LCD2USB
Today, I finally found some time to build my LCD2USB hardware project.
The goal was to connect a HD44780 based text LCD display to my fli4l router. Therefore it was necessary to solder the required parts to the lcd2usb PCB first, then to connect it to my router and finally update and configure the router.
After some time f hard work, I finally succeded and was able to successfully test my finished lcd2usb project 🙂
Some pictures of the result:
LCD2USB connected to my fli4l router - front view
LCD2USB connected to my fli4l router - top view
Todo List
- Find a solution to mount the lcd to the router, or at leat near to the router.
- Build the 2nd LCD2USB, which will be used for my eisXen Server.
Part list
You can get all parts directly via the lcd2usb part list at Reichelt. This list is for the V1.1 pcb and includes the following parts:
| Part | Qty | Name | Reichelt Part No. | |
|---|---|---|---|---|
| Q1 | 1 | 12Mhz crystal, HC49U package | 12,0000-HC49U-S | |
| R1 | 1 | 2.2k ohm resistor | 1/4W 2,2k | |
| R2, R3 | 2 | 68 ohm resistor | 1/4W 68 | |
| R4 | 1 | 47 ohm resistor | 1/4W 47 | |
| R5 | 1 | 220 ohm resistor | 1/4W 220 | |
| R6 | 1 | 4.7k ohm resistor | 1/4W 4,7k | |
| C1, C2 | 2 | 22pF ceramic capacitor, 2.54mm | KERKO 22P | |
| C3, C5 | 2 | 100nF capacitor, 5.08mm | X7R-5 100N | |
| C6, C7 | 2 | 10?F electrolytic capacitor | RAD 10/35 | |
| T1 | 1 | BC547C transistor | BC 547C | |
| L1 | 1 | 10?H inductor | SMCC 10? | |
| S1, S2 | 2 | push button | TASTER 9305 | |
| SV1 | 1 | 10 pin ISP connector | WSL 10G | |
| JP1 | 1 | display connector | BL 1X20G 2,54 | |
| JP2, JP6 | 1 | display connector | BL 2X10G 2,54 | |
| — | 1 | display side connector for JP2/JP6 | SL 2X10G 2,54 | |
| JP3 | 1 | 4 pin debug connector, display side connector for JP1 | SL 1X36G 2,54 | |
| LED1 | 1 | LED 3mm green | LED 3MM GN | |
| — | 1 | USB-B print connector | USB BW | |
| IC1 | 1 | Atmega8-16 DIP | ATMEGA 8-16 DIP | |
| — | 1 | socket for IC1 | GS 28P-S | |
| D1, D2 | 2 | 3.6V zener diode | ZF 3,6 |
Additional Parts
1x LCD2USB PCB V1.1
1x LCD 204B BL – LCD Dot-Matrix-Modul, 4×20
1x USB Cable
Fli4l Configuration
To be able to use the lcd with my fli4l router I had to install the opt package “lcd4linux“. After installing this opt package, the only thing left was to configure this opt, which is quite simple:
My actual (test) configuration for the lcd4linux package:
OPT_LCD4LINUX='yes'
LCD4LINUX_HD44780_DRIVER='no'
LCD4LINUX_LCD2USB_DRIVER='yes'
LCD4LINUX_HP12542R_DRIVER='no'
LCD4LINUX_CTINCLUD_DRIVER='no'
LCD4LINUX_ICONS='1'
LCD4LINUX_DISPLAY_SIZE='20x4'
LCD4LINUX_DSL_SPEED_IN='16384'
LCD4LINUX_DSL_SPEED_OUT='1024'
LCD4LINUX_LAYOUT_N='7'
LCD4LINUX_LAYOUT_1='Row1.Col1 :Info:'
LCD4LINUX_LAYOUT_2='Row2.Col1 :Heart:'
LCD4LINUX_LAYOUT_3='Row2.Col2 :Busy:'
LCD4LINUX_LAYOUT_4='Row2.Col11 :BusyBar:'
LCD4LINUX_LAYOUT_5='Row3.Col1 :ImonDSLQuantity_In:'
LCD4LINUX_LAYOUT_6='Row3.Col12 :ImonDSLQuantity_Out:'
LCD4LINUX_LAYOUT_7='Row4.Col1 :ImonDSLRate_Bar:'
LCD4LINUX_EXPERT_MODE='no'
LCD4LINUX_TEST='no'
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