Some measurements were made on various ESP modules without additional connections
via the USB port with a U96 13 In 1 Usb Tester Dc Digital Voltmeter Amperimetro.
What is striking is that the ESP-WROOM-32 draws in a lot of power for me WIFI.SLEEP
and SLEEP mode. Possibly a bad part?
This table can be included in the annex of the ESP modules.
ESP32 LOLIN32 Lite 4Mb Flash
OPTION.CPUFREQ ESP32 WiFi WIFI.SLEEP SLEEP
Freq. 240 MHz I = 152-153 mA I = 70 mA I = 6 mA
Freq. 160 MHz I = 120-128 mA I = 48 mA I = 6 mA
Freq. 80 MHz I = 84-117 mA I = 38 mA I = 6 mA
ESP32 LOLIN32 Pro 4Mb Flash 4Mb Ram
OPTION.CPUFREQ ESP32 WiFi WIFI.SLEEP SLEEP
Freq. 240 MHz I = 115-117 mA I = 56 mA I = 8 mA
Freq. 160 MHz I = 98-100 mA I = 40 mA I = 8 mA
Freq. 80 MHz I = 90- 92 mA I = 30 mA I = 8 mA
ESP32 ESP-WROOM-32 4Mb Flash
OPTION.CPUFREQ ESP32 WiFi WIFI.SLEEP SLEEP
Freq. 240 MHz I = 167-168 mA I = 89 mA I = 22 mA
Freq. 160 MHz I = 144-147 mA I = 68 mA I = 22 mA
Freq. 80 MHz I = 131-135 mA I = 56 mA I = 22 mA
ESP8266 WEMOS D1 mini 4Mb Flash
OPTION.CPUFREQ ESP8266 WiFi WIFI.SLEEP SLEEP
Freq. 160 MHz I = 84 mA I = 32 mA I = 8 mA
Freq. 80 MHz I = 78 mA I = 26 mA I = 8 mA
Supplement to WIFI.RSSI annex.
WIFI.RSSI Returns the intensity of the WIFI signal
received when connected in STA mode.
RSSI or this signal value is measured in decibels (db)
from 0 (zero) to -120 (minus 120). The closer the value to
0 (zero), the stronger the signal will be. An RSSI of
-55 (minus 55) is a stronger signal than -70 (minus 70).
Pow occurs twice here?
POW (x, y) Returns the number x raised to the power of y
WIFI.POWER pow Set the WiFi output power.
"Pow" defines the value in dBm.
The range is from 0 to 20.5.
[list][/list]
Supplement annex
- cicciocb
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Re: Supplement annex
Hi Jan,[Local Link Removed for Guests] wrote: [Local Link Removed for Guests]Wed May 12, 2021 7:58 pm Pow occurs twice here?
POW (x, y) Returns the number x raised to the power of y
WIFI.POWER pow Set the WiFi output power.
"Pow" defines the value in dBm.
The range is from 0 to 20.5.
thanks for your feedback.
Maybe it could worth to create a dedicated post on the forum listing your measurements enabling someone else to reports these information for other kind of modules.
About the POW, I do not clearly understand your remark as
- POW(x,y) is a mathematical function (equivalent to x^y)
- WIFI.POWER pow is to set the power of the module
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Re: Supplement annex
Those sleep values look high to me, Jan. I'm getting a sleep current of 120µA on the modules I'm using.
A big factor in the sleep current is how well the device controls the UART shutdown in sleep mode and I wonder if by powering via the USB port you're keeping this awake.
Do you get the same values if you connect the power to the 5V input pin?
A big factor in the sleep current is how well the device controls the UART shutdown in sleep mode and I wonder if by powering via the USB port you're keeping this awake.
Do you get the same values if you connect the power to the 5V input pin?
- Fernando Perez
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Re: Supplement annex
I would like to point out two things:
1) It would be very good if you could insert tables in the messages. I have tried the "Tables" extension for phpBB of "Sniper_E" and the result looks good, but I find it very complicated for users. Some other system? 2) A pending issue for me, and I suppose that for many users, it is the best way to minimize the consumption of our ESP8266 and ESP32 through the different Annex options. Could you open a thread in which we all expose our experiences? The times I have tried to use "Fast boot" in the Config page and wifi.sleep as the first line, I have ended up having to link the TX and RX pins together in order to regain access to my module.
1) It would be very good if you could insert tables in the messages. I have tried the "Tables" extension for phpBB of "Sniper_E" and the result looks good, but I find it very complicated for users. Some other system? 2) A pending issue for me, and I suppose that for many users, it is the best way to minimize the consumption of our ESP8266 and ESP32 through the different Annex options. Could you open a thread in which we all expose our experiences? The times I have tried to use "Fast boot" in the Config page and wifi.sleep as the first line, I have ended up having to link the TX and RX pins together in order to regain access to my module.

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