Difference between revisions of "PDP-8 Front Panel Assembly Sheet"
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| − | == Notes == | + | === Notes === |
| − | # I used [https://www.ebay.com/itm/123897764301?var=425000887144 orange clear LEDS] but [https://www.ebay.com/itm/381087033256 orange diffused body LEDs] might be better since clear LEDs reflect background light. | + | # Select LED color. I used [https://www.ebay.com/itm/123897764301?var=425000887144 orange clear LEDS] but [https://www.ebay.com/itm/381087033256 orange diffused body LEDs] might be better since clear LEDs reflect background light. |
| − | # I used 1K because modern LEDs are really efficient and can get uncomfortably bright with higher current. Vcc is 3.3V, Orange LED drops ~1.8V. Leaves 1.4V across resistor. Equals 1.4 mA with 1K resistor. | + | # LED ballast resistor. I used 1K because modern LEDs are really efficient and can get uncomfortably bright with higher current. Vcc is 3.3V, Orange LED drops ~1.8V. Leaves 1.4V across resistor. Equals 1.4 mA with 1K resistor. |
# Pick whatever height button you like. I used 9mm tall which is pretty tall but it's what I had sitting around. | # Pick whatever height button you like. I used 9mm tall which is pretty tall but it's what I had sitting around. | ||
| + | # 0.1" pins. Select either [https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2047675.m570.l1313&_nkw=SS12D00G3&_sacat=0 SS12D00G3 3 pin slide switch] or 3 pin headers. | ||
| + | |||
[[File:PDP-8_P458-720pxV.jpg]] | [[File:PDP-8_P458-720pxV.jpg]] | ||
Revision as of 22:54, 23 June 2021
Parts List
| Qty | Value | RefDes | Qty | Value | RefDes | |
|---|---|---|---|---|---|---|
| 19 | LED, 5mm, Orange
Note 1 |
D1-D19 | 1 | Header, Rt Angle, 0.1", 2x25 | J1 | |
| 19 | Res, 1K, 1/4W
Note 2 |
R1-R19 | 7 | Switch, Pushbutton, 6mm
Note 3 |
SW10-SW16 | |
| 21 | Res, 10K, 1/4W | R20-R41 | 14 | SW_SPDT, 3 pin, 0.1" | SW1-SW9,SW17-SW21 |
Notes
- Select LED color. I used orange clear LEDS but orange diffused body LEDs might be better since clear LEDs reflect background light.
- LED ballast resistor. I used 1K because modern LEDs are really efficient and can get uncomfortably bright with higher current. Vcc is 3.3V, Orange LED drops ~1.8V. Leaves 1.4V across resistor. Equals 1.4 mA with 1K resistor.
- Pick whatever height button you like. I used 9mm tall which is pretty tall but it's what I had sitting around.
- 0.1" pins. Select either SS12D00G3 3 pin slide switch or 3 pin headers.
