Some more programming done, see video HEAND_2: Random movements of the hand, touch sensor (integrated in its head), changing eye color when touched.
Testing the IR compound eye and the RGB LED eyes, see video HEAND_1. Next step is to program the touch sensor and multi color pattern for the LED eyes.
I am working since two months on this table top robot. It displays a 2 DOF head with 2 full color RGB LED eyes and a 8 DOF robot hand (6 DOF hand and 2 DOF wrist), hence the fancy name H.E.A.N.D. As it is a table top robot, I have no issues with batteries - I simply use a regulated S-100-5 5 V/20 A power supply, which costs 52 RMB (~8.2 USD) on Chinese ebay called taobao. The robot is equipped with following sensors:
- Sound sensor (based on LM358 or LM386)
- Touch sensor (a metal plate hidden in its head, all PICAXE M2 parts plus the 28X2 and 40X2 support touch sensors)
- Dagu IR compound eye
- Gas sensor MQ-3 (alcohols)
- Color sensor (TCS230-DB)
- Temperature sensor (DS 18B20)
H.E.A.N.D.'s tasks are so far:
- Object tracking (hardware built, coding done)
- Reacting on touch by changing eye color (RGB LED eyes as described here)
- Speech (using a SOMO-14D if I get it working on a Windows 7, 64 bit. Can't even access the website with most VPN connections from China or download any software!!!)
- Color sensing and speech output
- Gas sensing and speech output
- Building a personality according to its experiences and pre-set thresholds
- Hand gestures
- Playing Rock-paper-scissors (recognition by color cards?)
Here are some images of the built...
Fig. 1 Hand back view
Fig. 2 Side view of the hand
Fig. 3 Front view of the hand
Fig. 4 Details of the hand. The fingers are made from Ø 10 x 2 mm silicone hose, plastic stand-offs, 1.5 mm aluminium sheet, Ø 0.5 mm fishing line, pushed and pulled by luster terminal inserts, mounted on the servo horns. The servos are digital ones with metal gear, turning 360 °, approx double price of standard 9g micro servos and a few milimeters smaller (normally used for helicopters)
Fig. 5 Construction of the head
Fig. 6 Full color RGB LED eyes construction
Fig. 7 Mechanical setup nearly finished
Fig. 8 Three mini ball castors supporting the turn able wrist
Fig. 9 Aye-Aye Sir! Your wish is my command!