IR 5V decoder encoding transmitter & receiver connected to NodeMCU

[Glenn Chapman]

Hello,

I am looking for assistance please.

I have flashed a NodeMCU ESP8266 (version 5.14.0) with Tasmota and it works just fine.  I have configured to a 18 Generic and chosen TX GPIO1 Serial Out as "08 IRSend" and RX GPIO3 Serial In as "47 IRrecv"

I have then hooked up a IR 5V decoder encoding transmitter & receiver as per https://www.aliexpress.com/item/2PCS-5V-IR-Infrared-Remote-Decoder-Encoding-Transmitter-Receiver-Wireless-Module/32682922923.html

TX to TX, RX to RX Vin to 5V and GND to GND

When I send a command such as IRsend {"Protocol":"NEC","Bits":32,"Data":0xE0E040BF} on console I receive MQT: stat/SonoffTV/RESULT = {"IRSend":"Done"}

However nothing seems to be sent or received through the IR 5V decoder encoding transmitter & receiver.

Can anybody inform me as to what I might be doing wong please?

Thanks in advance

[Tercio Gaudencio Filho]

As long as I know, the tasmota is to drive a LED directly, your module may have some kind of modulation.

I did some IR using just an LED and a resistor connected to a GPIO.

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[Yann Mengin]

My module seems to work well. I have proper detection when I move in front of the sensor. My problem is that the sensor return “OFF’ status 2 seconds after “ON’. As a consequence the light turns off.

I am trying a turn around solution with automation rules

Thanks 

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[Tercio Gaudencio Filho]

Yann,

There is 2 options. These modules have 2 pots, for sensitivity and for timing. The second one is responsible for maintaining the output ON, yours must be configured for 2 seconds(All way left).

Also there is a re-trigger jumper, which configures if it will maintain ON after a motion is detected another time.

https://howtomechatronics.com/tutorials/arduino/how-pir-sensor-works-and-how-to-use-it-with-arduino/

Adjusting the second pot probably will solve your problem.

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Atenciosamente,

Tercio Gaudencio Filho

[Yann Mengin]

Hi Tercio

I am aware of this but I am not using this motion sensor. Instead I am using the very tiny one that you can buy for a few dollars on line, working in 3.3V. They send their status ON/OFF every 2 seconds and as long as you move in front, they register the ON status but do not send it. The next transmission will be OFF.

I do not want to use the one with the 2 pots because I want to allow the user to tweak the timer through the GUI.

Thanks anyway

[Tercio Gaudencio Filho]

I see, well, in this case, you could delay OFF using rules.