5 π Connect Wires
"Everything is connected." π€
Last updated
Was this helpful?
"Everything is connected." π€
Last updated
Was this helpful?
Nybble's servos are connected to NyBoard's PWM pins symmetrically and resembles the nerves along the spinal cord. Though Nybble doesn't have shoulder roll DoF, those indexes(4~7) are reserved for the full OpenCat framework.
Use h for head, t for tail, r for shoulder roll joint, s for shoulder pitch joint, k for knee joint, F for front, H for hind, L for left, R for right, the full joints map of OpenCat is:
Observe the indexing pattern to connect servos with correct PWM pins. Be careful with the wiresβ direction. The brown wire of servo is GND, while the GND on NyBoard V0_1 are along the centerline. On NyBoard V0_2 they are opposite.
A quick check is that all On NyBoard V0_1 the brown wires should be far away from the board surface. On NyBoard V0_2 the brown wires should be close to the board surface.
For NyBoard V0_2, the location of servo wires will still be the same, but their direction of colors will be opposite
After calibration, troubleshooting and final assembling, Itβs time to think about wiring routes to make Nybble look neat. There are multiple slots on the frame designed as wire organizer. Feel free to develop your own style for connecting future accessories. Make sure the wires doesnβt get in the way of servosβ movement.
Below is my wiring routes.
If you have not already, plug in the 4 pin cable, make a note of which cable colors are attached to which signals. When looking into Nybbleβs eyes, the connections from left to right are:
VCC
Trigger
Echo
Ground
Connect the other end of the cable to the header you soldered in place earlier in assembly. Use the following mapping
Sensor Side
NyBoard Side
Vcc
D8
Trigger
D9
Echo
D10
GND
GND
