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Solid Brass Wonder Woman Fidget Spinner
Dude, this is awesome.First I thought "Hey, cool headline, let's check". Then I saw the beginning of the video and I was "oh, he just assembles something he bought" and in the I was "wow, he created everything, designed the pbc and the body and let it been manufactured on an industry quality". Super awesome! Most of the time you see bread boards or prototype pcb here. This would obviously not work in such a small scale. Sadly I can't solder smd. I don't have the tools, so my circuits are always on normal, homemade pcb. Btw: nice set of tools I can see in the background ;-)Anyway: nice work, I like it 120%. You have a new follower ;-)
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Uh, and nice project BTW! I was thinking about a "holiday feeder" as well, but it is way more complicated... Your solution is definitely better! I will try it with some wood or foam since I don't have access to a 3D printer.
You could put a power bank in between. Just make sure it can charge and provide power at the same time. Or, if a short power loss and a reboot is acceptable add a relais (2× switch) which is powered by main power and if it turns off, the relais will shut down and close the circuit with battery power. If main power returns, the relais will turn on and switch back to main power. This might be a bit less efficient, but is easy and straight forward. You could even add a huge capacitor to the mcu to bridge the short power outage...
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Just as a side note: having 4 LEDs in parallel may work for you right now, but in general each of the the LEDs is getting the full voltage and 1/4th of the max current from your power source. Running the same setup with different LEDs or a different power supply might kill the LEDs. And a battery will always try to give its max current.Also a LED gets a lower resistance when it heats up (e.g. due to a high current) - leading to a higher current - leading to more heat - leading to lower resistance - leading ... this behaviour is actually the reason to put a resistor in the circuit: to limit the maximum current to not destroy the LED.Please consider this as a hint for your future projects. I am doing electronics since I am 12 (and 25 years have passed since then). I killed a lot of LEDs i...see more »Just as a side note: having 4 LEDs in parallel may work for you right now, but in general each of the the LEDs is getting the full voltage and 1/4th of the max current from your power source. Running the same setup with different LEDs or a different power supply might kill the LEDs. And a battery will always try to give its max current.Also a LED gets a lower resistance when it heats up (e.g. due to a high current) - leading to a higher current - leading to more heat - leading to lower resistance - leading ... this behaviour is actually the reason to put a resistor in the circuit: to limit the maximum current to not destroy the LED.Please consider this as a hint for your future projects. I am doing electronics since I am 12 (and 25 years have passed since then). I killed a lot of LEDs in my early years :-) Always use a resistor. This may prevent you from damaged LEDs.All the best!
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