We are still shipping! However, order processing may take longer than usual and we cannot guarantee same day shipments due to staffing guidelines from the CDC. Please see all COVID-19 updates here. Thank you for your continued support.
Track My Order
Frequently Asked Questions
International Shipping Info
Mon-Fri, 9am to 12pm and
1pm to 5pm U.S. Mountain Time:
Chat With Us
October 20, 2012
about 5 years ago
Oh my God! Thank you for explaining it so nicely! I was going crazy trying to figure out what the V represented. =D
I was trying to figure out how build something like this and SparkFun to the rescue. And, of course, it's backordered. LOL!
Anyone else having trouble with the charging amperage calculation for the MCP73831T? The data sheet and the SparkFun schematic both say it's calculated as: I = 1000V / R where:
I = charging current in milliampere
R = programming resistor in kOhms
What is V? Without V the formula works:
100u = 1000 / 10kOhm
According to the data sheet V appears to be Input voltage. Unfortunately, when including V in the formula, everything breaks:
100u =/= 1000 x 5v / 10kOhm
Anyone know what I'm missing?
about 6 years ago
Looks like they updated the product description to "NO". Guess that means "Normally Open".
So it appears that this is a "normally open" switch. Anyone happen to have a link to the data sheet for this switch? I need to know the temperature range this switch can operate at. A garage in Phoenix can get pretty hot during the summer. Don't want it to melt.
No public wish lists :(