How to load Firmware / Sketch in Arduino Pro mini without using DTR Pin

I want to make a low weight Arduino based project. So I want to use 8MHz, 3.3V Arduino Pro Mini using a single Li-Po battery. Why 8MHz and how ? Watch the below link:
   • How to Power up Arduino using a 3.7V ...  
I have shown a simple trick in this video on how to load Firmware without using the DTR pin. So You can use any USB to TTL convertor.
If you use YP-01 or PL2303 like mine you may get some driver issue. To solve it please watch the below link.
   • How to fix YP-01 / PL2303 Driver /  C...  

Buy the items from below links:
Li-Po Battery: https://amzn.to/2REw1hE
Arduino pr mini 8MHz : https://amzn.to/2RH2kMN
USB to TTL : https://amzn.to/2xjC55M
Tag:
#ArduinoProMini #ArduinoProject #Brainergiser

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