Triple locking my favorite, irreplaceable, bike.
2πRC
@twopirc
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Plants, bikes, urbanism.
Running my next overnight test. Now using an 18560 Li-ion pack that should get me about 6 days of runtime. Also now using a waterproof enclosure that's a perfect fit for the battery pack. There's enough extra room in there to be able to double up on batteries and run for a week and a half.
#BikeTooter #safestreets #completestreets
#BikeTooter #safestreets #completestreets
Going strong at three years since I last used a car to get to work. I'll never willingly go back.
#BikeTooter #bikecommute #ebike #cargobike
#BikeTooter #bikecommute #ebike #cargobike
Added a real-time clock module so that I can have absolute time stamps. Decided to utilize our existing Ego yard tools batteries for this system-- good high density batteries with very large capacities. Running a battery test with our smallest 2.5Ah (140Wh) battery. Expecting about three days of runtime. Next up will be migrating to a soldered perfboard and figuring out a waterproof enclosure.
Have now included the scale factor to account for non-perpendicular placement of radar wrt vehicle trajectory (measured speeds are lower than actual speeds), and have correlated a few of the datapoints with video footage.
Concerning that our local police department, while out on patrol at 2am, is going 10mph over the limit.
Data from an overnight test run. Getting about 11 hours from 6800mAh. Evening traffic on a holiday is particularly light/slow. Very curious to see what this will look like for a normal workday.
Peaceful ride on back roads to grab a curbside pickup order. No cars means no stress.
Field testing the prototype system. Tupperware makes for a great weather-resistant (and radar-transparent) enclosure. Hoping to be able to get a week from a single battery, but TBD what capacity that will actually translate to.
It turns out you can still snoop the UART Tx, so the initial test getting the radar speed data into the Arduino is a success. I picked the MKR Zero for its 3.3V UART compatibility as well as on-board SD card support. Should only be a few lines of code to log the data to the card. Need to decide if I need a proper RTC or if I can get by with the on-board RTC of the MKR, which resets to 0:0:0 every time the board starts up, so I'd only get relative time offset.
Small advocacy win-- removal of slip lane in updated 25% design plans in favor of signalized right turn. Now to get that turn radius reduced...
#BikeTooter #safestreetsforall #activetransportation
#BikeTooter #safestreetsforall #activetransportation
