If you have never worked with solder jumpers and PCB traces before or would like a quick refresher, check
out our How to Work with Solder Jumpers and PCB Traces tutorial for detailed instructions and tips.
There are a total of seven adjustable solder jumpers on the MicroMod Weather Carrier Board labeled
I C
,
MEAS
,
BYP
,
VE
,
UV
,
5V
and
3V3
. The table below briefly outlines their functionalities:
Jumper
Name/Label
Description
Default
State
I C Pull-Up/I C
Pulls the SDA/SCL lines to
3.3V
via two
2.2K Ohm
resistors
CLOSED
Measure/MEAS
Open this jumper to probe the current draw at the
3.3V
output of the regulator.
For help measuring current, take a look at our How to Use a Multimeter tutorial.
CLOSED
Bypass/BYP
The "penny-in-the-fuse" jumper. Bypasses the
6V/2A
fuse and nets VIN and
V_USB together.
Close only if you know what you are doing!
OPEN
Voltage
Regulator
Enable/VE
Voltage regulator control. Close this jumper to control the VREG in low-power
applications.
OPEN
UV Sensor
Power/UV
Connects VDD of the VEML6075 UV Sensor to
3.3V
. Open the jumper to disable
power to the UV Sensor.
CLOSED
VIN LED
Power/VIN LED
Connects the 5V/VIN LED to
5V
via a
1K Ohm
resistor. Open to disable the
LED.
CLOSED
3.3V LED
Power/3V3
LED
Connects the 3.3V LED to
3.3V
via a
1K Ohm
resistor. Open to disable the LED.
CLOSED
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MicroMod Pinout
2
2
2
