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Published 20 hours ago • verified publisher icon schreibfaul1

IR remote range is very low!!!

Open clear-sky opened this issue 1 year ago • 9 comments

The range of the remote control is very low, it doesn't even work from a distance of 2 meters. I use the same remote control for another project, which works easily from a distance of 10 meters!

clear-sky avatar Apr 22 '24 10:04 clear-sky

If nothing is blocking the infra-red light transmission (e.g. glass), maybe the signal is bad. Noisy power supply? Long wires? add pullup resistor?

steve6375 avatar Apr 22 '24 11:04 steve6375

none of them--- i think the problem is the protocol of my remote that is NEC-extented and wait for Wolle's opinion

clear-sky avatar Apr 22 '24 12:04 clear-sky

There are a wide variety of IR receivers on the market. Some do not have a TTL output but are "open collector". A pull-up resistor is then required. Although some receivers are encapsulated in a metal housing, there is still an influence from the WiFi field. The greatest possible distance from the WiFi antenna is required. If it has to be very sensitive (because greater distances have to be bridged), a TSOP4838 image is the first choice. This is absolutely insensitive to interference radiation.

schreibfaul1 avatar Apr 22 '24 13:04 schreibfaul1

Hi Dear Wolle! thanks for the answer- my receiver is vs838 my MWR config is esp-s3 so i dont use bluetooth i have made your dotmatris esp8266 clock and have added ir remote to it with the same receiver in both project environment wifi exist and i use an ir remote for both ir remote range in clock in 10m is nice but in MWR is not more than 1 m can you test your remote range?

clear-sky avatar Apr 22 '24 21:04 clear-sky

this is my interface and pullup resistor value is 22K VS838-application-circuit

clear-sky avatar Apr 22 '24 22:04 clear-sky

Hi dear Wolle! I could not find tsop4838 in iran market but have a question according to this datasheet tsop4838 is 3.3v compatible https://www.vishay.com/docs/82459/tsop48.pdf ---what is the reason you have used 5v for powering it? MiniWebRadioV3_schematic

clear-sky avatar Apr 26 '24 19:04 clear-sky

I operate the TSOP4838 with 5V. According to the data sheet, the maximum voltage is 5.5V. The advantage is the suppression of interference pulses. Your IR receiver will be more sensitive if you move it as far away as possible from sources of interference.

schreibfaul1 avatar Apr 26 '24 19:04 schreibfaul1

in my opinion using ir recievers with pullup resistor and 5v supply will damage the mcu technically this way is not correct

clear-sky avatar Apr 26 '24 20:04 clear-sky

This method reminds me of high voltage heart shock

clear-sky avatar May 07 '24 18:05 clear-sky

This issue is stale because it has been open for 30 days with no activity.

github-actions[bot] avatar Jun 07 '24 02:06 github-actions[bot]

This issue was closed because it has been inactive for 14 days since being marked as stale.

github-actions[bot] avatar Jun 22 '24 02:06 github-actions[bot]