perhapsleiana
Elite member
So I ordered a strange thing. It's an RC truck built really cheaply (I like fixing things so that's the idea) but it has 4 independent motors, one on each wheel, and it uses mecanum wheels- wheels with diagonal rollers that allow it to move sideways, do zero-radius turns, all the benefits of omnidirectional movement.
It runs on a 2S connected by Deans, and I plan on replacing its pair of 18650s with a 5000mAh 20C hardcase 2S for those long run times.
the thing is, I hate that body, and I plan to put an Arduino robot arm on it anyway. The end goal (besides having fun) is to have a robot capable of entering COVID biohazard zones, sanitize things, manipulate small objects, and return to be sanitized.
I hope to have the main operational controls and some telemetry go over a 433Mhz radio link (HC-12 pair, TTL Serial) and use an Arduino onboard to handle the serial data system, controlling the arm, the drive base, and anything else I might want to add, such as hazard sensors, and other things. On the control station end would be a PC, connected to the operator-side wireless serial module through a USB adapter.
The remaining part of the system design is the AV system. Two-way would be nice, but also low latency would be nice. There could be separate systems for each. Use a phone on wifi or cellular data over a video calling service for two-way AV, but then the latency would make the robot inoperable. However, with a second camera designed for FPV, things become plenty operable again.
What would be a cheap system with latency under 75ms to have an FPV camera send video to a PC? I see USB receivers but they aren't cheap, and I don't know too much in the field.
It runs on a 2S connected by Deans, and I plan on replacing its pair of 18650s with a 5000mAh 20C hardcase 2S for those long run times.
the thing is, I hate that body, and I plan to put an Arduino robot arm on it anyway. The end goal (besides having fun) is to have a robot capable of entering COVID biohazard zones, sanitize things, manipulate small objects, and return to be sanitized.
I hope to have the main operational controls and some telemetry go over a 433Mhz radio link (HC-12 pair, TTL Serial) and use an Arduino onboard to handle the serial data system, controlling the arm, the drive base, and anything else I might want to add, such as hazard sensors, and other things. On the control station end would be a PC, connected to the operator-side wireless serial module through a USB adapter.
The remaining part of the system design is the AV system. Two-way would be nice, but also low latency would be nice. There could be separate systems for each. Use a phone on wifi or cellular data over a video calling service for two-way AV, but then the latency would make the robot inoperable. However, with a second camera designed for FPV, things become plenty operable again.
What would be a cheap system with latency under 75ms to have an FPV camera send video to a PC? I see USB receivers but they aren't cheap, and I don't know too much in the field.