LCD module data
Numeric
Character
Mixed
- ≡ Uniden FP203 ✘
- ≡ Uniden FP204 ✘
- ≡ VIP89Z G-Code ✘
Graphic
key: ≡ parallel, ↔ serial, ~ LVDS, _ unknown, ✘ discarded as not useful
Resources
This is an old revision of the document!
LCD Description |
|
|---|---|
| Model | GB-1494V-OS SH84149 |
| Manufacturer | Canon |
| Recovered from | Canon LBP-8 III printer |
| LCD type | positive |
| Polarizer type | reflective |
| Columns | 16 |
| Rows | 1 |
| Char matrix | 5×7 |
| Driver IC | Hitachi HD44780A00 |
| Backlight | - |
| Arduino driver | LiquidCrystal.h |
| Connector | pin header |
| Num Pins | 14 |
| Pin spacing | 0.1“ |
| Arduino test rig 1) | ||||
|---|---|---|---|---|
| Pin# | IC pin | Label | Pin | colour |
| 1 | 23 | gnd | gnd | orange |
| 2 | 33 | vcc | +5v | red |
| 3 | 30 | v5 | brown | |
| 4 | 36 | rs | d8 | yellow |
| 5 | 37 | r/w' | gnd | green |
| 6 | 38 | e | d9 | blue |
| 7 | 39 | d0 | ||
| 8 | 40 | d1 | ||
| 9 | 41 | d2 | ||
| 10 | 42 | d3 | ||
| 11 | 43 | d4 | d4 | purple |
| 12 | 44 | d5 | d5 | grey |
| 13 | 45 | d6 | d6 | white |
| 14 | 46 | d7 | d7 | black |
16 x 1 characters, but logically laid out as two lines of 8 characters.
The contrast adjustment v5 needs to be connected to a 10kΩ potentiometer between +5v and ground.
The LCD is mounted on a sub-board that can be unsoldered from the mainboard.
Datasheets
- HD44780 Dot Matrix Liquid Crystal Display Controller/Driver.
- HD44780U Dot Matrix Liquid Crystal Display Controller/Driver.
Examples from Canon LBP-8 III printer :
1)
reminder for my personal testing, not useful for anyone else!
electronic/lcd/lbp8iii.1541786220.txt.gz · Last modified: 2018/11/09 17:57 by tony
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