Project Listing Inquiry
0:46
Here are your own accessible projects. I used the project listing workflow described for
@list_projects to return personal projects, and it supports filtering by scope, owner, or query if you want me to narrow this down nextFirst 10 projects
| Project | Link | UID |
|---|---|---|
| Random Fuchsia Jetpack | /devin-flux/random-fuchsia-jetpack | e5b62178-38d2-48ec-bace-3a98f417a2fa |
| Scattered Violet P.K.E. Meter | /devin-flux/scattered-violet-ppkpep-meter | e8b3a9c4-15c6-4949-9cfc-cfdfb146d31c |
| Junior Silver Memory Implanter | /devin-flux/junior-silver-memory-implanter | e1ada5c7-e69c-4e2f-9e1c-87f48b3dd5dd |
| Naughty Fuchsia Scramble Suit | /devin-flux/naughty-fuchsia-scramble-suit | 172da2d5-fd5f-42be-abc5-c88dab668a17 |
| generic-resistor-part-test | /devin-flux/generic-resistor-part-test | 715da45c-02f5-4bde-8568-8d3836eb161e |
| Lost Tomato Gadget Copterht ac7a 29de | /devin-flux/lost-tomato-gadget-copterht-ac7a-29de | cdf0b323-c340-41f5-9604-b3a32d454e9e |
| PICO Smart Automation Controller NextPCB 1-4 Layer Standard Constraints 9eXN | /devin-flux/pico-smart-automation-controller-nextpcb-1-4-layer-standard-constraints-9exn | 44ecee35-8a69-46ae-8324-08a40b8dcd90 |
| PICO Smart Automation Controller NextPCB 1-4 Layer Standard Constraints ju37 | /devin-flux/pico-smart-automation-controller-nextpcb-1-4-layer-standard-constraints-ju37 | c6969e89-4ee8-4927-8b04-e442b1b3961a |
| PICO Smart Automation Controller NextPCB 1-4 Layer Standard Constraints hk2H | /devin-flux/pico-smart-automation-controller-nextpcb-1-4-layer-standard-constraints-hk2h | 495a9306-7e66-46ab-a15d-634f4f53db51 |
| PICO Smart Automation Controller NextPCB 1-4 Layer Standard Constraints sUFW | /devin-flux/pico-smart-automation-controller-nextpcb-1-4-layer-standard-constraints-sufw | 793d378d-b206-4a9f-9577-1403a017e584 |
Notable projects further down the list
| Project | Link |
|---|---|
| 9V Battery 555 LED Blinker | /devin-flux/9v-battery-555-led-blinker |
| ESP32 USB-C Temp Humidity Node | /devin-flux/esp32-usb-c-temp-humidity-node |
| Solar USB Battery Power Board | /devin-flux/solar-usb-battery-power-board |
| Tri-Source Power Management Board | /devin-flux/tri-source-power-management-board |
| ESP32 Water Flow Meter | /devin-flux/esp32-water-flow-meter |
| USB-C Wi-Fi BLE Env Sensor Node | /devin-flux/usb-c-wi-fi-ble-env-sensor-node |
If you want, I can next:
- list all 50 in a downloadable table
- filter by a keyword like
ESP32,USB-C, or555 - list public or organization projects instead
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Project Specification
Overview
A simple hand-solderable red LED blinker powered by a 9V battery through an on/off switch. The circuit uses an LM555 timer in astable mode to blink the LED at about 1 Hz.
Architecture
Diagram
Design Decisions
- Use a through-hole LM555 in DIP-8 for easy hand soldering.
- Use through-hole axial resistors and radial or disc capacitors for hand assembly.
- Use a 5 mm through-hole red LED.
- Use an SPST on/off switch in series with the battery positive lead.
- Target oscillator frequency: about 1 Hz.
Initial Timing Choice
- Astable equation: f = 1 / (0.693 x (R1 + 2R2) x C)
- Initial values: R1 = 10k, R2 = 68k, C = 10uF
- Estimated frequency: approximately 1 Hz
LED Drive Choice
- Assume red LED forward voltage about 2 V and LM555 output drop about 0.2 V.
- Choose LED current about 10 mA for visibility and battery life.
- Initial resistor estimate: about 680 ohms.
Implementation Requirements
- 9V battery input
- On/off switch
- 1 Hz blinking red LED
- Hand-solderable through-hole components
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