Donkey is a self-driving car platform meant to convert RC cars into autonomous ones. It’s a self-driving library written in Python. Its Open Source hardware allows anyone, including myself, to build their own car! This project was created by Sanjhee Gupta in association with Berbawy Makers. Sanjhee is an ambitious high school senior who plans […]
Use a TensorFlow SSD MobileNetV2 DNN on the Raspberry Pi plus Pi Camera to build an autonomous car capable of object detection. Story This project will show how to transform a (Raspberry Pi + Pi Camera ) powered RC car into one capable of object detection and autonomous driving. To do this we will deploy
Autonomous Driving AI for Donkey Car Garbage Collector Read More »
Bi-polar stepping motors use only two coils and are easily recognized because they only have four wires. Most unipolar steppers can be used in bipolar mode by ignoring the two centre taps. Because bi-polar stepping motors produce the rotating magnetic field by reversing the current in both coils, controlling them is much more complicated than
Driving a bi-polar stepper motor with the SN754410NE double H-bridge and a Raspberry Pi Read More »
I have experimented with GPIO on the Raspberry Pi, just turning an LED on and off here. But since then Ben Croston has improved the RPi GPIO Python library to do most of the work in C and I can confirm that it is a lot faster. Driving servo motors requires precise timing, so I
Raspberry Pi GPIO driving Servo Read More »
In my last instructable, I covered how to run a shift register using a Raspberry Pi, and kind of hinted that one thing you could do with it is run an HD44780 based display. That’s what this instructable will cover. This instructable is also the third one in a series leading up to my long
Driving an HD44780 Display using a Shift Register and a Raspberry Pi Read More »
There’s something exciting about crossing the boundary between the abstract world of software and the physical ‘real world’, and a relay driven from a GPIO pin seemed like a good example of this. Although a simple project, I still learned some new things about the Raspberry Pi while doing it. There are only four components
Raspberry Pi – Driving a Relay using GPIO Read More »
The max7219 lets us control lots and lots of LEDs using just a few Raspberry Pi pin-outs. No hassles with multiplexing, latching, refreshing or using up all your outputs – it handles everything for us. We just send commands to the max7219 and we can control up to 64 LEDs or eight seven (8 including
Driving the Max7219 with the Raspberry Pi Read More »
This is a small project I did for a colleague who is building a 1/48 scale RC model of a Fletcher class Destroyer (yup…that makes the “model” about 8 feet long!) He asked if I could animate the 5 x MKIII 5″/38 gun turrets, complete with bearing and elevation, and also being able to individually
Raspberry Web server sending GET data to Arduino Nano driving 6 servos Read More »
This post will be the first of a series of posts that will describe how to drive a 7-segment display from a Raspberry Pi, without any OS running in it. Today, I will talk about some important characteristics about 7-segment displays, how to wire things up, and another considerations that you ought to take into
Driving a 7-segment display with a Raspberry Pi (I) Read More »
Stepper motors are versatile devices that allow precise and repeatable angular control. They are used in disk drives, translation tables, and 3D printers to name just a few applications. They typically come with two different wiring arrangements. The most common arrangement is four wires that are connected to two coils. This is called a bipolar
Driving a Unipolar Stepper Motor with a ppDAQC Pi Plate Read More »
