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arendst / Tasmota

Alternative firmware for ESP8266 and ESP32 based devices with easy configuration using webUI, OTA updates, automation using timers or rules, expandability and entirely local control over MQTT, HTTP, Serial or KNX. Full documentation at
https://tasmota.github.io/docs
GNU General Public License v3.0
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Wemos D1 mini, VCC read too low #3286

Closed Claus55 closed 6 years ago

Claus55 commented 6 years ago

Please bear with me if I overlooked something, but I'm still quite new to Tasmota. I have a couple of ESP8266 (ESP-12F) which I've flashed with Tasmota sonoff.bin respectively version 5.14.0 and 6.1.1, and when I issue the cmd. status 11 they all report the VCC to be around 3.3 volts. After purchasing a D1 Mini NodeMcu 4M bytes Lua WIFI Development Boards ESP8266 and flashing it with 6.1.1., I tried the same cmd. (status 11), but it always reports a voltage around 2.8 volts. (5.14.0 also tested with same result). Am I missing something or is it working as designed? /Claus

ascillato commented 6 years ago

It is Ok. That is the voltage in wemos and in nodemcu.

No issue. It works that way.

If your question has been addressed, please, close this issue. Thanks :+1:

Claus55 commented 6 years ago

I thought it was me, who should close the issue when I felt my question was answered. But ascilato thinks otherwise! :-| Isn't there no way to get it to report the VCC correct? Via a shield? Doesn't any the Wemos D1 boards report the VCC correct? /Claus

ascillato2 commented 6 years ago

Hi,

Sorry. If you think you need more help, you are able to reopen the issue if you want. No problem at all.

Tasmota can not do anything to the VCC value of the power regulator of the WEMOS nor NODEMCU. Sorry.

Claus55 commented 6 years ago

you cannot re-open your own issues if a repo collaborator closed them.

ascillato2 commented 6 years ago

Reopened as asked.

What else we can do for solve your issue?

Claus55 commented 6 years ago

Isn't there no way to get it to report the VCC correct? Via a shield? Doesn't any the Wemos D1 boards report the VCC correct? /Claus

ascillato commented 6 years ago

No,

The Hardware was made like that.

ascillato commented 6 years ago

That reading is not a Tasmota Software Issue.

Please, remember that Tasmota is mainly aimed for Sonoff devices to be integrated in Home Automation.

Also, please do not get upset when closing issues. This Github issue tracker is for tracking Tasmota software bugs and for feature requests. If there are many issues opened, we have an extra difficulty to follow all the issues and solve the bugs as there are a lot of issues being left behind by their authors or stuck in troubleshooting.

If an issue is closed and you think you need more time, more attention, etc. Just ask to be reopen. No problem at all. The issues are for track the problem.

What else we can do for you?

Claus55 commented 6 years ago

I'll modify the board similar to: https://arduinodiy.wordpress.com/2016/12/25/monitoring-lipo-battery-voltage-with-wemos-d1-minibattery-shield-and-thingspeak/ Therefore I ask about shield!

I never claimed it to be a Tasmota bug! I only aks some questions, and the shield part was not answered. To me it looked like you were more interested in closing that answering. Have a nice day. Claus

ascillato commented 6 years ago

Hi,

shield part was not answered

Sorry if I was inacurate in the answer. I should quote your questions to point my answers. Were No to both questions.

The Board you show will work as you are measuring a battery with the ADC. No problem with that. Wemos and Nodemcu have those low reading by hardware design for using that ADC internally to measure the VCC of the regulator. That is (if you want to say) a Hardware issue. This low measurement is due to the resistors that wemos and nodemcu have attached to its ADC pin. The ADC pin need to be float to read the internal VCC but WEMOS and NODEMCU are intended to have the ADC ready for being used with that resistor bridge for outside measurements. Please, search for the nodemcu schematics. Your board will not work for internal measurements.

To me it looked like you were more interested in closing that answering.

Sorry if you perceive that. Was not the intention.