THey are usually diffused and broken up so you have proper “glow” but no direct bright blinding light. No car has direct LEDs facing straight back. The blinding bright taillight in blinking mode is the main issue here. Why not use both? I have seen taillights that are static bright but have a less bright blinking element to them to make you aware of the presence. I would be invisible to every other car for that time period and scare the crap out of everybody around me because they don’t know my location. But again – what would happen if I turn off my taillights for 2 seconds and switch them back on again? But a cyclist is allowed to do whatever he wants? A cyclist is a participant in traffic and cars, scooters, bikes and trucks have to obey state laws when participating. Sorry its nice as a project and all – but it drives me mad that people on a bike THINK they are allowed to do everything they want. No need for shit inventions, blinky stuff and annoying, pesky distractions in traffic. Make every bike have a PROPER headlight that doesn’t blind everybody that is in front of it, make it have a STATIC backlight, BRAKE-light And a shitty blinker on each side of the bike extruding about 30cm so everybody has enough room for that.ĭONE. Slap a license plate on it because it participates in regular traffic. Why does every cyclist try to invent something new?Ī bycicle is a manual motorbike. Stop making it complicated and blinking / animated and stuff. I can’t sense the speed you and I are travelling. Remember the good old Strobe lights in discos? They make everything look frozen. It robs my vision at night because I can’t CLEARLY see the distance and speed I’m travelling at. I absolutely HATE everything that blinks on a road and I want to punch cyclists in the face for their blinking tail- and front light. As especially the high voltages are responsible for aging of the cell. For the longevity of the cell it would be best to use it only between 3V and 4V (or 4,1V). If it does not take charge at the low current, it will not reach this limit and you have to discard it.įor the cycle lifetime of a cell such extreme voltage levels are of course bad. If the cell takes charge at a low rate, it is undamaged and you can increase to normal charge currents as soon you are over 2,7V or 3V. Therefore any useful charger charges a deeply discharged cell (<2V or 2,5V) with a very low "conditioning current". Then if you manage to charge the cell with high current, you can store a substantial amount of energy in it which dissipates in the separator, leading to thermal runaway. Because then you could have copper plating in the separator. Recharging a cell damaged by reverse charge would be a danger. It’s no problem to have a cutoff voltage of 2,5 to 2,7V in a single cell device. Posted in Arduino Hacks, LED Hacks, Transportation Hacks Tagged arduino nano, bicycle, hc-05, QI, turn signal, weatherproof Post navigation But the real question: will he be donning a lighted helmet for added safety? It’s been some time since we’ve seen a bike turn signal build, so it’s nice to see one done with a bit more modern hardware. As a final touch, added a Qi wireless charging receiver to the mix so he could just pull the signal off and drop it on a charging pad without needing to open it up. To make the device easily removable, as well as keep the elements out, all the hardware is enclosed in a commercial waterproof case. Everything is powered by a 18650 lithium-ion battery with a 134N3P module to bring it up to 5 VDC. On the other side, a ATMEGA328P microcontroller along with another HC-05 drives two 8×8 LED matrices with MAX7219 controllers. In the end he managed to stuff a battery pack, Arduino Nano, and an HC-05 module inside the handlebars with just a switch protruding from the very end to hint that everything wasn’t stock. He wanted the main signal to be easily removable so he could take it inside, and the controls to be so well-integrated into the bike that they wouldn’t be obvious. So what makes these turn signals so special? Well for one, he wanted to make it so nobody would try to steal his setup. If this is him getting started, we’re very keen to see where he goes from here. Given the final results and the laundry list of features, we’d say he really knocked this one out of the park. But rather than buy something off the shelf, he decided to make it into his first serious Arduino project. Tired of risking his life every time he had to signal a turn using his hands while riding his bicycle in rainy Vancouver, decided he needed something a bit higher tech.
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