Otto DIY+ Arduino Bluetooth Robot Easy to 3D Print

Visit www.ottodiy.com

Otto DIY + would be the improved and advanced version of original #OttoDIY, the idea is to have the same base features DIY robot + Bluetooth control and programming + metal gear servo motors + optional rechargeable + changing modes by touch sensors + sound sensor + RGB light + other outputs +...?

Otto DIY + ("orange head")

The exciting part is that we are doing open development with makers and hackers around the world so we are open to ideas, not only from expert,s you can join us with , feedback, social share, testing or any other contribution that you might think of.

Otto DIY+ (orange), IR and mood lights optional

in the following pictures you can have a reference of how to build Otto DIY+

1 / 15 • Otto DIY+ instruction manual

or follow @Alex Glow Live build video!

Possibilities:

• Noise detector
• LED nose
• LED matrix mouth
• Arms
• wheels
• Infrared control
• change Arduino main board for ESP 8266 or ESP32 or Wemos D1 mini
• raspberry PI
• Laser cut version
• Customizable face and parts
• paper craft, cube craft and accessories

ready to start to play with the APP!

Baud-rate for programming module is 9600 or 19200 or 38400, depends on a module. and the code you are using

The BT code for our APP has 9600 baud-rate so BT module must match that speed to be able to communicate with Arduino Nano via serial interface(UART) .

1 / 3 • connect Bluetooth ONLY after the APP.ino sketch code has ben uploaded to Arduino

Main Code:

Upload this code with the Bluetooth module disconnected

https://wikifactory.com/+OttoDIY/otto-diy-plus

After successful upload connect the Bluetooth module and it will be ready for pairing

Android APP:

Download the latest .APK for Android smartphones or tablets here.

For Apple here

using app inventor by MIT use our template to modify and create your own mobile application

If the APP didn't work is probably because the Bluetooth module came with a baud rate different to 9600bpm so you need to setup

For HC-06: Generally comes with 38400bpm so no need to setup (mostly)

For HC-06 BT module things are a little simpler because module is always in AT command mode when not connected to anything. But the downside is that HC-06 module cannot be used to upload sketches to Arduino because it doesn't have reset. For configuring the module

1. upload this sketch HC06_BT_config.ino to your Nano

2. disconnect USB

3. connect BT module to Nano like this:

4. Power on your Nano and after about 10-15 seconds everything should be finished and your BT should be configured (LED13 should start blinking).

If any problem check this instructables:

https://www.instructables.com/id/Tutorial-Using-HC06-Bluetooth-to-Serial-Wireless-U/

http://www.martyncurrey.com/arduino-and-hc-06-zs-040/

http://www.martyncurrey.com/bluetooth-modules/

just have patience with the cables they will fit

For HC-05: Generally comes with 38400bpm

1. Upload the sketch HC05_BT_config.ino to your Nano first, then disconnect Nano from USB.

2. Now connect BT to Nano as shown in diagram but do not connect VCC.

3. Plug in the USB to Nano and then connect VCC so BT enters AT mode. LED on BT should start to blink slower, about once every 2 seconds. (If this doesn't work, try holding the button on BT module while connecting VCC).

Open serial monitor in IDE, set baud-rate to 9600 and line ending to Both NL & CR.

Type AT then press enter; (if everything is right, BT should respond with OK and then enter following commands:

AT+NAME=Zowi "setting the name"

AT+PSWD=1234 "pairing password"

AT+UART=115200,1,0 "baud rate"

AT+POLAR=1,0 "enabling STATE pin to be used as reset for programming arduino over BT"

If any problem check this instructable of how to Modify the HC-05 Bluetooth Module Defaults Using AT Commands

Programming

The easiest to code your own Otto is by using one of our Scratch based software extension or Arduino Blocks; graphical programming interface in Arduino mode.

watch these simple tutorial to learn how to install the OttoDIY extension blocks

So at this point you should have an Otto DIY+ 3D printed and completely assembled

Now some basic programming with Arduino:

1 / 11 • arduino programming with Otto DIY+

Post your remix and modifications in the Otto builder community .