converting 1.5v to 1.3v

[richardHaw]

been super busy lately so I forgot to post these here. 

https://richardhaw.com/2019/01/26/mod-converting-gadgets-to-use-1-5v-batteries/

this is just for the diode method. experts, please feel free to correct me or add any information.

I will make another one that uses the potentiometer method. this one i am more familiar with because we used to do this for my old hobby (car restoration).