Part |
Value |
Comment |
R1 |
10k (103) |
SMD, 1206 |
R2 |
0.5R - 10R |
Must be adjusted to the backlighter of LCD |
R3 |
4k7 (472) |
SMD, 1206 |
R4 |
22R (220) |
SMD, 1206 |
R5 |
22R (220) |
SMD, 1206 |
R6 |
10k (103) |
SMD, 1206 |
R7 |
10k (103) |
SMD, 1206 |
R8 |
10k (103) |
SMD, 1206 |
C1 |
100nF (104) |
|
C2 |
100nF (104) |
|
C3 |
33pF |
|
C4 |
33pF |
|
C5 |
220nF |
|
C6 |
100µF/16V |
|
P1 |
10k trim |
Contrast adjustment for the LCD |
X1 |
4.0000 MHz |
HC49/4H Low profile crystal |
U1 |
PIC18F2550-I/SP |
Program it with the code from the Bit-tech thread. |
T1 |
BC547B |
Transistor type not critical - any similar type will work. |
J1 |
16-pin header |
Connects to LCD. Single row, 2.54 mm spacing. |
J2 |
8-pin header |
For own experimentation. Single row, 2.54 mm spacing. |
J3 |
3-pin header |
For rotary encoder. Single row, 2.54 mm spacing. |
J4 |
Type B USB |
PCB-mounted USB connector. |
B1 |
Button |
ALPS pushbutton series HH, 6 x 6 mm (type SKHHAJ). |