Robot car

Reminder

This post just to remind me for anything related to the electronic that I need to considered before start any new project.

1. If use Arduino Pro Mini, Servo motor and LIPO as power source, please use bigger wire to ensure that the current can flow easily. Cannot to use small wire such as AWG30 and connected to the RAW pin at Pro Mini. 
2. Make sure all the components/parts well function b4 install to the structure.
3. Sometime for Pro mini, they used different chip which is ATMEGA328P or ATMEGA168. So, please make sure you select the right board in Arduino IDE before you upload the code.
4. Working current for MG995 is more or equal to 1A.
5. If the buzzer did not play a sound, just tick, tick, tick. Put some delay between HIGH and LOW in coding.

Smart Door Lock - Completed

Smart Door Lock for this version has been completed and well function. After some modification on the circuit and the casing, the final product become smaller than before. 

Before

After (with apps for Android)

Smart door lock

Just completed for the first prototype. Well functioning and working. Need to minimize the size of project.

Unlocked Door part 2

After installed to the door. Next, to include the switch and the battery. However, after testing, that size of servo motor can't afford to rotate the knob. So, this prototype has failed. 

Summary: Don't start fabricate anything before you completed the circuit and testing. 

Unlocked Door part 1

Unlocked your door using smartphone.