To keep the shipping costs low, the robot must fulfil the following requirements:
Length: 14 to 60cm
Width: 9 to 60cm
Length+Width+Height: no more than 90cm
Weight: 450g (500g including envelope)
In the target area, the habitants must provide:
1.) 4-5 AA rechargeable batteries
2.) Internet connection (WLAN or mobile phone)
With the small dimensions, it is not for rough terrain, thus the robot will be better for indoor than outdoor mission targets, but let's see how it performs...
For a larger robot or one with batteries included, the weight could be 1000g (double weight=double shipping costs)
The computing unit will be a Raspberry Pi Zero WLAN, thus Internet connection can go through USB, WLAN or Bluetooth.
To keep weight low, the chassis can be 3D printed.
Test drive my robots in my www.RoboSpatium.de.