
1). Everyone built with the same chassis. By far, the flip-over battery-powered cars from Dollar Tree made the best robot. I started stockpiling them earlier in the year. I can never find these cars listed on the website, but this is what they look like:
I am not looking forward to the day these cars are no longer carried by Dollar Tree. I can only hope that my insane buying sprees throw off their inventory and they continue to restock them, if nowhere else, then at least in their North Portland/ Southwest Washington stores.
2). All chassis were stripped of their car shells and batteries installed before the program (thanks to wonderful Library Intern Katie!). I think the deconstruction piece is an important aspect of any maker project, but I abandoned this step to make it a little less stressful for participants and staff members! Last year, we had a few chassis models for people to choose from. The tricky thing is the variety of tiny screwdrivers needed to dismantle the chassis and the inevitable shortage of the correct screwdriver. Even the cars we went with were a challenge as the battery compartment cover is secured with a tiny screw and the car shell is attached to the chassis with deep inset tiny screws. Once the car is dismantled, you have to snip the headlight wires free from the circuit without nicking the motor wires. I really wanted the LEDs as part of the circuit, but they're tiny and really glued into the headlamp, so not worth the struggle...this time.
Box o' chassis at registration:
When participants arrived, they were given a numbered registration form, so they know the build specifications, and a chassis.
They turned their completed registration form back in with the robot during the judging phase to make sure all the robots met build specification (and so everyone had the chance to see the robots all together before the tournament).
3). All supplies were provided by the library. No home builds this year. The staple items for this program:
scissors

masking tape
duct tape
cardboard
paper
Everything else was left up to whatever I had squirreled away throughout the year. 2018 included:
CDs
5.25" floppy discs
Squares of foam
Styrofoam (bad idea)
pipe cleaners
off-brand building bricks
coffee stirrers
plastic cups
Wires
Keyboard keys
Computer Keyboard circuits
4). Build time was limited to 1 hour. Last year we started build at 4 pm and competition at 6 pm. Early attendees became restless and most of our attendees arrived around 5 pm, so we shortened the build window this year. I also built all the Hebocon trophies in an hour, so I felt that amount of time sufficient.
5). Audience Choice and registration were more organized this year. We checked in all the completed robots promptly at 6 pm by adding them to a master list, weighed the robots, made sure they were smaller than 20"x20" and then set them all up with their numbered registration form for everyone to vote for the most creative robot. Everyone wrote the number of their choice on a slip of paper. A Hebocon Official gathered all the votes and tallied them while we battled the bots. While attendees voted, another Hebocon Official took the master registration list, cut it into strips and arranged the strips into a randomized bracket (no need to enter them into a paper bracket). I felt this was my most clever hack to make the tournament progress at a quicker and more organized pace!
6). A Hebocon Official recorded all the battles so we could refer to instant replay if needed. There were a few instances where it wasn't clear which robot actually went out of the ring first after they collided, so the video was helpful. We did also have to use the robot that traveled the furthest distance rule as well as audience vote for the winner of a tricky battle. A bonus to recording all the battles is access to some exciting footage!
Hebocon is a great design-thinking project and encourages open-ended making. Other than size and weight and don't destroy other robots, there are no build instructions. This program encourages creative play and exploration and appeals to a wide range of participants. Our youngest competitor was just a toddler, and our oldest was a retiree. Families, friends, and siblings worked together to build very different robots and appreciated the other robots because they knew how much work went into the building process. Hebocon continues to be a community-building project that brings people from different backgrounds together to have fun!