Imported from GitHub: dlutz52/HD44780-tutorial-PCB · commit e58806f · license GPL-3.0
Description
This repository contains a complete KiCad project for creating a PCB that implements the circuit design of Ian Ward in his YouTube video with the title of LCD2004 20×4 LCD Character Display with HD44780 Tutorial
README
HD44780 Tutorial PCB
My inspiration for this PCB came from following Ian Ward's project on his web site:
LCD2004 20×4 LCD Character Display with HD44780 Tutorial
HD44780 Tutorial PCB BOM
Wed, Mar 20, 2024, 05:20:29
Component Count: 19
| Ref | Qty | Value | Vendor\Part # | Description |
|---|---|---|---|---|
| C1, C2 | 2 | .01uF | Digikey\FG28C0G1H103JNT06 | Unpolarized capacitor |
| D1 | 1 | RED | Generic | LED\3mm\Red |
| D2 | 1 | BLUE | Generic | LED\3mm\Blue |
| D3 | 1 | 8_SEG_LED BAR_GRAPH (RED) | Generic | LED Bar Graph\Red\1x8 |
| D4 | 1 | GREEN | Generic | LED\3mm\Green |
| D5 | 1 | YELLOW | Generic | LED\3mm\Yellow |
| J1 | 1 | PinSocket_1x16_P2.54mm_Vertical | Generic | Female Pin Header\1x16\2.54mm pitch |
| J2 | 1 | UJC-HP-M-G-5-MSMT-TR | Digikey\2223-UJC-HP-M-G-5-MSMT-TRDKR-ND | Type C/20 VDC/3A/Horizontal/6 Pin/Power Only |
| R1, R5, R6, R9 | 4 | 330ohm | Digikey\13-MFR-25FRF52-330RCT-ND | Resistor\330 Ohm\1%\1/4W\Axial |
| R2, R3, R4 | 3 | 1Kohm | Digikey\13-MFR-25FTE52-1KCT-ND | Resistor\1Kohm\1%\1/4W\Axial |
| R7, R8 | 2 | 5.1Kohm | Digikey\13-MFR-25FTE52-5K1CT-ND | Resistor\5K1ohm\1%\1/4W\Axial |
| RN1 | 1 | 470ohm | Digikey\4609X-101-471LF-ND | Resistor Array\ 8 Resistors\470ohm\9SIP |
| RN2 | 1 | 1Kohm | Digikey\4609X-101-102LF-ND | Resistor Array\ 8 Resistors\1Kohm\9SIP |
| RV1, RV2 | 2 | 5Kohm | Digikey\3386P-1-502LF | Trimmer Pot\5Kohms\0.5W\1/2W\Through Hole |
| S1 | 1 | TL2230 | Digikey\EG6031-ND | Switch\Pushbutton\DPDT\Through Hole |
| SW1 | 1 | REG SELECT | Digikey\450-1654-ND | Switch\Tactile\SPST-NO\0.05A\24V\Through Hole |
| SW2 | 1 | ENABLE | Digikey\450-1654-ND | Switch\Tactile\SPST-NO\0.05A\24V\Through Hole |
| SW3 | 1 | DS02C-254-1L-08BE | Digikey\2223-DS02C-254-1L-08BE-ND | Switch\Piano\8-DIP\SPST\25mA\24V\Through Hole |
The LCD and its 16-pin male header are represented only with 3D models, but you need a 2004 LCD with a soldered 16-pin male header with a pitch of 2.54mm to plug into the 16 pin female header to complete this PCB. I have found the best place to get these is on eBay.
Do NOT try to use a 2004 LCD with an I2C adapter on it.
Most symbols/footprints/models are contained under the 'libraries' directory. Capacitors, resistors and LEDs use KiCad symbols/footprints/models.
KiCad 7.0.10 was used to create this PCB. KiCad 8.0.1 is out now and this project opens in that version. The newer KiCad will warn that this project was created in previous version and will be saved in a the newer format. When closing the schematic or a PCB just discard any changes. If you do not you will not be able to use KiCad 7 any more without difficulties.
Some models in KiCad's 3D view will display an appropriate socket under them but these can be omitted on the PCB - they are used to make it easier to replace any components should they need it in the future.
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