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Rad-daddio posted:I was gonna ask what the best coding language is for embedded systems. It's come down to C and C++, but it seems like everyone who uses C thinks it's the best due to it's ability to be used on more microcontrollers and it's lower use of resources. But everyone else says C++ is the way to go since C is old and obsoleted. The C language book is less than 300 pages. You can start there and then plow ahead into C++. The C++ book is 1376 pages e: Since the languages are so closely related it's sort of a false dichotomy to say you should only learn one of them.
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Aug 9, 2019 23:01
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Splode posted:Short answer, is there is currently a holy war over this question. Yeah I was worried about getting flamed with my previous post but C foreverrrrr
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Aug 10, 2019 04:25
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Splode posted:it's not too bad, just put off learning pointers for as long as you can and I'd go so far as to say it's pretty easy. it's a lot more readable than gcode Pointers really aren't that bad after everyone warns you they're hard to understand
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Aug 10, 2019 14:10
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Oct 26, 2019 01:26
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mobby_6kl posted:What kind of mic/amp setup would y'all recommend to pick up normal conversation or TV level sound in a room? I tried a MEMS as well as electret mic like this one below, supposedly MAX4466 based, but neither can pick up poo poo. I've been testing with a frequency generator on the phone and have to crank up the gain to the max as well as the volume to the point it's unpleasant for it to pick anything up from like 10cm. I'm not trying to make an Alexa, just need to do FFT on the signal. Did you already rule out mic arrays like this: https://www.seeedstudio.com/ReSpeaker-Mic-Array-v2-0.html
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Jan 8, 2020 21:57
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mobby_6kl posted:Do you mean a compete module like this or DIYing something? Either way it seems like it'd be overkill for what I need. But maybe I'm overestimating what's possible with a single electret mic... I'm not an expert and I haven't done anything in this space, I'm just confused that you're not doing anything like Alexa but you want to receive voices from across the room
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Jan 9, 2020 02:13
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power crystals posted:Is there a recommended board/micro for something that can do USB host, including enumerating devices through hubs (which it seems like basically everything has a disclaimer including lack of support for)? Ideally something cheaper than a full on Teensy 4 or similar. The RP2040 claims to have host support, but the only things I can see describing it is adafruit managing to fake it by bitbanging its IO pins (which would work, I guess, but I'm hoping there's something more native) which seems to contradict the statement that it has host support native. This would just be for HID or other very slow devices so USB 1.1 max speed is fine. A single USB controller that does both/OTG is also fine, I don't need it to be a client. 5V native IO preferred for the rest of the circuit but I can use shifters if that makes the USB side easier. I came across this project recently that interfaces modern usb controllers with old sega saturn consoles by using an arduino + usb host shield. I don't know how robust, available, or affordable the usb host shield is, but it looks like it has a decent software library. https://docs.arduino.cc/retired/shields/arduino-usb-host-shield
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Oct 5, 2023 16:11
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