2 layers
Encoder
byrantech/laptop
anyon_e, a highly integrated, high end, open source laptop. Attempt the impossible.
7 parts4.3kMIT
2 layers16 × 42 mm
1602-backpack
threedaymonk/1602-backpack1Small backpack convenience board for 1602 and similar LCD displays
- Size
- 16 × 42 mm
- Copper layers
- 2
- Thickness
- 0.57 mm
- Parts
- 7
- Nets
- 16
- Pads
- 49
- Tracks, vias
- 41, 2
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 30 Oct 2022
- Updated
- 30 Oct 2022
Overview
1602-backpack is an open-source printed circuit board by threedaymonk, from the threedaymonk/1602-backpack repository on GitHub, published under the CC-BY-SA-4.0 licence. It is a 2-layer board of 16 × 42 mm with 7 parts on 16 nets, routed with 41 tracks and 2 vias.
It belongs with the lEDs and displays boards of this library.
README
README.md1602 Backpack
A small backpack board to add any or all of the following to a 1602 LCD display (and other variants with similar pinouts, like 2004):
- contrast adjustment trimmer
- supply backlight from VDD/VSS
- set to write-only mode
- simplify the connection to 8 pins
There are three connector footprints. The topmost is for attaching to the back of the display module. The middle footprint exposes the same 16 pins. The lower footprint has eight pins: VSS, VDD (5V), RS, E, and four data lines D4-D7.
Contrast adjustment
Install a 10K trimmer potentiometer. If you're using the long connector (in the middle) don't solder a pin at pin 3 (VO)
Backlight
Solder the two jumpers labelled "Backlight". Do not use pins 15 and 16 of the long connector.
Write-only
Does anyone ever read from these displays? If you're interfacing from a 3.3V device, you won't want to. This jumper is essential when using the shorter connector.
How to ...
Connect to an Arduino or Raspberry Pi with 8 wires
- Solder all three jumpers (Backlight and Write only)
- Solder a header to the short 8-pin connector
- Install a 10K trimmer
If using a 3.3V device, note that VDD still has to be 5V.
Add contrast adjustment to a device without it (e.g. Kawai K1r)
- Install a 10K trimmer
- Remove pin 3 (VO) from a 1x16 header and solder it to the long connector footprint.
Parts
7| Qty | Value | Footprint | References |
|---|---|---|---|
| 1 | 10K | Personal:Potentiometer_6mm_Trimmer | RV1 |
| 1 | Full | Connector_PinHeader_2.54mm:PinHeader_1x16_P2.54mm_Vertical | J2 |
| 1 | LED A | Personal:SolderJumper | JP2 |
| 1 | LED K | Personal:SolderJumper | JP3 |
| 1 | Minimal | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical | J3 |
| 1 | WC1602A | Connector_PinSocket_2.54mm:PinSocket_1x16_P2.54mm_Vertical | DS1 |
| 1 | Write Only | Personal:SolderJumper | JP1 |
Questions
How big is the 1602-backpack PCB?
It measures 16 × 42 mm and has 2 copper layers, 0.57 mm thick.
What parts does the 1602-backpack use?
7 parts. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the 1602-backpack KiCad files?
From the threedaymonk/1602-backpack repository on GitHub, at the commit this page was made from: the board is 1602-backpack.kicad_pcb and its schematic 1602-backpack.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the 1602-backpack design in my own project?
Its repository publishes it under the CC-BY-SA-4.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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