Can't find TSO4838 device

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dynamicdave
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Can't find TSO4838 device

#1 Post by dynamicdave » 24 Sep 2018, 14:11

Hi,
I'm trying to find the "Device" dropdown to interface with the IR receiver TSOP4838.

I'm currently using mega-20180924 Normal and Test version.

Does anyone know which version of ESP Easy the IR receiver can be found???

Kind regards from David

Shardan
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Re: Can't find TSO4838 device

#2 Post by Shardan » 24 Sep 2018, 14:15

Try the IR version.

There's a separate version for IR now as the IR-Library gets too big.
Regards
Shardan

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dynamicdave
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Re: Can't find TSO4838 device

#3 Post by dynamicdave » 24 Sep 2018, 14:38

Thanks for your swift response.

Now why couldn't I see that version/entry in the release I downloaded today??

Might be time for an eyesight test !!!!

Thanks again.

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dynamicdave
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Re: Can't find TSO4838 device

#4 Post by dynamicdave » 24 Sep 2018, 19:34

Hi Shardan,
Do you know if the TSO4838 should respond to a TV remote??

When I used to use the old TSO1838 devices (many years ago with PIC microcontrollers) I had to fire an IR beam that was modulated with a 38KHz carrier.

Does the TSO4838 work in the same way??

Kind regards from David.

Shardan
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Re: Can't find TSO4838 device

#5 Post by Shardan » 24 Sep 2018, 19:54

Hi David,
atm i have to pass out on this.
The TSOP4838 uses 38KHz... TSOP48 is the type and "38" the frequency.

With the old R148 ESPEasy I used an arduino with a TSOP 4838
to read the IR remote and (hopefulls..) get back a usable code.
A description of the settings and commands is in the wiki: https://www.letscontrolit.com/wiki/inde ... /IR-Remote

Due to lack of time I didn't do anything with the new IR-binary yet so
I can't say how it works and which values are returned.
Regards
Shardan

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dynamicdave
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Re: Can't find TSO4838 device

#6 Post by dynamicdave » 14 Jan 2019, 10:24

I've just been trying to get a TSOP4838 IR receiver working with ESP Easy.

I'm using the IR version of mega-20190109.

Has anyone managed to get the IR receiver working and if so, with which firmware version?

Kind regards, David

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dynamicdave
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Re: Can't find TSO4838 device

#7 Post by dynamicdave » 14 Jan 2019, 18:59

Responding to my own post - that's strange.

Well I have made some progress - I made a small test circuit (without using a Wemos, just an LED and a resistor) and discovered the TSOP-4838 doesn't seem to work off +3.3V supply only 5V.
The datasheet says it should work on +2.7v to 5.5V.
I then made up a breadboard with a Wemos and powered the TSOP-4838 from the +5V connection.
I made up a down level shifter using a couple of resistors and finally got number-strings coming out of the device.

If I allow a short delay or break between pressing a button on the remote IR controller, the number strings seem fairly repeatable.
If I press the button quickly then I get a different number-string each time.

Well at least I've made progress.

Shardan
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Re: Can't find TSO4838 device

#8 Post by Shardan » 15 Jan 2019, 18:42

Hi Dave,

take a look at

https://letscontrolit.com/wiki/index.ph ... /IR-Remote

That's the IR transceiver i've designed some time ago... still working on an old R148 Version
as I didn't find the time to change to new version including adaption of my FHEM config.
Regards
Shardan

damdub
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Re: Can't find TSO4838 device

#9 Post by damdub » 08 Sep 2021, 15:55

Hello,
I'm digging this one up because I neither can't find TSOP4838 in the devices list.

I downloaded ESPEasy_ESP82xx_mega-20210802 zip file from https://github.com/letscontrolit/ESPEasy/releases

I flashed a wemos d1 mini with the ESP_Easy_mega_20210802_normal_ESP8266_4M1M bin, in this one many devices available but not the one I'm looking for
I then flashed it with the ESP_Easy_mega_20210802_custom_IR_ESP8266_4M1M bin. Here I can find other devices in the devices list but much less than in the previous list. Still no IR device, and no TSOP4838 device.

I tried exactly the same procedure with older mega releases, one from 2020 and another from 2019. Had no luck with these ones neither.

Does anyone here can help me with this ?

I want to use this TSOP4838 chip to receive infrared command from TV remote control and then execute actions from Domoticz.

Thanks a lot for your help
Damien

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Ath
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Re: Can't find TSO4838 device

#10 Post by Ath » 08 Sep 2021, 16:48

You can find that plugin in the 'minimal_IRext_ESP8266_4M1M', 'minimal_IRext_ESP8266_4M2M' and 'minimal_IRext_ESP8266_1M' (minimal difference in name...) builds, the device is called "Communication - TSOP4838".
/Ton (PayPal.me)

damdub
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Re: Can't find TSO4838 device

#11 Post by damdub » 10 Sep 2021, 10:31

Hello and thank you for your reply
I finally found it in the devices list.
Not working at all anyway, but at least I can see it.
Do you have any experience with this device ?
Until now I only see the IR values (in the devices list) change every few seconds on its own without any infrared signal sent to it.
And when I try to shoot it with my TV remote control nothing happens, I thought that it would receive the signal and add new received code to the command line. It looks like it never detects any IR signal.
Maybe do I have to search other topics.
Thank you anyway for your help.
Damien

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Ath
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Re: Can't find TSO4838 device

#12 Post by Ath » 10 Sep 2021, 10:49

Well, I just followed the wiring as documented here, set the task configuration to the GPIO used, fired a remote at it and it 'just worked'. Be sure to power it with 3.3V at its 'Vs' pin, not with 5V!.
/Ton (PayPal.me)

damdub
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Re: Can't find TSO4838 device

#13 Post by damdub » 10 Sep 2021, 11:27

Hello and thank you again
it seems to work now
I was powering the wemos from my laptop usb port. I think that this kind of power is not optimal and was disturbing the TSOP module.
Thank you for your support
Damien

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