License

Tags
Recommend Projects

Timer switch using 555 and relay

3 years ago 2098
  • Description
  • Documents
  • BOM
  • Attachments
  • Members
  • Comments

Description

A simple circuit that powers a led strip when the momentary switch is pressed, then shuts it down automatically after XX seconds.

Not tested yet. There is a potentiometer to adjust the length of the delay but I need the light to be ON for at least 30 seconds. I may have to change the values of capacitor C1 and resistor R1. A 100uF capacitor and a 500K potentiometer should give an adjustable delay of near 0 seconds to 55 seconds.

I know almost nothing about electronics but this looks simple enough, even for me.

Documents

Timer switch schematic

Timer switch PCB 2

Timer switch PCB 3

Timer switch PCB 4

BOM

ID Name Designator Footprint Quantity Manufacturer Part Manufacturer Supplier Supplier Part Price LCSC Assembly Mounted SeeedStudio
1 1M R1 TRIM_POT_PTH 1
2 100k R2 R3 1
3 10u C1 CP_8X13MM 1
4 0.01u C2 C1 1
5 1N4148 D1 DO35-7 1
6 Omron-G5LE-Relay_SPDT RL1 OMRON_G5LE_SPDT_RELAY 1
7 12V input J2 H2-5.0-10.5X8.0MM 1 SeeedStudio 320110031
8 555 IC1 DIP08 1
9 SIP2 P1 HDR1X2 1
10 4terminal_300v_screw_terminal P2 SCREW TERMINAL 5MM 4P 1

Attachments

None

Members

Success
The owner does not allow comments in this project now

Comments (0)

goToTop
你现在访问的是EasyEDA海外版,使用建立访问速度更快的国内版 https://lceda.cn(需要重新注册)
如果需要转移工程请在个人中心 - 工程 - 工程高级设置 - 下载工程,下载后在https://lceda.cn/editor 打开保存即可。
有问题联系QQ 3001956291 不再提醒
svg-battery svg-battery-wifi svg-books svg-more svg-paste svg-pencil svg-plant svg-ruler svg-share svg-user svg-logo-cn svg-double-arrow
We use cookies to offer you a better experience. Detailed information on the use of cookies on this website is provided in our Privacy Policy. By using this site, you consent to the use of our cookies.