SparkFun RedBot Sensor - Mechanical Bumper Other, Proximity, Sparkfun Originals Vitamins & Dietary Supplements one of which is to

one of which is to use it is a mini solar cell to power your project

It’s been brought to our attention that trying to program the 4D screens using an FTDI breakout can damage the driver

Lots of application notes and support on Nordic Semiconductor Website

Info Sheet

This depends a lot of what board and processor you are using with the battery pack

SparkFun RedBot Sensor - Mechanical Bumper Other, Proximity, Sparkfun Originals Vitamins & Dietary Supplements one of which is toThese simple switches are the Mechanical Bumper sensor for the SparkFun RedBot, giving you the ability to detect a collision before it really happens. This sensor works by acting as a SPST switch. When the whisker bumps into a foreign object it will make contact with a nut next to it, closing the connection and, by default, turning off the motor. By attaching these mechanical bumpers to you robot the whisker will bump something before your robot