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Recent Forum Posts

NE555 with solenoid

I'd like to activate a solenoid for a brief moment. Does this timer look correct?

9978

- I added a large cap alongside the solenoid; value is just preliminary.
- the opto is to isolate the...
Demon Today, 01:38

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

lester

GPS Shield

The Amicus GPS shield contains a multi channel GPS receiver, as well as a 16k byte (128 kbit) serial (I2C) eeprom, and a 3 Volt, 12mm battery socket in order to maintain the receiver's built-in RTC (Real Time Clock).

Available in our on-line store

...

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Comprehensive documentation

Published on - 30th August 2011 04:03

Comprehensive documentation and a helpful and friendly support environment, make using Amicus18 an easy and enjoyable ...

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Companion Sheild

The entry level shield is labelled The Companion Shield. This is a PCB laid out in the pattern of a solderless breadboard. The holes are single sided, which means that components can easily be removed using solder mop braid, or a solder vacuum tool, if a mistake is made, or components need to be re-used.

The (PBP3) Companion Shield Manual iCan be downloaded from here

See the Companion Shield in our on-line shop
...

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What is Amicus18?

Amicus is a multifunction development system inspired by the popular Arduino board, however, the Amicus board uses a Microchip PIC^® microcontroller instead of an Atmel AVR^tm type.

Comprehensive documentation and a helpful and friendly support environment, make using Amicus18 an easy and enjoyable experience for beginners and seasoned programmers.

Forum Moderator Mackrakit (Dave) very kindly ported the Proton BASIC Compiler code over to PBP3 and modified the original AMicus18 docuemts for PBP3 users.

...

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The Amicus18 Board

Amicus18 is an embedded system platform based on a simple open hardware design for a single-board microcontroller, with embedded I/O support and a standard programming language. A great Partner for PBP3 and Perfect for the PBP3 Experimenter.

AMICUS18 in our on-line shop

...

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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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Supported Devices

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3 x 7 segments LED display

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Dice Project

PICBASIC PRO Electronic Dice project for the PIC10F202 or PIC10F206. Written by Melanie Newman

...

Read More
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lester