Search found 102 matches

by kwiley
Sun Jun 23, 2019 2:46 pm
Forum: ESP8266 boards
Topic: ESP8285 ESP-01M
Replies: 4
Views: 1120

Re: ESP8285 ESP-01M

Yep. Thanks. I'm rapidly coming up to speed on the breathless diversity of options in the realm of these ESP8266/ESP8285/ESP32 chips. The D1 mini is nice. It maintains the very small form factor that I find so appealing, while still offering numerous GPIOs (including the ADC and GPIO16 for deep-slee...
by kwiley
Sat Jun 22, 2019 5:36 pm
Forum: ESP8266 boards
Topic: ESP8285 ESP-01M
Replies: 4
Views: 1120

ESP8285 ESP-01M

Inspired by a comment in another thread that brought the ESP8285 (not the ESP8266) to my attention, I found this remarkable device: https://www.aliexpress.com/item/ESP8266-ESP-01M-WiFi-module-serial-to-WiFi-customized-double-sided/32829376755.html In what is surely the smallest form factor I have ye...
by kwiley
Fri Jun 21, 2019 2:23 pm
Forum: ESP8266 boards
Topic: Only power sensor when not in deep sleep
Replies: 9
Views: 1249

Re: Only power sensor when not in deep sleep

That is pretty cool, but to be clear, that's a surface-mount (or snap-mount, I'm not sure of the technical term) device, which means it needs an entire support infrastructure before it can be used. Presumably there is a board with a snap-in slot built exactly for that to fit into, but then I'm back ...
by kwiley
Fri Jun 21, 2019 7:39 am
Forum: ESP8266 boards
Topic: Only power sensor when not in deep sleep
Replies: 9
Views: 1249

Re: Only power sensor when not in deep sleep

I haven't found anything else as small as the ESP-01S with an integrated wifi antenna. Do you think there is an equivalent alternative, either ESP8266 or ESP32?
by kwiley
Thu Jun 20, 2019 9:09 pm
Forum: ESP8266 boards
Topic: Only power sensor when not in deep sleep
Replies: 9
Views: 1249

Re: Only power sensor when not in deep sleep

I was trying to avoid an extra pin. I'm already using the TX pin to power the FET in the same as the relay you propose (to my limited understanding, I'm an electronics novice, more software oriented). The ESP-01S offers two native GPIOs (one hard-coded to the on-board LED) and two additional GPIOs s...
by kwiley
Thu Jun 20, 2019 7:31 pm
Forum: ESP8266 boards
Topic: Only power sensor when not in deep sleep
Replies: 9
Views: 1249

Only power sensor when not in deep sleep

I'd like to only power my sensor (soil moisture) when the ESP8266 (ESP-01S) is awake, which will be very infrequently, perhaps a few seconds per day. I have been successful in using the TX GPIO to drive a FET to control the sensor, but I'd like to recover that GPIO for other purposes (the TX/RX GPIO...
by kwiley
Sat Jun 15, 2019 2:20 am
Forum: ESP8266 boards
Topic: How to manually awake from deep sleep
Replies: 4
Views: 863

Re: How to manually awake from deep sleep

So I put a simple momentary switch between RST and GND. It resets the board just fine, but curiously, it still resets with a DEEPSLEEP_RESET as the cause anyway. If I run the following code, which creates the main.py necessary for a proper boot-up and then puts the board to sleep, and if I then pres...
by kwiley
Fri Jun 14, 2019 7:02 am
Forum: ESP8266 boards
Topic: How to manually awake from deep sleep
Replies: 4
Views: 863

Re: How to manually awake from deep sleep

I did a little digging and it looks like most circuits wire the RST pin to VCC with a resistor and then provide a switch to ground. So, the idea is that the reset pin spends most of its time high, but if you explicitly pull it low with a switch the board suddenly reboots?
by kwiley
Fri Jun 14, 2019 5:53 am
Forum: ESP8266 boards
Topic: How to manually awake from deep sleep
Replies: 4
Views: 863

How to manually awake from deep sleep

Say I want to run a sensor very rarely, once a day perhaps, using an ESP-01S. Upon waking from deep sleep, the sensor takes its reading, transmits the data to a web server, and quickly goes back to deep sleep. However, if I walk past the device, I want to be able to push a button that manually trigg...
by kwiley
Fri Jun 14, 2019 2:34 am
Forum: ESP8266 boards
Topic: Startup serial noise?
Replies: 2
Views: 630

Re: Startup serial noise?

Ok, that makes sense. Thanks.