Search found 97 matches

by ThomasChr
Sun May 19, 2019 7:08 pm
Forum: ESP32 boards
Topic: Power consumption of TTGO T8 Board
Replies: 3
Views: 101

Re: Power consumption of TTGO T8 Board

VDD_SDIO is not pulled low when entering deepsleep. So flash and psram aber active in deepsleep. Any ideas how I could change that?
by ThomasChr
Sat May 18, 2019 5:41 am
Forum: ESP32 boards
Topic: Power consumption of TTGO T8 Board
Replies: 3
Views: 101

Re: Power consumption of TTGO T8 Board

Hi jimmo, thanks for your help! This is the code I use, maybe I can switch something of in the Code? import time import machine led = machine.Pin(21, machine.Pin.OUT) while True: # 30 Secs blink for i in range (0, 15): time.sleep(1) led.value(1) time.sleep(1) led.value(0) # 30 secs deepsleep machine...
by ThomasChr
Fri May 17, 2019 8:46 pm
Forum: ESP32 boards
Topic: Power consumption of TTGO T8 Board
Replies: 3
Views: 101

Power consumption of TTGO T8 Board

Hello Forum, I‘ve got a TTGO T8 v1.7 Board, details can be found on Github https://github.com/LilyGO/TTGO-T8-ESP32 and I‘ve attached the schematics. The board can be powered by a Battery and this battery does only provide the 3.3V rail. Seems pretty right to me! But when I use machine.deepsleep() an...
by ThomasChr
Wed May 15, 2019 11:58 am
Forum: Pyboard D-series
Topic: ADC specs
Replies: 1
Views: 84

Re: ADC specs

You want to look up the specs of the microcontroller itself: https://www.st.com/en/microcontrollers- ... 2f7x2.html
by ThomasChr
Mon May 13, 2019 9:41 am
Forum: ESP8266 boards
Topic: How to switch on a electric bulb with ESP8266 board?
Replies: 13
Views: 312

Re: How to switch on a electric bulb with ESP8266 board?

@RajaRamesh:
You simply switch on or off the Pin which is connected to the Relay. There is no magic involved here!
by ThomasChr
Sat May 11, 2019 7:47 am
Forum: ESP8266 boards
Topic: Powering relay with NodeMcu
Replies: 8
Views: 213

Re: Powering relay with NodeMcu

By the way: You can think of voltage as the force with which a water stream flows (water high up from a mountain has more force). The current is the amount of water flowing.

So you stream from the ESP8266 has enough force but simply it is not wide enough and so it‘s not enough water.
by ThomasChr
Sat May 11, 2019 7:41 am
Forum: ESP8266 boards
Topic: Powering relay with NodeMcu
Replies: 8
Views: 213

Re: Powering relay with NodeMcu

The relay module should be controllable by an ESP8266 board. You power it via 5V from the esp board and use a 3.3V gpio pin to trigger it. It‘s not actually really specified to get switched by 3.3V instead of 5V but it should work. The think you struggle with right now is not voltage, it‘s current. ...
by ThomasChr
Fri May 10, 2019 10:33 am
Forum: MicroPython pyboard
Topic: The USR switch
Replies: 2
Views: 192

Re: The USR switch

See the shematic: As far as I know there is no debouncing happening anywhere. You need to do it yourself.
by ThomasChr
Thu May 09, 2019 5:04 am
Forum: ESP8266 boards
Topic: Esp8266 in the post
Replies: 2
Views: 93

Re: Esp8266 in the post

Do you have a link to the board?

Flash is typically 512 KB to 4 MB. But don‘t worry, even 512 KB are enough for starting.