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And here’s a table explaining the 555 timer’s pin numbers:
Pin number | Pin name |
1 | Ground |
2 | Trigger |
3 | Output |
4 | Reset |
5 | Control Voltage |
6 | Threshold |
7 | Discharge |
8 | Supply Voltage |
To flash the LED, the 555 timer will be in astable mode, which means that the output won’t stay the same; it constantly alternates between being at VCC (the supply voltage) and ground (0V). Thus, the LED will appear as though it is blinking.
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To gain access to our project repository on GitHub, send screenshots of your finished schematic and layout to Ari Wasch or Logan Hartford. Rayyan Mahmood Yuchen Lin
Questions? Comments? Feedback on this tutorial for improvement? Let Ari and Logan Rayyan Mahmood Yuchen Lin n know!
Food for Thought
What can you add to make the layout more efficient? (e.g., minimise layer changes for traces, making the board more compact etc.)
As it is, the circuit you’ve made won’t actually work if you actually made it. What do you have to add to get it to work as intended?