The soft continuum robots are the miniturised STIFF-FLOP manipulator, which is devised for minimally invasive surgery and made of a highly deformable elastomer with a fluidic-driven principle. The robot has individually reinforced circular chambers. Braided in-extensible threads constrain the radial inflation while allowing longitudinal expansion under pressurisation. In this way, the pressurisation does not change the shape and perimeter of all actuation chambers and the strain in the circumferential direction of the reinforcement layer is negligible. We are developing to use FlowIO to actuate the continuum robots to have a portable system. Fabrication process of the robot The following information is detailed in https://ieeexplore.ieee.org/abstract/document/9762157 (a) Moulds assembly: One set of chamber moulds is comprised of an inner core and two identical slide parts. In-extensible thread is manually wound around the assembled chamber moulds before assembling all moulds. (b) Silicone curing: after pouring the silicone (EcoFlex 0050, Smooth On) into the moulds, the assembled chamber moulds are slid out once the silicone completely cures. In this way, the thread is partially embedded in the body of the robot. A thinner chamber mould is then inserted and cast into the inner side of the chamber, which fully integrates the thread into the silicone body. The next step is to seal the bottom and top of the robot using a harder silicone (DragonSkin 0030, Smooth On). Finally, the pneumatic pipes can be connected to the chambers via reserved holes. (c) Demoulding and finalising the robot: The last step is to attach connection plates to the fully demoulded robot. https://www.youtube.com/watch?v=YeevxjQWxMQ

I'm trying to access the GUI to use the FlowIO, but it shows that I don't have permissions to access the page ( see image below - although it was working before?). Has the page moved or this isn't open source anymore? Would be grateful it this could be clarified. Many thanks

When I combined the main PCB and the Adafruit Feather, the module will not power up when it's connected to the battery through the main PCB, but it can be powered by USB connection to the Adafruit Feather. This leads me to narrow down the problem to the main PCB. LED DID NOT LIGHT UP WHEN CONNECTED TO BATTERY First I checked the battery. 3.9 V, normal. Then I visually trace the power from the battery to all the components that it's connected to. First, the ON/OFF MOSFET. Referencing the specifications sheets, the functionality of the MOSFET was checked. It's working as expected. Then, the 3.3 V voltage regulator. Again, check its performance against the specifications sheet. This component was not producing any output, despite being told to turn it on. That means that this component is faulty and needs a replacement. While replacing the voltage regulator, I accidentally ripped the threads by pulling the voltage regulator before the solder is fully melted. Ripped threads are difficult to fix and require someone with sufficient experience and steady hands. I found a friend who's more experienced in electronics, and he soldered a jumper wire connection with some thin magnet coil wires (orange wires in picture). After replacing the voltage regulator and fixing the ripped thread, the combined module with Adafruit Feather is still not turning on. I consulted the schematic of the main module PCB (provided by Ali) to further troubleshoot. After following the power source to Adafruit Feather (turns out the Adafruit Feather is powered directly via BATT) and visually inspected using a microscope, there were traces of copper near where the battery connector on the Adafruit Feather used to be. The ground threads on the battery connector were also ripped during the removal of the battery connector, but it was hard to notice. Again, using the jumper wire strategy, the ripped thread was fixed. After both of these fixed, the combined module now powers with battery and the LED indicator turns on when the ON button is pressed.