5V Low Level Trigger 1 Channel Relay Module Interface Board Shield DC AC 220V For PIC AVR DSP ARM MCU Arduino
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4.7
A![cz](https://hatscripts.github.io/circle-flags/flags/cz.svg)
A***r
Logistics: Cainiao Super Economy Global
Okay, so I had been struggling with this level shifter for 2 days on ESP32. First thing is that numbers on my relay are different than one on the screens (I got is FL-3FF-S-Z).
I had trouble controlling it with esp32 with the 3.3v gpio when powered from 5V. Since this relay module is activated (energized) with LOW output and to deactivate it you need something close to 5v I wasn't able to deactive it with esp's gpio which when set to HIGH is only 3.3v.
But then I tried powering the relay from the 3.3v pin and it actually worked! It is probably not stale or safe, but it worked.
In the end I had logic level shifter laying in my drawer and with it I was able to power the relay from 5V and then level shift control pin from my esp from 3.3.v to 5v.
tl;dr: if you have arduino you are probably fine. For ESP then there are better relay modules that you can control with 3v gpio. (you still need 5v power supply to power them that is an easier thing to solve).
December 05, 2021
V![ru](https://hatscripts.github.io/circle-flags/flags/ru.svg)
V***r
Logistics: Cainiao Super Economy
received July 30th, Thank Vou
August 01, 2021
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R***n
Logistics: Cainiao Expedited Economy
Everything ok
December 22, 2021
Prices at other sellers from 0.25 $
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Dc 5v 1 channel relay module controller board for arduino pic avr dsp arm mcu relay
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Product specifications
- Contact Load: Low Power
- Voltage: 5V
- Brand Name: diymore
- is_customized: Yes
- Power Source: DC
- Theory: Other
- Protect Feature: Other
- Usage: Other
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