Lathe Tachometer
Feat. Arduino Micro & OLED
Gerber file
CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor GREEN and GOLD members can exclusively download these files for free as part of their membership. Gerber files allow a PCB to be produced on an appropriate device available locally, or through an online PCB manufacturing service.
Elektor recommends the Elektor PCB Service service from its business partner Eurocircuits or AISLER as the best services for its own prototypes and volume production.
The use of our Gerber files is provided under a modified Creative Commons license. Creative Commons offers authors, scientists, educators and other creatives the freedom to handle their copyright in a more free way without losing their ownership.
Components
The BOM (Bill of Materials) is the technically exhaustive listing of parts and other hardware items used to produce the working and tested prototype of any Elektor Labs project. The BOM file contains deeper information than the Component List published for the same project in Elektor Magazine. If required the BOM gets updated directly by our lab engineers. As a reader, you can download the list here.
Want to learn more about our BOM list? Read the BOM list article for extra information.
Component list
Component List
Resistors
R1,R5 = 390 Ohm 5%, 0.25 W
R2,R4 = 10 kOhm 5%, 0.25 W
R3 = 100 Ohm 5%, 0.25 W
R4 = 22 kOhm 5%, 0.25 W
Capacitors
C1,C2,C3 = 100 nF 10%, 100 V, 5 mm pitch
C3 = 10 nF 10%, 100 V, 5 mm pitch
Semiconductors
D1 = 1N4148
IC1 = 78L05Z
LED1 = LED, yellow, 3 mm
LED2 = LED, 3 mm, color t.b.d., optional, see text
Miscellaneous
MOD1 = Arduino Micro
S1 = pushbutton, PCB mount, 6 x 6 x 9.5 mm
SV1 = 8-way pinheader receptacle
K2 = 4-way pinheader receptacle
K1 = 9V battery connector clip + wires
Reflective Optical Sensor, like TCRT5000 Monochrome 0.96”, 128 x 64 pixels
OLED graphic display, 8-pin, Adafruit # 326 (UG-2864HSWEG01)
34-pin DIP socket for Arduino Micro (DIY from SIL pinheader receptacles)
Elektor PCB # 130470-1
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