Wearable RC control 2

Decent pot arrangement. The trick is lots of hot glue & wood. A wheel would be better than a stick for steering.


Another iteration with production wood. Unfortunately, the steering stick has a finite number of gluings. There was no other way to attach it than with a giant blob of glue. The throttle stick wants to angle away from the camera, which would require a heavier piece of wood.


The functional version, without battery.



The fully proportional car electronics are finally working. Throttle is very controllable.

Steering is still very hard to control, but has some latitude where there was none before. There are basically only 2 positions you can get from the joystick: fully deflected & slightly deflected. It might improve with a lookup table instead of a linear taper. Steering might still work better with tact buttons instead of the joystick. Any change in the mane voltage would require changing the lookup table.




The bare minimum dual linear regulars seem to work flawlessly.


The H bridge hacking, with hot glue to keep to delaminated board together.

The PWM frequency for throttle is 30Hz. For steering, it's 60Hz. It seems to work well enough.

The 433Mhz 10mW RF output from the radio interferes with the PIC's internal oscillator. It increases the transmitter baud rate by a fixed amount, but increases the receiver baud rate depending on distance. The transmitter has to be a certain distance from the receiver to work. Even then, there's a certain instability in the amount it influences the transmitter baud rate, limiting it to below 9600.

Packing everything up & installing the batteries is still a big unknown.