360 Degree sonar. Proof of concept.
First thing first.
This is just a quick and dirty attempt to improve the 360 degree sonar idea. I have seen some of the designs at LMR with a 3,5mm jack plug and wires that goes around the servo and enters the sonar at the top. This is a good idea, but there are at least two things that can be improved.
1. The wires to the sonar will obstruckt the sonars view.
2. It takes a lot of space on top of the sonar to fit the plug and route the wires.
Now, what do you need?
- 1 continues rotation servo or motor.
- 1 Jack plug.
- 1 Jack socket.
- 2 Gears that fits the bill.
- Some superglue and tape
- Maybe a drill.
What i did:
-Glued one of the gears to the top of the servo output shaft (The small gear)
-Drilled (Thats a lie.) a hole so the jack-plug could be placed in the middle of the large gear and secured it with a drop of superglue.
-Fittet the gear and plug into the jack-socket.
-Placed the socket so that the gears fitted together and the socket was flush with the servo.
-Secured the socket to servo using superglue.
-Soldered on two led`s with common ground and the two V+ on the other "pins"
Connected wires to the socket.
-Made a smal PicAxe program that runs the servo and flashes the leds.
You wil see in the first video that there are some minior glitches in the blinking. Found out that its beacase the plug had some uneven parts but it fixed it self after running for five min. when the socket had filed away those inpurities.
-Use a regular servo and gear it up like ignoblegnome suggested here.
-Use a ordinary motor or stepper with encoders so you can get position reference as well.