Kmdisp
About the Kmdisp PCB
Kmdisp is an open source PCB design by fjalvingh, published on GitHub. It is a 2-layer board measuring 59.4 × 35.8 mm, with 8 components from 8 distinct parts.
By type, the board carries 4 switches, 2 connectors, 1 capacitor and 1 resistor.
It belongs with the displays & leds designs in this gallery.
From the project
PDP-11 KM11 maintenance module, using an LCD screen
This is supposed to become a KM11 maintenance module. It is a 2 slot card which should be placed in both KM11 slots of a PDP 11/05 or 11/10. It uses an ATTINY1616 (or 3216 if I cannot make the code fit) and a set of i2c I/O adapters (PCF8574T) to read the data from both slots for the KM11, and writes those to an LCD screen, offset on a cable.
The main PCB must be placed in the PDP 11/05. The LCD display and the switches sit on a second, small PCB (kicad/kmdisp) at the end of a 20-way ribbon cable, so they can be outside the pdp/11 in the 3D-printed console from 3d/.
Kmdisp bill of materials (BOM)
8 components, 8 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | lcd_conn | PinSocket_1x08_P2.54mm_Vertical | J1 |
| 1 | display_switches_hdr | PinHeader_2x10_P2.54mm_Vertical | J2 |
| 1 | SW_Step | SW_Toggle_MTS102 | SW1 |
| 1 | SW_SSYN | SW_Toggle_MTS102 | SW2 |
| 1 | SW_ClkEna | SW_Toggle_MTS102 | SW3 |
| 1 | SW_AcLo | SW_Toggle_MTS102 | SW4 |
| 1 | 47UF 47uF | CP_Elec_4x3.9 | C1 |
| 1 | 24R | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1 |
Kmdisp design files
The KiCad project lives in the fjalvingh/km11 repository on GitHub; these links point at the commit this page was built from.
Kmdisp: common questions
How big is the Kmdisp PCB?
The Kmdisp measures 59.4 × 35.8 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Kmdisp?
8 components, from 8 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Kmdisp design files?
From the fjalvingh/km11 repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Kmdisp design in my own project?
The repository has no license, so all rights stay with fjalvingh. Use it as a reference, and ask the author before reusing the design.
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