DIY-helper

..is a arduino based distance meter tool
with 4 distance sensors looks "up", "down", left and right, to help positioning things on the wall (e.g.: picture frames) or on the floor.

The original idea found on this video.

Planned features:

• Simple distance measurement
• Distance measurement in 2 opposite side (can select direction [left-right / up-down])
• Positioning: continously show the distance values in real time (measure from middle hole or from the side)
  • Can "store" the position and measure distance from that point
• Area calculation (can select display unit (cm2 or m2 -usefull for wall painting-))

Used libraries:

• For handling more push-buttons on 1 single ADC input: ButtonHandler-library
• For handling OLED display over softSpi bus: SSD1306Ascii-library
• For handling HC-SR04 distance sensor: HC-SR04 library

Custom modules:

• Main board (as arduino nano shield) schematic, pcb design, pcb design as .pdf
• Button board schematic, pcb design, pcb design as .pdf

ToDo list:

• Clarify / finalyze planned features
• Create test circuits on bread-boards for handling multiple buttons on 1 ADC input
• Try out to use multiple buttons in 1 ADC line
• Create schematic for main board
• Create schematic for button board according to the planned features (e.g.: count of push-buttons)
• Create PCB design for main board
• Create PCB design for button board
• Finalyze part-list and buy missing parts (if there any)
• Create test circuits on bread-boards for complete project
• Create plans for "UI"
• Create the "RC"-version from firmware
• After first working bread-board prototype:
• Create case-design
• Decide about used materials
• Build final version in proper case.