All Commercially Available Parts
There are no custom parts, and all parts can be found on the major commercial websites and then some. I’ve done my best to keep soldering to a minimum and only use through hole components for ease of assembly and not requiring any expensive tools or more than basic technical skills. This way, anybody with $50USD can build a basic robot that can be customized and added according to their tastes and skill level. This isn’t an over simplified toy that you can’t really do much with, but a basic robot that you can modify it through adding devices and by altering it’s code.
Through hardware and coding, this robot will have many advanced features such as encoders, a range finder, monitoring and updating via wifi, have it’s own webserver, battery management, having a lot of I/O pins and programming space. It’s all possible due to inexpensive parts and using two popular microcontrollers that compliment each other quite well, in my opinion.
Argh! Brains! Argh!
I know it’s not October any longer, but I couldn’t resist. The robot will not be lacking for computing power, though. One is an Arduino Uno, which uses a robust atmel single chip computer and the other is a WeMos Mini Pro that uses an ESP822-12 board that has built in wife. Both can use sketches made on Arduino IDE, which is a plus. They each have their strengths and weaknesses, but together they make for a very robust package.
The main strengths of the Arduino is the amount and types of I/O pins that provide digital, I2C, analog, PWM and more through it’s onboard firmware that is built in, and a decent microprocessor that is fairly quick at 16Mhz. It’s only real weaknesses are the amount of programming space, which is limited to 32K and that isn’t bad, since you can pick up a good clone for about $10USD.
Where the Arduino Uno style boards lack memory, the ESP8266-12 based microcontrollers more than make up for it, with 4 or more MB of memory and being Wi-Fi enabled, but most of it’s I/O pins are digital, with one PWM and an analog pin, which makes it’s an awesome board for IoT and such.
Looking at IoT sites is where I came up with the idea of using an ESP8266 based board to to monitor and control the robot with. Once I started playing with it, I realized that it had way more potential that I had first thought. At 60Mhz and have 4MB it’s going to run circles around the Arduino and will have higher level duties such as webserver, host any artificial neural networks, data logging, and host any large files such as maps, etc.,.
A Pic of the Robot sans wires
Waiting on a delivery of Dupont style connectors to wire up the sensors, etc. Will be soldering the headers for the WeMos on the shield this weekend.