Punchcard Reader
About the Punchcard Reader PCB
Punchcard Reader is an open source PCB design by Robert-Mones, published on GitHub. It is a 4-layer board measuring 68.5 × 43.5 mm, with 36 components from 10 distinct parts.
Other key parts include the 74HC541. By type, the board carries 12 capacitors, 11 diodes, 11 resistors and 2 ICs.
It belongs with the displays & leds and retro computing designs in this gallery.
From the project
A reverse Polish notation calculator with added features such as comparisons, branching, and custom recursive operators taken from the Clac project from the 15-122 course at Carnegie Mellon University. The project is built around a 6502 microprocessor with a custom architecture to reduce CPU load by making peripherals operate asyncronously.
Main components on the Punchcard Reader
Punchcard Reader bill of materials (BOM)
36 components, 10 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | 74HC541 74HC14 | SOIC-14_3.9x8.7mm_P1.27mm | U1, U2 |
| 10 | APS2012SP1C | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D1, D2, D3, D4, D5, D6, D7, D8 +2 |
| 1 | LED_BACKLIGHT | LED_D3.0mm | D11 |
| 2 | 10UF 470pF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C4 |
| 6 | 1UF 470pF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C2, C5, C7, C8, C9, C10 |
| 2 | 0.1UF 470pF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C3, C6 |
| 2 | 1UF 0.1uF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C11, C12 |
| 1 | 10K 500k | VariableResistor_Bourns_3006P_Horizontal_ | R1 |
| 9 | 500k | VariableResistor_Bourns_3006P_Horizontal_ | R2, R3, R4, R5, R6, R7, R8, R9 +1 |
| 1 | 120Ω | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R11 |
Punchcard Reader design files
The KiCad project lives in the Robert-Mones/Claculator repository on GitHub; these links point at the commit this page was built from.
Punchcard Reader: common questions
How big is the Punchcard Reader PCB?
The Punchcard Reader measures 68.5 × 43.5 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Punchcard Reader?
36 components, from 10 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 Punchcard Reader design files?
From the Robert-Mones/Claculator 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 Punchcard Reader design in my own project?
The repository has no license, so all rights stay with Robert-Mones. Use it as a reference, and ask the author before reusing the design.
More boards in Claculator
Similar boards
View base
scottbez1
81.2 × 81.2 mm81 parts2LApache-2.022.2k
BM28B0.6-24DSBreakout
15.2 × 35.6 mm3 parts2LApache-2.022.2k
LevelShifterBreakout
15.2 × 20.3 mm5 parts2LApache-2.022.2k
View screen
35 × 35 mm12 parts2LApache-2.022.2k
Display eval
byrantech
52.1 × 22.6 mm12 parts4LMIT4.3k
ChainlinkDriverTester
198.1 × 95.3 mm123 parts2LApache-2.04.2k