Timeline for Low power + Logging motion detection
Current License: CC BY-SA 3.0
6 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Dec 12, 2015 at 6:07 | comment | added | lone | hmmms so a button and LED huhs. that sounds like a good idea...if i go for purely the chip alone, the USB serial is only needed when i flash in the program right? after that I can take it out which should hopefully help with reducing power consumption | |
| Dec 11, 2015 at 16:05 | comment | added | Chris Stratton | RAM is cleared by software. Removing the module for serial download should be possible if removing an sdcard is. Having a button and LED to flash the open count might be easiest, and can mean no issues with trying to stop a USB serial from consuming power... | |
| Dec 11, 2015 at 12:19 | comment | added | lone | hmmms...it is going to be a standalone though so having a serial port doesn't sound feasible. trying to find a way to stop ram from being initialized on reset..is that even doable? | |
| Dec 9, 2015 at 13:53 | comment | added | Chris Stratton | Probably have it upload the data over the serial port. That does mean that for ram you would need to either disable auto reset or stop the utilized part of ram from being intitialized on reset. | |
| Dec 9, 2015 at 11:40 | comment | added | lone | ok so i could do without a SD card but how do i go about retrieving the data if i store it on the on-chip EEPROM or static RAM? RAM is fine actually since i don't need persistent data, just the mere fact that someone opened the door i.e. i want to track the number of times the door is opened in the period that i am gone so that i can go hammering around to find out who actually opened my door. a contact sensor....i might consider that...just need to factor debouncing as my door isn't exactly tight so a kick or a nudge may set off the program to count as an event occurrence. | |
| Dec 9, 2015 at 4:11 | history | answered | Chris Stratton | CC BY-SA 3.0 |