Go to advanced search

by ActiveBanana
Sun May 10, 2015 7:20 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Adding motor controller to existing project with SPI device
Replies: 5
Views: 781

Re: Adding motor controller to existing project with SPI dev

Ok, I think I have enough open GPIO to run all three motors, I think this is looking good. One question about powering these motors. Since this project is stationary, I don't plan on using a battery pack. Instead, I was going to get a AC/DC adapter with a 12VDC 300mA output, split it, and run that i...
by ActiveBanana
Sun May 10, 2015 5:26 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Adding motor controller to existing project with SPI device
Replies: 5
Views: 781

Re: Adding motor controller to existing project with SPI dev

Hmm, thanks, this looks like a cheaper and more workable solution. You would need two Pi GPIO's per motor, and you can use joan's excellent pigpio library for PWM motor control Two pins per motor, or two pins per L9110S ? Other sensors have eaten up some of my GPIO pins, I'm sure I've got four open,...
by ActiveBanana
Sun May 10, 2015 3:36 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Adding motor controller to existing project with SPI device
Replies: 5
Views: 781

Adding motor controller to existing project with SPI device

Hello, I would like to add a motor controller to an existing raspberry pi project. I am looking to add the ability to drive three small 12VDC 200-300mA motors- three of these in fact http://www.adafruit.com/products/1150?gclid=CMeg8du6t8UCFVKAaQodNkoApg My first concern is that I'm already using SPI...
by ActiveBanana
Thu Jun 12, 2014 2:43 pm
Forum: Automation, sensing and robotics
Topic: Adding a 5v device to a A2D converter with a 3.3V reference
Replies: 9
Views: 2972

Adding a 5v device to a A2D converter with a 3.3V reference

I’ve got one 3.3V analog device on pin 0 of a MCP3008-which is using a 3.3V reference. That device operates like a variable resistor, and is working fine. I am now considering adding a second analog input, from a sensor with a 5V operating voltage. Specifically, this one: http://www.dfrobot.com/inde...
by ActiveBanana
Wed Apr 09, 2014 1:30 pm
Forum: Automation, sensing and robotics
Topic: Hydroponic Monitor
Replies: 4
Views: 4661

Hydroponic Monitor

Hello All, I am new to the RaspberryPi, but amd familiar with Linux, and have a background in computer science and engineering. My project is to create a hydroponic monitoring system. I’ve seen similar projects elsewhere online, though many seem more geared to automation. What I would like to do is ...

Go to advanced search