ENGLISH (forgive the mistakes)
Despite all the following issues, we are quite amazed the hand is still working (it’s a 200 euros prototype)
The general working of the hand will depends of:
– The physical body aspect (in the morning the muscle is cold, after sport, it’s the opposite)
– The position of my arm
– If the hand is on my limb or on the table (different weight)
– Without shoes and the laptop chargor on the floor will make interferences
– If the batteries are fully charged
– If wires are not well connected
– Sweat will conduct the signal, not enough or too much.
We didn’t try the 3 movements because not enough time to write the program.
We didn’t put the LED indicator of position
– Socket issues:
Pain on the inside bone of the elbow
The scratch on the arm does a tourniquet effect (garrot)
Too much sweat makes slip the socket, the arm is not anymore in front of the sensors
– Muscle contact
After about 30min of use, problem to control the hand because of a sore socket or too much wet (the weather was very hot too)
It was impossible to control the hand because of a sore elbow or sweat
There was a problem with the upholstery nails used as sensors. It could not conduct the muscle contraction, although, when we touched it with our fingers it conducted the signal. We decided to use the patch again instead so I could have a free depilation
– Batteries
We changed the 9V battery during the week end (used for the -5v of the sensor)
We changed 1 LR6 battery out of 5 every 2 hours.
-Muscle Sensors
It was easier to set up the sensors thanks to the program made on Processing by Thomas Meghe. Xe would see the intensity of the contraction on the screen, so, we could easily know if it was a human or hardware problem we had to resolve. There is a little screw on the sensor V3 that you turn 360 degres for a min to max amplification
August 2014
FRANCAIS
Malgré tous les problèmes rencontrés, nous sommes bien étonné que la main fonctionne toujours (ce prototype à couté 200 euros)
les éléments à prendre en compte sont les suivants:
Au bout d’environ 30 min d’utilisation, problème pour contrôler la main due aux problèmes cité précédemment. (Douleur, transpiration)
Bionicohand 