Bicycle Light

#Bicycle Light
Bicycle Light Series

** Open source license: CC-BY-NC-SA 3.0, Creative Commons License-Attribution-NonCommercial-ShareAlike. **

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> Currently there are only tail lights

# Tail lights

> Known issues: (changed during winter vacation~**It’s winter holiday, let’s go for summer**~)
>
> 1. The standby current is large, and the 800mAh battery can only last for about three days. The next version will add electronic switches to non-MCU devices to disconnect the power supply during standby;
>
> 2. The ambient light API has been written, but the logic part has not been written;
>
> 3. STC is a QFN package, which is not friendly to soldering iron users;
>
> 4. The function of the Hall sensor has not been written and has not been tested;
>
> 5. The braking function is difficult to trigger (it can only be recognized after sudden braking and hitting a wall), and it will be triggered by mistake when crossing ditches and ridges. Cancel the next version (or replace the sensor).
> 6. The STC manual says that you can use the simulated USB download program, but my computer cannot enumerate the device and I am forced to download it through the serial port. Now supports **Uninterruptible power download**. (

## Hardware
1. STC8G1K08-QFN20;
2. 16-channel LED constant current driver TM5020A;
3. TC4056A set 400mA charging current;
4. 800mAh polymer battery, 30*34mm;


## Firmware
1. Shake/button to power on , no action for 20s/button to turn off;
2. Press the left button on the front to turn on and off, and the right button will display the battery level.

## Structure
Fusion360

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