Search found 21 matches
- Fri May 04, 2018 8:54 am
- Forum: General Discussion
- Topic: How bout dat RSSI
- Replies: 4
- Views: 6750
Re: How bout dat RSSI
For my oil tank monitor I see an RSSI of -75 to -85 and a transfer time of 1.5 to 2 seconds. Transfer time is from wake up through sensor data collection, sending the data to my MQTT server and back to deep sleep. This is in a fairly clean WIFI environment. There's a screen shot in my post here: htt...
- Thu May 03, 2018 10:54 am
- Forum: General Discussion
- Topic: Measure VDD33 using ADC2
- Replies: 6
- Views: 13789
Re: Measure VDD33 using ADC2
Perhaps someone will correct me if I'm wrong here, but .. . I don't think you can do this directly. An ADC needs a reference to measure against and the ESP32 does not have one. I know some have said there is a 1.1v reference, but I think this is just the default 0db input range. It is so variable (1...
- Fri Apr 13, 2018 12:18 pm
- Forum: General Discussion
- Topic: ESP32 on Batteries - your setup
- Replies: 50
- Views: 100556
Re: ESP32 on Batteries - your setup
Perhaps the ESP could wake up every 2 minutes and check the readings against the last lot sent.
Then it would only need to alert you to a change. Depends on how quickly the data changes though.
Then it would only need to alert you to a change. Depends on how quickly the data changes though.
- Fri Apr 13, 2018 10:27 am
- Forum: General Discussion
- Topic: ESP32 on Batteries - your setup
- Replies: 50
- Views: 100556
Re: ESP32 on Batteries - your setup
If you don't really need the data to actually be sent every 2 minutes, you could wake up every 2 minutes and just log the data before going back to deep sleep. Then once per hour send it over WIFI. That would save you a lot of power.
- Fri Apr 13, 2018 10:09 am
- Forum: General Discussion
- Topic: ESP32 on Batteries - your setup
- Replies: 50
- Views: 100556
Re: ESP32 on Batteries - your setup
Guys, seriously, does ESP32 on battery project(using wifi of course) even exist? I did alot of search and cant find anything usable. I am using an ESP32 to monitor heating oil level. It takes a reading every hour and transmits that back over WIFI to my MQTT server. It actually sends a data blob con...
- Tue Apr 03, 2018 4:41 pm
- Forum: ESP32 Arduino
- Topic: Waking up from deep sleep, detect that and run different setup.
- Replies: 2
- Views: 4904
- Mon Mar 12, 2018 2:02 pm
- Forum: ESP32 Arduino
- Topic: Practical usage of the built-in hall sensor
- Replies: 11
- Views: 48831
Re: Practical usage of the built-in hall sensor
It can sense a magnet and would make a good wifi door open detector, but It's the wrong choice for current measurements.
There's an Arduino example showing how to use it.
Try it with a magnet and you will see where it is sensitive and how much.
There's an Arduino example showing how to use it.
Try it with a magnet and you will see where it is sensitive and how much.
- Wed Jan 24, 2018 1:28 pm
- Forum: General Discussion
- Topic: Battery and listening on wi-Fi
- Replies: 7
- Views: 24131
Re: Battery and listening on wi-Fi
I have a similar requirement. I will be using the ESP32 to log data every 10 minutes and then a user will come by to download the data via wifi periodically (once a week to once a month). A deep sleep mode that could wake up when the user comes by would be ideal. Currently, I'm around 110mA and hav...
- Fri Jan 12, 2018 1:08 pm
- Forum: General Discussion
- Topic: Getting signal intensity of packet received in station mode (RSSI)
- Replies: 2
- Views: 5597
- Tue Oct 03, 2017 12:50 pm
- Forum: General Discussion
- Topic: Modbus port for ESP32
- Replies: 4
- Views: 7570
Re: Modbus port for ESP32
I've not used them, but there are arduino modbus libraries on github. Have you tried those?