | * LED 2 : 4.3 < Vload < 4.5 (around the voltage that Vload switches from Panel to Battery power) | ||
| + | * LED 3 : Vload = battery mV | ||
| + | * If all are off, then the load voltage is between 4.3V and battery voltage | ||
| + | * Need to connect Vload to MCU | ||
| + | * 3 - Use LEDs to flag Ghost voltage, low XBee voltage, and dropped transmission | ||
| + | * LED 1 : Ghost voltage is 4V (this is much too high for XBee power) | ||
| + | * LED 2 : XBee voltage at less than 2.7V (full range is 2.7 - 3.6V) | ||
| + | * LED 3 : flag for transmission (we do not know how to do it yet) | ||
| + | * Need to connect XBee power to MCU | ||