The FlowPaw goes wireless using the Bluetooth Claw!

Here we are using a LynxMotion Rover controlled from two servo outputs on the FlowPaw board and some Infrared distances sensors to detect objects.

All of the decisions and control are coming from the PC using the FlowStone STEM programming language.

The samples of the new packaging have arrived – how exciting:

Also in the box will be a CD with the FlowStone STEM software and Example files etc. Plus a quick start guide etc.

FlowPaw is working really well now so we thought we would make a in depth video showing you how it works with FlowStone and how easy it is to program:

So after a few days of low-level programming the Firmware for the FlowPaw board we finally have it working working with FlowStone!

Here a little video:

Here’s the FlowPaw Rev0 with four Claws fitted!

In this case a buzzer, a LED display, a capacitive touch sensor and an infrared proximity sensor.

The board spec was:

• USB 2 HID interface
• 4 Mikro Bus Claws
• 4 x Coloured LED’s
• 4 x Push Buttons
• 8 x RC Servo outs (with external power option)
• 16 Digital Ins
• 16 Digital Out
• 4 x 12 Bit Analogue Ins
• Reset Button
• Powerful ARM Cortex 4 Microprocessor

The design was worked out with MikroElektonika and within a matter of weeks the first prototype boards were on our desk!

Since ‘Bear Paw’ was already used to describe lot’s of other products and that this would be designed to work with the FlowStone Programming Language we decided on FlowPaw and here it is:

Following on from the Hand idea we decided that a Paw would be better, a Bears Paw with Claws!

Then came the idea of making it into a Hand with fingers and calling it H&:

One product we tested was called the PIC Clicker from Mikroelektonika (renowned producer of compilers, development boards, debuggers and books).

This was an initiative USB interface board a bit like an Arduino but with a PIC microprocessor chip on-board and a special socket call a Mikro Bus Socket that would accept a huge range of sensors and displays etc.

Using the Mikro Bus sockets we could attach various sensors and displays controllers to the PIC Clicker board :

Things like: LED displays, temperature sensors, motor controllers, proximity sensors, RFID readers, speech recognition, accelerometers, gyros, light detectors, buzzers  etc. etc.  a world of possibilities.

We programmed this little PIC Clicker board to work with FlowStone, our programming language, and a range of the Mikro bus Click boards an idea was born!

What if we could connect more then one Click board at the same time?

So the creative process began:

Version 1 – 3  Mikro Bus Sockets (code name phFingers)

Version 2 – More IO, Buttons, RC Servos outs etc. (phFingers 2)

There is so much electronics hardware out there it’s overwhelming and one thing we had noticed at DSPRobotics is that most of it is designed by engineers for engineers! Meaning  it is over complicated, difficult to use,  hard to program, and on most cases aimed at adults even if they said it is suitable for children or students.

We have tested most of it, and even written an abundance of magazine articles about how to program it, the truth is it’s all really hard! We wanted to make things simple and easy to learn yet have the ability to expand and grow with it.

Examples:

Raspberry Pi

Raspberry Pi – Single Board Computer

Raspberry Pi is great if you don’t have a computer already but remember you will need an HDMI Monitor, Keyboard, Mouse, Power Supply, SD Card etc. Which adds to the cost plus it runs Linux which you may not be familiar with?

You can run Scratch and Python on it (which you can also run on any PC) but if you want to interface to the outside world for Physical Computing & Robotics:  it suddenly gets complicated, you need to know  about electronics, protocols, and read lots of chip datasheets: ie.  Voltage & Current Levels, I2C, SPI, GPIO addressing etc. In fact all of this stuff was exactly the same on FlowPaw only we have done it already for you so it just works out of the box!

Arduino

Arduino Uno – Microprocessor Board

The Arduino boards are simple microprocessor boards with a processor chip that you can program using the Arduino programming language which is a bit like C++.

These are great if you want to make an LED flash on and off, but if you want to do anything more complicated you are back in the realms of needing to know a lot about low level programming, electronics, protocols and data sheets. Also you have to write your program in a text editor then download it into the chip , if it doesn’t work first time you have no way of knowing why? You have to go back to your text based code and try and figure it out, in contrast  FlowStone runs in real time as you program you get to see the numbers changing and your code at work, making it easier and quicker to develop.

This is where we came up with the FlowPaw concept: a Hardware + Software combination!

Here’s what programming in FlowStone looks like.

It is the best of both worlds, FlowPaw connects directly to your PC via USB, it’s plug and play, no external power is need. It has a microchip on board, only far more powerful than the Arduino, however we have done the low level chip programming for you so it just works! Then you can control the board using FlowStone which is a joy to use as it combines both Graphical Programming and code based programming all in the same elegant development environment allowing you to grow at your own pace.