@m5stack said in m5Atom Lite IR range:

We have tested the launch distance， the IR signal can trasmiter 50~60cm。 did your transmitter program modulate the transmit signal? @alperkal @veryalien

The built-in infrared receivers and transmitters seem to be ignored by m5stack, so we all try to copy or modify other infrared libraries which might not work with the hardware correctly.

Could @m5stack please implement, test and publish a standard infrared tx/rx api for all the m5stack cores and bases with infrared tx and/or rx?

This would solve all the issues with questions "how did you try to implement infrared communication?". If the expected range and performance are published then we would all know exactly what to expect from the m5stack infrared hardware.

I also have about 2cm IR range from my atoms (matrix or lite). That isn't useful at all. I didn't try modifying the case to get any more range, that shouldn't be a solution.
It looks like a bad design/implementation problem to me. Infrared comms is not exactly new technology. TV/DVD/Sound system remote controls have been doing this for years over at least 5m distance.
I decided to ignore IR and use espnow between M5 cores where I can. The range is about 5m from the atoms, which is just about ok for home automation projects. I also understood that the wifi range of the atom is being improved. Unfortunately not all devices are wifi network compatible, so a nice, longer distance infrared signal would be much, much better. I hope this infrared problem can be solved.

I don't think he means controlling the faces II base itself, I'm sure he means you can communicate with a module that uses serial comms mounted on the base using a grove cable from a separate m5stack core (with a serial port or pins).
The grove port on the m5stack will supply the power for the module on the base and serial tx/rx data will be transferred over the cable instead of directly over the internal M-BUS. Which is how it will usually work with a stack of modules under a m5stack core.
I'm not sure if this "remote" serial cabled comms is actually very useful in the real world.

Edit: I just realised that the faces finger board uses serial (uart), so you could put a fingerprint faces board on the faces base and communicate with it over blue port c using pins 16/17 from a separate m5stack core.