The big issue with FPV, and the reason it stayed on analog tech for so long is because of latency. How is the latency for this project?
Show HN: ESP32 RC Cars
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Re: Show HN: ESP32 RC Cars
#22The big issue with FPV, and the reason it stayed on analog tech for so long is because of latency. How is the latency for this project?
FPV today is largely using ExpressLRS[0], an open protocol for running FPV quads' control links (also using esp32 usually)
Video for FPV quads on the other hand is divided: some use analog (mostly because when you lose signal, it's a gradual loss rather than complete loss + a reconnection process), while others use 802.11-based communication which is actually quite competitive. Walksnail Goggles for example use 802.11 for their video links, although not super open/documented people do dig into how it works (see Chris Rosser's work.) Latency is good enough with such setups for fast-paced competitive quad racing, at least
Re: Show HN: ESP32 RC Cars
#23The big issue with FPV, and the reason it stayed on analog tech for so long is because of latency. How is the latency for this project?
FPV today is largely using ExpressLRS[0], an open protocol for running FPV quads' control links (also using esp32 usually) Video for FPV quads on the other hand is divided: some use analog (mostly because when you lose signal, it's a gradual loss rather than complete loss + a reconnection process), while others use 802.11-based communication which is actually quite competitive. Walksnail Goggles for example use 802.1…
I will add for those who haven't tried these, as it usually doesn't come across in verbal comparisons:
Digital FPV (like DJI's system) looks vastly better than analog. I think the best comparison is: Digital looks like a modern movie, youtube video etc, and analog looks like CCTV footage from the 80s.
I will also clarify on ELRS: It uses ESP32, but it is a thin wrapper around Semtech LoRa (~915Mhz and 2.4Ghz) SX128x and SX126x chips, which are doing the heavy lifting.
Re: Show HN: ESP32 RC Cars
#24This is amazing! Is there a way to make the car recharge at dock like robo vacuums?
This is exactly what im needing as well, I would like to make something like this and integrate it into home assistant but haven't had time yet
Re: Show HN: ESP32 RC Cars
#25before you get a ESP32 CAM (I love em) consider one with an external antenna
it may be wise to read this https://www.reddit.com/r/esp32/comments/r7kqtt/esp32cam_supe...
I got fairly bad frame rate until I tried some of the advise
Re: Show HN: ESP32 RC Cars
#26I want to make this with my kid but I can’t find the actual hardware as seen. Are those printed parts? Also the wheels and foam. Where would I go about sourcing these parts?
Re: Show HN: ESP32 RC Cars
#27What are the battery requirements for such feed combo (RC + FPV + servo)? From experience, how does this translate to play time?
Re: Show HN: ESP32 RC Cars
#28The big issue with FPV, and the reason it stayed on analog tech for so long is because of latency. How is the latency for this project?
FPV today is largely using ExpressLRS[0], an open protocol for running FPV quads' control links (also using esp32 usually) Video for FPV quads on the other hand is divided: some use analog (mostly because when you lose signal, it's a gradual loss rather than complete loss + a reconnection process), while others use 802.11-based communication which is actually quite competitive. Walksnail Goggles for example use 802.1…
Walksnail is not 802.11 based. If anything it is loosely 802.16 based. Likewise DJI OcuSync is more like LTE than anything else.
802.11 is not a good fit for FPV video and trying to use it has held non-proprietary-Chinese video systems back quite a lot.
Re: Show HN: ESP32 RC Cars
#29Sweet, now I can build the RC car from Watch Dogs 2.
Re: Show HN: ESP32 RC Cars
#30Sweet, now I can build the RC car from Watch Dogs 2.
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