MEL PICBASIC Forum

Menu
Catalog

PICBASIC Compiler

AMICUS

PIC Programmers

Prototyping PCB

Support

Help

Update Policy

About Us

Legal Stuff (in no particular order)

FAQ

PICBASIC Pro

U2 Programmer

Field Programmer

Hid Maker

Microcode Studio

Experimenter Boards

Community Area

How To

Beginners

Compiler Error Codes

Settings for Beginners

Example Code

Darrel Taylors Works

A/D

Audio

EEPROM

Encoder

Ethernet / Internet

GPS

I2C

Infrared

Interrupts

Keypads

LCD

LED Display

Math

Real Time Clock

R/C

Serial Data

Timers

USART

Other Example Code

USB

Include Files

Video

Useful Links

Electronics Suppliers

Wiki Help

User Projects

Community Competitions

BigPIC4 Dev Board

Aeronautical

Audio & Music

Automotive

Data Logging

Games

Health & Safety

Home & Utility

Infrared

Nautical

Opto & Display

Programming

Radio / RF

Amateur

Robotics

R/C Model

Seasonal

Easter

4th of July

Halloween

Guy Fawkes

Christmas

New Year

Solar

Temperature

Test & Measurement

Other
Recent Forum Posts

Re: InfraRed ramblings

Yeah, these are unipolar steppers, not bipolar.

I'm using the ULN2003 as driver that came with them. I'll be switching to a ULN2803 for my use.
Demon - 16th July 2025, 23:27

Re: InfraRed ramblings

I bought some of those stepper motors you linked above. Really cheap, small with a gearbox, but be aware they are wired so you cannot use them with a standard stepper driver module. These have five...
mark_s - 16th July 2025, 16:38

Re: InfraRed ramblings

Thanks Mark!

I was considering laying a limit switch flat along the outer edge of the disk, and use a notch to catch the limit switch roller. But I'm liking the hall sensor even more:
- no...
Demon - 16th July 2025, 03:24

Re: InfraRed ramblings

You can also use a hall effect IC and a small magnet. The hall effect ic's come in a 3 pin TO-92 package and are easy to interface to your micro.

For example
...
mark_s - 16th July 2025, 00:16

Re: InfraRed ramblings

ARGH! That's what they're called. :D I knew these existed, I just didn't know their names.
Demon - 15th July 2025, 22:53

Re: InfraRed ramblings

Search optical interrupter. These are used often for homing.
...
mark_s - 15th July 2025, 18:29

Re: InfraRed ramblings

There will be minimal light leakage. These will be on either side of a disk, as close as I can get them.

I plan on putting black heatshrink over the LEDs as close as I can to the rotating disk.
...
Demon - 15th July 2025, 03:35

Re: InfraRed ramblings

if there is any ambient light leakage a ir sensor like SEN-19018 would be better than a photo diode, with the bonus of making
led modulation unnecessary too.

if the distance between led and...
richard - 15th July 2025, 02:54

InfraRed ramblings

Using this 940nm LED set on Amazon: https://www.amazon.ca/dp/B01HGIQ8NG

Can I have the transmitter LED on without any pulsing? (resistor values are temporary, did not do any calculations yet)
...
Demon - 15th July 2025, 01:52

How To
Microchip Tips and Tricks
by
ScaleRobotics

View Profile

View Forum Posts

View Articles

Published on - 17th June 2010 17:26 Number of Views: 12150
The link below has the most information about tips and tricks using PIC micro-controllers. The attachment is a smaller version ...

Read More
Presetting Configuration Fuses (PIC Defines) into your Program
by
Melanie

View Profile

View Forum Posts

View Articles

Published on - 20th May 2010 16:27 Number of Views: 12743
1. What are the Configuration Fuses?
2. How can I preset them in my Program?
2.a. When using MeLabs default ...

Read More
Bits, Bytes Words and Arrays
by
Melanie

View Profile

View Forum Posts

View Articles

Published on - 23rd April 2010 19:39 Number of Views: 10475
1. How can I reference a BIT in a BYTE?
2. How can I reference a BIT in a WORD?
3. How can I reference a BIT in a BYTE ARRAY?
4. How can I reference a BIT in a WORD ARRAY?
5. How can I reference a BYTE in a WORD ARRAY?
...

Read More
I’m Running Out of CodeSpace, What Can I Do?
by
Melanie

View Profile

View Forum Posts

View Articles

Published on - 23rd April 2010 19:28 Number of Views: 13394
I’m Running Out of CodeSpace, What can I do?
My progam is too slow - What can I do?

Apart from the obvious and move to a faster PIC with more program memory, there’s a few little known tricks you can try.
...

Read More

Menu

Recent Forum Posts

How To