This is the decscription of a task that requires some EE skills.
The task in question is to create and test (by breadboarding) a circuit that uses a small, through-hole photointerrupter that can be reliably read by a raspberry pi GPIO input pin (3.3v). The purpose of the circuit is to detect when an object (like a sheet of paper) passes through the photointerrupter by reading a boolean on/off signal. The circuit should be prioritized for low-power use and polling speed, if possible.
The pinout for circuit should consist of:
- Input 3.3v power
- Data read
- Ground
The specific photointerruptor sensor has been chosen for its form factor and price. If another sensor fits the form factor, accomplishes the goal of the circuit and isn't much more expensive then we can use it. Feel free to replace the sensor in that case.
- File describing the circuit design, either an image of a hand drawn graph, KiCAD design file or some other digital diagram.
- A text description of the breadboarding setup, components used and details about why the breadboard is laid out the way it is, ie - assume you're describing the circuit to a 5 year old.
Applicants may contact Schell Carl Scivally by any of the following:
- SMS at (707) 478-8679
- email at efsubenovex@gmail.com with the subject "HH sensor circuit #2"
- via keybase.
Or of course you may comment here!