- Sat Feb 21, 2015 2:25 am
#10306
Great concept. We were looking into this by leveraging a picaxe as a very low power watchdog service: www.picaxe.com.
- Tue Apr 21, 2015 11:33 pm
#15252
An update :
We used ESP-12 with the Lua firmware to write a simple program that puts the chip into sleep mode and wake
up every 90 seconds to send out probe requests (just do an SSID scan).
Using 2 AA batteries that started out at 2.9V in series (lets assume they only have 2000 mAh) in series, this setup lasted a total of 27 days , which amounts
to about 75 mAh per day. The terminal voltage of the 2AA batteries in series is less than 1.8V , at this level the chip cannot successfully power on.
If we equip the setup with 2x D cells (around 15,000 ~ 18,000 mAh) this setup could run up to 9, 10 months depending on the type of D cell.
We used ESP-12 with the Lua firmware to write a simple program that puts the chip into sleep mode and wake
up every 90 seconds to send out probe requests (just do an SSID scan).
Using 2 AA batteries that started out at 2.9V in series (lets assume they only have 2000 mAh) in series, this setup lasted a total of 27 days , which amounts
to about 75 mAh per day. The terminal voltage of the 2AA batteries in series is less than 1.8V , at this level the chip cannot successfully power on.
If we equip the setup with 2x D cells (around 15,000 ~ 18,000 mAh) this setup could run up to 9, 10 months depending on the type of D cell.
- Thu Apr 23, 2015 8:21 am
#15373
Hi Nonokunono,
Can you tell me which version on lua firmware you are using for this test?
I have noticed some wake up issue when going to deep sleep mode, and I am using now a c compiled firmware to do the deep sleep.
Thanks and regards,
Plucker
Can you tell me which version on lua firmware you are using for this test?
I have noticed some wake up issue when going to deep sleep mode, and I am using now a c compiled firmware to do the deep sleep.
Thanks and regards,
Plucker
- Thu Apr 23, 2015 8:37 pm
#15443
I used 0.9.4 based nodemcu firmware.
