Following yesterday blog, i have left my battery charging overnight. Today, when i measure its voltage with my Sanwa CD800a it reads 8.4V, surprisingly higher than my expectation. So i bring it out for testing on the grass and it runsplayers.bri...
This week turned out to be a stubborn, frustrating struggle to get the drive motors under computer control. The libraries for the MiniMoto controllers I had purchased didn't work - the example wouldn't even compile. It was developed on an older versi...
Following from yesterday post, today i try to connect my bench top power supply to the 13A motor driver to test it i first tested with a single motor, then i realize that i can just chain two motor together. The objective is just to test these&n...
Introduction:The SensorTile is a tiny, square-shaped IoT module that packs powerful processing capabilities leveraging an 80 MHz STM32L476JGY microcontroller and Bluetooth low energy connectivity based on BlueNRG-MS network processor as well as a wid...
wow, time flies, i realize i haven't posted anything for 1 months plus. This post is a relatively short post i was out for oversea trip for 2 weeks, also another 1 week for Chinese New Year holidays, nonetheless over the last one month, i ha...
Thankfully the final PCB has arrived back from the printers.Today I assembled the fourth and last custom PCB for the GraffitiBot project and fortunately it went together without any problems.The schematic and board layout were published in blog 4.Thi...
This is the big milestone tenth blog in this design challenge, but there is still a lot of work to do with only 4 weeks left. My LCD PCB finally came back from the being printed, so I can connect up the liquid crystal displays and start programming.T...
This blog describes assembly and testing of the TE Connectivity magnetic angle sensor. The circuit design was described in a previous blog. The PCB arrived a couple of weeks ago, but I had to wait for parts to build it.I had ordered parts from Newark...
I finally received enough parts to assemble the load cell signal conditioning circuit board.The circuit schematic and PCB layout for load cell signal conditioning were covered in a previous blog.The TE Connectivity FX1901 load cellFX1901 load cell wi...
Two of the PCBs I designed for the GraffitiBot came in but I won't have enough components to assemble them until at least next week. Here is what they look like:One interfaces to the load cell and one interfaces to the magnetic angle sensor. Whi...
Greetings from the UAV R&D group. We hope all our fellow competitors are having a good time with the designing. Last month has been quite fulfilling for us as a research group. We were able to overcome some hurdles and complete the assembly of th...
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 guida...
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 ...
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:www.youtu...
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...
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...
Some component testing.....www.youtube.com/watch Electronic InterfacesThis 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 Blue...
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 shipme...
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 cel...
I have just got a UPS update that my kit will reach on 26 Dec 18, right after Christmas. So i still can enjoy the Christmas holiday now. Anyway, the only update i have is i have decided to go for somewhat fail safe chain track chasis. It does comes w...
The past week has been about doing enough detailed design to get long lead time components on order.The parts kit from STMicroelectronics and TE Connectivity came in and I have been looking through the datasheets.Some parts I ordered have also come i...
We are back with a second blog post and this one is pretty interesting.Since our UAV Inspection system uses Quadcopter(s) to collect data, we decided on making a custom one for ourselves to meet our specific requirements. Quadcopters are infamou...
Hello everyone! Without wasting much time for the kit to arrive. Let me first give an introduction to what I do. I am member of Vjti Racing Team, Mumbai which is consist of 32 engineering enthusiast. My task is handling the entire electronic aspect o...
Title: Semi Automatic Fire Fighting RobotBy: sunnyiut Design Challenge: Sixth Sense Design ChallengeBlog number: 01 "Fire Fire Fire"!!!A serious issue. However, my project is not so serious to find a bullet-proof solution. Rather ...
