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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

PICBASIC PRO™ Compiler 3.0 PBP is a BASIC programming language for Microchip's PIC microcontrollers.

Version 3 is a major evolution of this popular product, making it even more capable, stable, and reliable. All the years of development culminate here, with many new capabilities and improvements. Come see why thousands of engineers, educators and hobbyists have depended on PBP for more than a decade.

Supports more than 500 microcontrollers.
Newly revised 300-page manual.
MPLABX compatible

Visit our secure online shop to order

Software activation keys are delivered electronically after purchase.
15 Day Trial Before Activation Key is Required

If installed without an activation code, the software will be fully functional for 15 days.
Read about Product Activation

PBP 3.0 Gold Edition

Supports more than 500 devices.

PBP 3.0 Silver Edition

Supports Mid-Range devices.

Number of computer installations allowed 3
(May be uninstalled and moved. License is for single user.)

Maximum supported clock frequency 64Mhz

Maximum supported clock frequency 20Mhz

Commercial License

What is PBP?

PBP is a BASIC programming language for Microchip's PIC microcontrollers.

It has evolved over the span of 15 years, making it the industry standard in its field. It has become a professional-level development tool for embedded programmers, though it retains the easy-to-learn syntax that makes it popular among experimenters and educators worldwide.
...

Compare Editions

PBP3 is available in THREE editions, Chose the right one for YOU!. From Experimenter - enough for the hobbyist through Silver & GOLD - strong enough for a Pro. Including commercial licenses and annual update packages.

...

Features

PICBASIC PRO™ Compiler 3.0

Familiar BASIC syntax
- IF (condition) THEN / ELSE / ELSEIF /ENDIF
- SELECT CASE
- FOR… NEXT
- DO WHILE/UNTIL

...

MicroCode Studio Plus 5.0

MicroCode Studio Plus 5.0 (compatible with PBP 3.0 or later)
The main editor provides full syntax highliMicroCode Studio Plus is a powerful, visual Integrated Development Environment (IDE) with In Circuit Debugging (ICD) capability designed specifically for PICBASIC PRO™ Compilerghting of your code with context sensitive keyword help and syntax hints. The code explorer allows you to automatically jump to include files, defines, constants, variables, aliases and modifiers, symbols and labels, that are contained within your source code. Full cut, copy, paste and undo is provided, together with search and replace features.
...

Supported Devices

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Product Activation

When installed PBP3 will operate in trial mode for 15 days, we recommend that you TRY PBP3 BEFORE you buy PBP3. Be sure that you are happy with the product and the facilities it offers

After purchasing your PBP3 license, the product may be activated by entering the activation key as prompted by the application, this process should be carried out whilst your host machine has access to the internet. Activation requires that the machine can contact the melabs activation service.
...

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