mirror of https://github.com/CIRCL/Circlean
1.4 KiB
1.4 KiB
Daughter board schematic
Note
the schematic has been created using GNU gEDA
Bill of material
Part list
- 3mm diameter low power LED Green
- 3mm diameter low power LED Yellow
- 3mm diameter low power LED Red
- PCB mounted SPST normally open push-button
- 26 (or 40) DIL poles pin-header female connector
- resistors (values are not critical) 510 Ohm (3) 16 KOhm 1.3 KOhm
Mechanical design
coordinate (0,0) is located at the PCB corner near the power supply connector. the X axis is along the longest side.
- hole_x1 = 3.50 ; // hole center x offset from PCB edge (uSD side)
- LedBtn_y = device_y - hole_y - 2.5 * 2.54 + tolerance ; // Y axis center position of LEDs and button(s)
- R_Led_x = hole_x1 + 29 + 2.54 + tolerance ; // X axis center position of red LED
- Y_Led_x = R_Led_x - 3 * 2.54 ; // X axis center position of yellow LED
- G_Led_x = R_Led_x - 6 * 2.54 ; // X axis center position of green LED
- Btn_x = R_Led_x + 4.5 * 2.54 ; // X axis center position of button
The LEDs and the push-button are positioned on the 2.54 mm (0.1 inch) grid
Relative to he GPIO connector pin 1
- along the X axis : -2 * 2.54 mm
- along the Y axis (in multiples of 2.54 mm)
- Green LED center : 4.5
- Yellow LED center : 7.5
- Red LED center : 10.5
- Push-button center : 15.0
The LEDs have a 3 mm diameter The top of the LEDs are 11 mm above the PCB