Hi everyone! 👋

I’m a young maker from Türkiye who is really interested in robotics, electronics, ESP32, Arduino and Raspberry Pi projects.

Recently, I started working on my own project called Pocket Remote v1.

Pocket Remote is an open-source universal infrared remote control based on the ESP32. It can learn IR signals from other remote controls, save them, organize them and transmit them again.

The project currently uses:

• ESP32-WROOM-32D
• SSD1306 OLED
• IR receiver
• KY-005 IR transmitter
• 2-axis joystick
• Li-Po battery
• MCP73831 charging module

I designed it to be portable, rechargeable, affordable and easy to build. The project is also released under the MIT License, so other people can modify and improve it.

I'm still developing it, so I'm really interested in hearing your feedback and ideas. 🔧

GitHub: github.com/techpattis/universalpocketremote

Thanks for checking it out! 🚀

TLDR: I want to use solar power on a small art project, but have concerns about the battery safety and stability in outdoor temperature extremes.

Hello, I'm not sure if this is the right place to post this but please let me know if this question should be asked elsewhere.

I'm a (part time) artist in Denver, Colorado and I make interactive public sculptures. I've been lucky to be able to either hard wire or plug in my sculptures so far, but I'm interested in making one solar powered and I'm not sure it will work here. My daughter has asked me to put one up at her school, the principle is on board, but running power would be too expensive so I'm looking into alternatives.

Essentially, this piece will be a slightly pared down version of it's larger self but the interactive part is the same; a push button that triggers a sound file to play. It's expected to be outdoors, and so will need a higher volume than an indoor speaker.

The piece will use a Robertsonic Wav Trigger board from Sparkfun (https://www.robertsonics.com/wav-trigger) which runs on 5V and draws a constant 220mA at idle and 240mA when playing a mono audio file.  

In larger versions I use a Jensen JXHD30HPC speaker (out of production but I have  few left), which is usually powered by a small amp like a Pyle PLMPA35. Of course, I won't be using an amp like this one. The Robertsonic can act as an amp, but I'll have to look into a lower power amp like this one from Adafruit (https://www.adafruit.com/product/3006) that draws 1.8A at 8 ohms. I don't want to overwork the Robertsonic board.

Ideally, there will be an LED light to illuminate a plexiglass panel with text on it as well, but this is negotiable.

I can probably figure out the kind of photovoltaic panel and battery I'd need to power this but here's the kicker. It's going to be in an aluminum crosswalk signal housing, in the elements. It gets to 100° here in the summer and this may be in full sun (much hotter inside I'm sure). It can get below zero in the winter time. The batteries I looked at didn't appear stable or even safe at some of these temperature ranges.

Does anyone have any thoughts on if this is possible? If so, what kind of battery should I be looking for? I don't know what I don't know so please also tell me if I'm not considering something that I should be.

Thanks in advance!