Lithium battery powered electric mosquito repellent liquid repels and kills mosquitoes.

It's that time of year again when mosquitoes bite, so it's time to get some effective tools to repel them. The mosquito repellent
we use at home is a 220V electric heated liquid mosquito repellent, which gets very hot.
It's very inconvenient to use outdoors;
a battery-powered one would be much more convenient.
Currently, it has a built-in 18650 lithium battery. This portable mosquito repellent
uses a fan to evaporate the mosquito repellent liquid.
When not in use, it can be unscrewed and used as a night light or small fan. It currently has three fan speed settings, which can be modified by the user.
Open source license
: Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0).
We welcome everyone to create their own versions, but we hope you will adhere to the open source license.
For derivative works, please clearly indicate the author and source address in a prominent position.
For derivative open source projects, please clearly indicate the modifications to facilitate reference and contribution by others, and to help distinguish them from the original.
Without the original author's permission, the original project and derivative projects may not be used for commercial purposes.
We hope everyone will retain the original open source author information in the PCB or other open source files.
 
 
Demonstration:
https://www.bilibili.com/video/BV1iM4m1U7WM
 
 
Material Preparation:
In addition to purchasing the BOM exported from LCSC EDA, you also need to purchase the following materials:

5V 4010 fan SHENG FENG (胜丰宏). Cooling Fan SF4010B2M5 40*40*10mm DC5V, 7000rpm [Price, Purchase, Pictures] - LCSC MRO Industrial Products (szlcsc.com)
18650 Lithium Battery KAMCY/Kangsheng, Cylindrical Lithium Battery, 3.7V, 18650-2600mAh-3.7VC, 1 piece [Price, Purchase, Pictures] - LCSC MRO Industrial Products (szlcsc.com)
M1.7*10 Self-Tapping Screws 3 pieces
M3*14 Countersunk Screws 4 pieces

 
Firmware Download
 Reference Air001 Development Board Introduction | AirMCU (luatos.com) allows for serial port downloading and
development using the Arduino environment
, or via an emulator. The board has pre-reserved ports. The main
 
hardware
controller is the Heze Air001, which is relatively inexpensive, supports Arduino development, and requires fewer external components.
The charging chip is an IP5306, used to charge the 18650 lithium battery and provide main power to the system
. The fan is a 4010 fan controlled by PWM.
 
 
Power
buttons: double-click to power off, single-click to power on.
Button 1: Fan control, three-stage, short press.
Button 2: Lighting effect, short press
 
 
effect
. Due to limited testing time and varying mosquito numbers, no mosquito bites were observed during testing.
Further testing is pending feedback.
 
 
PCB layout.
1.6mm thickness,
latest version: v1.1.
Note: There are two 18650 sockets on the board; choose one as needed. One is for 18650 batteries with a protection board, and the other is for batteries without a protection board.
Pay attention to the positive and negative terminals of the battery and fan; do not reverse them.
 
 
3D printing
files can be downloaded here: https://makerworld.com/zh/models/479319#profileId-390663