@felmue Tried both. 3.3V has a bit higher current. Strange, if there's just an LDO (guessing - no schematics!).
Also removed IR and RGB LEDs. Tried with Arduino and Espressif IDF deep-sleep example. No success. NodeMCU with Wroom32 is kind of OK (1.6mA), by the way. But mechanically too large ...

@ajb2k3 I wasn't aware of ultrasonic I2C!
Wonderful!!!

Here I've only been able to find GPIO ones

Thank you veyr much for clarification

Thanks @robalstona , this works perfect, after some hours of struggeling I can now program the device.

Hi @greenleaf ,
Yes, it's Baidu AI cloud service.

Hello @alien

on the M5Atom there are no predefined pins assigned to RX2 and TX2. GPIO21 and GPIO25 are assigned to I2C so I would not use those. I have successfully tried GPIO19 for RX2 and GPIO22 for TX2.

Good luck!
Felix

@felmue said in Atom Lite with Earth sensor powered by Tailbat:

If, however, you are open to different hardware you can find boards which are designed specifically for low power consumption.

I chose Atom Lite with Tail Bat because of:

Out of box solution e.g. board with battery including case. It is small and it looks nice. Cheap / good price. Bunch of sensors which can be easily connected.

I don't know about any other HW which fits these categories. I'm using also other products for home automation which can be on battery for 2 years at least but it is x3 more expensive so I'm kind of surprised with the result :(

I've posted a guide a few times about using the "cold boot method" to install the drivers and windows and mac cause issue with corrupting the driver if the cold boot process is not followed.

Hi there,
Can you give me a link to this tutorial?
Or maybe a snippet of the code so that I can see the steps to take?
I have been searching for a way to do an NTP time synch on an M5StickC for a while now, preferably using Blockly and UIFlow, but yet to find a reliable answer.
Thanks.
Wayne.

Yes, it will work with the PbHUB.
This is an example on UI Flow. The relay is connected to PbHUB port 0

0_1609104140897_77cd9ae0-5c1a-42a3-974b-1037206c1a7c-image.png

Very weird...
After some other tests, I did not find why it's working, but it is !

It was not working until I added WiFi.setHostname() before begin(), but it is still working after commenting it...

WiFi.mode(WIFI_STA);

//WiFi.setHostname("Atom-1");

WiFi.begin(ssid,password);

Thanks, that worked. Now, I need to find the MAC address of the ATOM. Is there an easy way to do that?