Her site (I think of the store as a “her” so, that’s the pronoun I’ll use here) promotes education and creativity in the field of electronics especially for women, young people and artists. However, it appeals to me a great deal too and I’m not in any of those categories.
One time, I ordered a bunch of parts from her and after putting them in the robot, I thought one of them was defective. I posted on her “help” page with info about the problem. She handled my case very politely and sent a replacement part free of charge. A couple days later, I found out I WAS WRONG! The part wasn’t broken at all! Maybe I’ll send a couple of customers her way and make up for the money she lost…
Whenever I need a part, I’ll always check Ada first and if it’s on her site, I’ll buy it from her – no doubt.
This is a partial parts list for making a R1 robot. There are some small electronic components like resistors and capacitors that are not on the list because I got them from my preexisting supplies. There are also some hardware store components like electrical tape missing. However, this list has the main components.
Of course, a bunch of tools are needed (including a soldering iron). A digital multimeter is highly recommended. Continue reading →
Here’s a pictorial schematic I put together while waiting for the first batch of parts to arrive. It covers the components of the lower deck very well. The 5V is now 5.5V and the 6V is now 7V. Also, the nunchuk stuff is no longer used. Continue reading →
Hi, my name is Ralph. Welcome to ralphsrobots.com!
In March 2012, I built a hobby robot named R1. R1’s picture is on the right side of this blog’s header.
Originally, I wanted to investigate precision motion and equip R1 with a pen attachment that could write/draw on poster paper on the floor. After the robot was up and running, however, I realized the robot was not going to achieve that kind of precision.
Now the goal for R1 is to have it:
Autonomously explore the area you put it down in.
Generate a map of the floor plan.
Be able to locate itself within the map.
Go to a user-selected place in its environment by plotting a course that avoids “known” obstacles.
Go around newly discovered obstacles while en route.
I’m writing this blog because I want to share the experience with you! Specifically, the goals of this blog are to:
Describe what R1 is.
Explain how it works.
Explain how to build one for yourself.
Publish parts lists, schematics and all the computer code for making R1. That is, make R1 an “open source” project.
Provide links to resources around the web that I’ve found useful.
As the project continues to evolve, here are a few things that may happen:
Design a new robot based on lessons learned from R1. Perhaps its name will be R2.
Make R2 available as a kit that I can sell online for a modest profit.
Get some of you involved making improvements/options for these robots and sharing them online. For example: a grasping attachment or arm, camera, voice response etc.