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Omnidrog
United Kingdom
Asked
— Edited
Hi,
I'm following the Omnibot tutorial on Instructables click here for tutorial and need to purchase the following items: 1 x EZ-B Robot Controller http://www.ez-robot.com 1 x servo for head 2 x Servos for arms 1 x Wireless Camera 1 x ARC Software 2 x Bright Blue LEDs 2 x QR111D Edge Detectors 1 x micro servo for Ping Sensor 1 x HC-SR04 Ultrasonic Ping Sensor 1 x Sparkfun TB6612FNG HBridge Motor Controller
I can see a lot of the items are included in the EZ-Robot Developers Kit. Can someone tell me which items are not included and where I can source them?
Also would it be possible to add a text to speech feature? I'm proficient in C# so the application side is fine I just need to know what hardware I require?
Thanks in advance
Dan
In the developers kit you get; 1 x EZ-B v4 WiFi Robot Controller and ABS Plastic Shell 1 x EZ-Robot EZ-B v4 Camera 1 x HC-SR04 Distance Sensor 4 x Heavy Duty Servo 2 x Continuous Rotation Servo 2 x Peripheral Cable 1 x 6xAA Battery Holder 1 x Power Shell Servo Attachments and Wheels
What you need in addition to that, if you want to copy the omnibot exactly are; 2 x QR111D Edge Detectors 1 x TB6612FNG 1 x Micro servo
However, you may want to stray from the design a little so it is pretty much up to you what you use. You could replace the TB6612FNG for an L298n based 2.5A Motor Controller if you wanted to (the TB6612FNG is fine for Omnibot though, I use one in Melvin). You could probably use the left over heavy duty servo for the ping sensor too, it'll just take up more space.
You may also require more peripheral cables depending on how far the servos are from the EZ-B. It never hurts to grab a bunch of 10 or 20 cables, you'll use them
The edge detectors could be a different type too if you can't get hold of QR111Ds.
You may also want to upgrade the battery from the 6V SLA in the Omnibot to a smaller, lighter and higher capacity LiPo battery.
Have a browse of the showcase, the Omnibot is a popular choice of robot.
Also, ARC will probably cover all of your needs so there is no need to program anything. The EZ-B V4 has an onboard speaker which will output the text to speech in ARC or the soundboard in ARC.
Thanks Rich,
Can I purchase all these items from the EZ Robot shop?
I had a look through the showcase and I can see Lumpy is adding MP3 modules, what are these used for?
Would it be possible to mount a screen where the tape deck is? I guess it would need to be powered by a small windows notebook motherboard or similar?
What battery would you recommend for longevity and to allow the Omnibot to move as fast as possible?
Thanks
Dan
To be honest you can do pretty much whatever you want with the Omnibot, it's very versatile. Melvin, while based on a Hearoid shares most of the same parts and has a serial LCD screen in the chest area, while it doesn't display windows or video etc. it does display a large range of useful information.
Some Omnibot 2000s have been altered to have LCD screens. OmniMC for instance does. But yes, it would require something on board to display on the screen... A wireless video transmitter could be used or a small on board PC etc. The space inside is the only restriction.
Most of what you need comes with the developers kit. Which, I should point out has had a major upgrade recently with the V4 EZ-B. MP3 and text to speech are on board the V4 and it uses WiFi not Bluetooth for a much more stable connection, amongst numerous other changes.
MP3 modules are for having the robot make noises, or playing back MP3s. Unless there was an onboard PC the sound would not come from the EZ-B with previous versions. The V4 changes that so it shouldn't be an issue.
What isn't in the shop on here can be found on ebay or any decent RC/robotics stockist such as Proto-Pic (TB6612FNG), Farnell (IR sensors), Robot Electronics (LCD display) etc.
I use a 5000mAh 2S LiPo battery to run Melvin and he lasts hours between charges. The 2S is 7.4v so I have a voltage regulator installed for the drive motors to limit them to 6v, he moves fast enough and the reduced size and weight of the battery has helped fit everything inside the body nicely... I would guess I could fit around 5 more batteries in too without a problem (although I have no need to).
I don't think QR111D is the correct part number, by the way. Another thread corrected the part number for the sensor:
"I believe DJ probably ment this sensor which is called the QRD1114 and is available at Solarbotics, hope that helps!" solarbotics.com/product/qrd1114/
Also, if you are looking for a UK outlet for parts check out this site I found the otherday. Price compare for sure, but with shipping it might offer a lower price to you in the UK.
www.hobbytronics.co.uk/robotics
hey guys i am new in robots world and i want to buy the EZ-Robot Developers Kit so what can i do if i buy it from this site and they didn't give me the kit
Everything is still in pre-Order ... if you buy now it may take 5-7 weeks to ship at best to ship
I looked everywhere and cant find the code to run the Omnibot, do they share the code? I followed several links that siad find the code here but they all end up at the EZ robot control page