Skip navigation
Hi Everyone this is udhay ,I am in my B.Tech Final Semester.I am sorry that i started late , but hope that i would be finishing my Task on time . I am very Happy to see my peers already Started working to great extent and their blogs are kind of guidance or templates about how i post my work . So What my Project is all About: It all Started with Problem: In our area i have seen empty fields turning into dump yards filled predominantly with plastic wastes and is getting difficult for the muni ...
This blog gives the unboxing and review of the Sixth Sense Design Challenge Kit     Blog Series Project ARORA #1: Introduction Project ARORA #2: Sixth Sense Design Challenge Kit Unboxing   About the challenge Sixth Sense Design Challenge ...
A recent incident that occurred in Thailand caused 13 people getting trapped in a cave. Earlier, natural disasters have caused a lot of devastation resulting in tremendous damage to person and property. Due to the accumulated heap of landmass spread over a large area after the flood, it was difficult to carry out the search and rescue operations or navigate manually. This led to numerous loss of lives because of the unavailability of emergency support. The ever-increasing number of fateful incid ...
I need to get the detailed mechanical design properly underway to ensure I haven't forgotten to order some critical parts. This blog covers design of the wheels and motor mounts. This video animates some of the CAD models to show their detail: The steering and drive mechanism is pretty complex as the steering wheel is also the drive wheel. The drive motor mount has a steering post on it to allow the steering motor to control direction of the drive motor. This motor housing has a very compl ...
I finally have all four custom PCBs designed and on order so I can spend some time describing the system a bit better. The diagram below shows how all the electrical subsystems are connected in the GraffitiBot. Although this is a busy diagram with lots of subsystems, there are just as many sensors on the Sensor Tile itself which are not broken out on the diagram. There are 2 batteries - one will power the pumps and drive motors, the other one will power the rest of the electronics. The key ...
Reality struck. despite its 'formidable' looking track, my chasis cannot move properly on the grass. The video shows that it struggle to move on my garden grass. The motor driver is a ST L298 based motor driver. It is dual channel but limited to 2A per channel. As one can see on the video, my power supply is also running into the >2A range and sometimes overload.   One way to solve this is to make use of current capable motor driver. I am right now evaluating the option. i do want to ...
    Some component testing.....   Electronic Interfaces This blog describes the interface for all of the GraffitiBot sensors and actuators. The GraffitiBot beast includes 18 sensors, 10 motors, a mSD card, an LCD, a Bluetooth radio, a capacitive keypad, and 2 Cortex M4 MCUs. The capacitive keypad actually boosts the number of sensors to 30. Sensors: The STMicroelectronics Sensor Tile has a whole suite of 14 sensors plus an MCU and radio all on a tiny card 13.6 x 13.7 mm: It has ...
I use a tracked chassis platform, which i ordered from Shenzen and it has arrived yesterday. Getting this shipped has gone through some drama. At first, the shipment is rejected by by forwarder, as it contains LiPo battery. I got to cancel the shipment, communicate with the seller to buy another set without the battery. In total, it take less than 2 weeks to ship, which is a very decent speed. As the chassis is not the main "sixth sense" design in this work, i have decided to use an off the shel ...
This Sixth Sense design challenge is focused on sensors and this particular blog is focused on the TE Connectivity sensors that use a Wheatstone bridge architecture. Namely the FX1901 load cell and the KMT32B magnetic angle sensor. The FX1901 load cell uses micro miniaturized piezoresistive MEMS strain gages fused with stamped stainless steel flexures. This impressive technology yields excellent long term performance at a low cost. As with most strain gage load cells, the output signal is about ...