Components
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|
2N3904 |
x 13 | |
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2N3906 |
x 13 | |
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Resistor 4.7Kohm |
x 7 | |
|
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Resistor 100Kohm |
x 2 | |
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Resistor 100ohm |
x 1 | |
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Resistor 220ohm |
x 1 | |
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Resistor 820ohm |
x 1 | |
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Resistor 1Kohm |
x 1 | |
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Resistor 3.9Kohm |
x 1 | |
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Resistor 6.8Kohm |
x 1 | |
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Resistor 10Kohm |
x 1 | |
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Resistor 15kOhm |
x 1 | |
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M4 Brass Nut |
x 8 | |
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M4x10 Bolt - Cap Head Allen |
x 8 | |
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M3 Nut |
x 6 | |
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M3x6 Bolt - Cap Head Allen |
x 6 | |
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Knob - 3D Printed |
x 8 | |
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Leg - 3D Printed |
x 2 |
Description
DT555 - Discrete Component 555 timer
This is a 100x65mm 555 timer heavily based on Evil Mad Scientist's Three Fives, almost identical. Buy theirs if you can.
All Three Fives specs should apply. Works between 4V to 15V.
Build instructions:
- Solder the brass nuts to the pads on the back side of the board. Use flux and a high power iron, or a heated plate, or a heat gun or a reflow oven.
- Solder the remaining components according their position. Every component value is labeled in the board.
- Install the 3D printed legs using the M3 bolts and nuts.
- Install the knobs with the M4 bolts.
Schematic and Layout
https://hackaday.io/project/176246-discrete-555-timer
Dec 10,2020
5,479 views
DT555 - Discrete Component 555 timer
Yet another 555 timer built from discrete components.
5479
7
0
Published: Dec 10,2020
Standard PCB
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Under the
Attribution-NonCommercial-ShareAlike (CC BY-NC-SA)
License.
Raspberry Pi 5 7 Inch Touch Screen IPS 1024x600 HD LCD HDMI-compatible Display for RPI 4B 3B+ OPI 5 AIDA64 PC Secondary Screen（Without Speaker）
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