Summary of PIC Stroboscope using PIC12F675 microcontroller
This article details the construction of a PIC-based stroboscope using a PIC12F675 microcontroller to visually slow down moving objects like fans. The project utilizes standard electronic components including a perf board, voltage regulator, capacitors, resistors, LEDs, a potentiometer, and a transistor, powered by a 6V battery or regulated supply.
Parts used in the PIC Stroboscope:
- Perf Board
- 6 volt battery pack (AA)
- 7805 regulator
- 220uF capacitor
- 2 0.1 ceramic disc capacitors
- 2n2222 NPN bi-polar junction transistor
- 7 680ohm Resistors
- Potentiometer (100K recommended)
- 7 LEDs
- PIC Programmer
- PIC12f675 Microprocessor
PIC Stroboscope
We are going to build this today. I am using the PIC12f675 from Microchip. THer is a video below to show the inner workings.
Step 1: Get the Parts
You will need:
Perf Board
6 volt battery pack (AA) (If you want, it can have a power switch and cover.)
7805 regulator (I use it in case I use a power supply.)
220uF capacitor
2 0.1 ceramic disc capacitors (it should say 104 on it.)
2n2222 NPN bi-polar junction transistor (use this transistor or a power transistor…I say this because 2n2222 can drive up to 1 amp but really, a transistor with 500mA will work.)
7 680ohm Resistors (I say seven because it has 1 “power led” See Notes at the bottom to hear why. This other LED also strobes like the others.)
potentiometer (I like 100K…gives me good range)
7 LEDs ( I prefer blue but any bright LED will work.)
PIC Programmer (I used the old fashioned QuickWriter.)
…and most importantly the PIC12f675 Microprocessor!
For more detail: PIC Stroboscope using PIC12F675 microcontroller
- What is the main purpose of this project?
To use the stroboscope principle to visually slow down moving objects like fans. - Which microcontroller is used for this build?
The project uses the PIC12f675 from Microchip. - Can I use a power supply instead of batteries?
Yes, the 7805 regulator allows you to use a power supply if desired. - What type of transistor can drive the circuit?
A 2n2222 NPN bipolar junction transistor works, or any transistor rated for 500mA. - Why are seven resistors needed?
Seven resistors are required because there are seven LEDs, including one designated as a power LED that also strobes. - What is the recommended potentiometer value?
A 100K potentiometer is preferred as it provides a good range. - Does the color of the LED matter?
No, while blue is preferred, any bright LED will work.
