Boe bot sensors

Geost

Hi!
I`m new here xD
Plz I need to know how would be the circuits for a boe-bot with a SY0A21 and with a QRD1114.
Thx 4 ur help

Mike Green

You need to supply more information. I did a web search on your two part numbers and only found the QRD1114 which is an LED / phototransistor combination. Please supply at least links to datasheets.

Look in the "What's a Microcontroller?" tutorial from Parallax. Chapter 2 covers LEDs. Chapter 3 covers pushbuttons and a phototransistor will work much like a pushbutton or other switch. In particular, the diagram on page 79 should work. Pin 2 (emitter) of the QRD1114 is the side to connect to ground (Vss) and pin 1 (collector) is the side to connect to the resistors.

www.parallax.com/StoreSearchResults/tabid/768/List/0/SortField/4/ProductID/139/Default.aspx?txtSearch=whats+a+microcontroller

Geost

Thx 4 answering Mike Green
Sorry I misswritten the first model, actually is the 2Y0A21.
Here are the datasheets.

sharp-world.com/products/device/lineup/data/pdf/datasheet/gp2y0a21yk_e.pdf

www.datasheetcatalog.org/datasheet/fairchild/QRD1114.pdf

Regards

Mike Green

The GP2Y0A21 like many of the Sharp distance sensors outputs a voltage. You'll need some kind of analog to digital converter to be able to use this. The "Basic Analog and Digital" tutorial discusses both analog to digital conversion and digital to analog conversion. The ADC0831, which is discussed in that tutorial, is a good, basic single channel analog to digital converter (ADC) that would work.