GWHMI
About the GWHMI PCB
GWHMI is an open source PCB design by csabaala, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 75.6 × 51.4 mm, with 20 components from 7 distinct parts.
Other key parts include the DM-OLED096-636. By type, the board carries 5 LEDs, 5 resistors, 3 capacitors and 1 IC.
It belongs with the iot & wireless and displays & leds designs in this gallery.
From the project
DIN rail mount extension board for Olimex ESP32-GATEWAY
DIN rail mount extension board for Olimex ESP32-GATEWAY.
More Pictures and Video of the assembled board and extensions.
12V to 5V step-down converter 2 open collector output (50 mA load per channel) 2 opto isolated input LEDs for output and input status 2 sensor input (ds18b20, dht) RS-485 interface 4 pin JST connector for I2C extensions 14 pin IDC connector for direct GPIO access
Main components on the GWHMI
GWHMI bill of materials (BOM)
20 components, 7 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | DM-OLED096-636 | display_oled_128x64_i2c | U1 |
| 4 | SW_Push_Dual | SW_SPST_PTS645_handsolder | BTN1, BTN2, BTN3, BTN4 |
| 1 | Conn_02x07_Odd_Even | PinHeader_2x07_P2.54mm_Vertical | H1 |
| 1 | Conn_01x04 | PinHeader_1x04_P2.54mm_Vertical | H2 |
| 5 | LED_Small | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | LED1, LED2, LED3, LED4, LED5 |
| 3 | C_Small | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C2, C3 |
| 5 | R_Small | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2, R3, R4, R5 |
GWHMI design files
The KiCad project lives in the csabaala/SHIOGW repository on GitHub; these links point at the commit this page was built from.
- LayoutHardware/GWHMI/GWHMI.kicad_pcb
- SchematicHardware/GWHMI/GWHMI.kicad_sch
GWHMI: common questions
How big is the GWHMI PCB?
The GWHMI measures 75.6 × 51.4 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the GWHMI?
20 components, from 7 distinct parts. The full bill of materials is listed on this page.
Where can I download the GWHMI design files?
From the csabaala/SHIOGW repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the GWHMI design in my own project?
Yes, under the terms of its GPL-3.0 license, which csabaala chose for the repository.
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