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by dibolero
Fri Aug 17, 2018 1:33 pm
Forum: Networking and servers
Topic: Configure pi to only connect to one network
Replies: 1
Views: 233

Configure pi to only connect to one network

Would it be possible to force the rasperry pi zero W to only connect to one network? We're having a problem right now with the connection because it connects to an open wifi within our area that we don't have internet access to. We've set in the WPA supplicant the configuration of only our network h...
by dibolero
Wed Jul 18, 2018 10:07 am
Forum: Camera board
Topic: Extension Cable for Raspberry Pi Zero W MINI camera module
Replies: 1
Views: 351

Extension Cable for Raspberry Pi Zero W MINI camera module

Just a quick question since I couldn't find a clear answer online! Will this extension cable work for the raspberry pi zero w mini camera? Here's a photo of the extension : https://www.lazada.com.ph/products/mini-webcam-extension-cable-camera-module-cable-for-raspberry-pi-zero-13-version-and-w-mode-...
by dibolero
Tue Jul 17, 2018 11:13 am
Forum: Automation, sensing and robotics
Topic: Controlling homemade solenoids using Rpi Z W
Replies: 53
Views: 4461

Re: Controlling homemade solenoids using Rpi Z W

We wanted to follow that however since you used an 8 pin darlington on the instructions we were scared we might mess up somewhere so we decided to look for one online. Luckily we've managed to make it work with a higher battery and we're now using 9V relays with a 9V battery instead. We didn't have ...
by dibolero
Mon Jul 16, 2018 1:14 pm
Forum: Automation, sensing and robotics
Topic: Controlling homemade solenoids using Rpi Z W
Replies: 53
Views: 4461

Re: Controlling homemade solenoids using Rpi Z W

Soo we're probably stuck again. We got the ULN2003APG and followed this diagram https://imgur.com/a/cXkL5Wq on youtube except we didn't use the headers. Unfortunately the switch works on LEDS but not on our solenoid(We tested solenoids again because it was hard to find 12v batteries for the relays)....
by dibolero
Sat Jul 14, 2018 11:46 am
Forum: Automation, sensing and robotics
Topic: Controlling homemade solenoids using Rpi Z W
Replies: 53
Views: 4461

Re: Controlling homemade solenoids using Rpi Z W

We live in the Philippines and yeah it's kinda shocking how stuff is so hard to get here even the pi's prices are ridiculously marked up . Luckily we were able to go to an electronics shop and the owner helped us out and gave us some tips. We bought 12V Relays as they were the smallest ones there th...
by dibolero
Sat Jul 14, 2018 4:01 am
Forum: Automation, sensing and robotics
Topic: Controlling homemade solenoids using Rpi Z W
Replies: 53
Views: 4461

Re: Controlling homemade solenoids using Rpi Z W

It's very unlikely that we can find a neodymium magnet to use as a core here so we'll probably stick with the lollipop core and just compensate by using a bigger voltage battery to power the solenoids. Just a quick question about the transistors since we've decided to use them. Given that the PI can...
by dibolero
Fri Jul 13, 2018 12:36 pm
Forum: Automation, sensing and robotics
Topic: Controlling homemade solenoids using Rpi Z W
Replies: 53
Views: 4461

Re: Controlling homemade solenoids using Rpi Z W

We just noticed awhile ago that the pi isn't detecting our camera so it's either we broke the camera or broke the camera board because of what we did yesterday
by dibolero
Fri Jul 13, 2018 12:34 pm
Forum: Automation, sensing and robotics
Topic: Controlling homemade solenoids using Rpi Z W
Replies: 53
Views: 4461

Re: Controlling homemade solenoids using Rpi Z W

0.5 seconds to go up and 0.5 seconds to go down would be ideal. The biggest goal we're trying to achieve for this is to make it as compact as possible. Have you made some really tiny solenoids? How big are they? Right now they're half an inch long and only have 300 turns so they're pretty thin as w...
by dibolero
Fri Jul 13, 2018 2:22 am
Forum: Automation, sensing and robotics
Topic: Controlling homemade solenoids using Rpi Z W
Replies: 53
Views: 4461

Re: Controlling homemade solenoids using Rpi Z W

0.5 seconds to go up and 0.5 seconds to go down would be ideal. The biggest goal we're trying to achieve for this is to make it as compact as possible.
by dibolero
Thu Jul 12, 2018 2:06 pm
Forum: Automation, sensing and robotics
Topic: Controlling homemade solenoids using Rpi Z W
Replies: 53
Views: 4461

Re: Controlling homemade solenoids using Rpi Z W

How fast do the pins need to move? I sonder if you could use miniature linear stepper motors. example on eBay Advantage of a screw is it will not give under finger pressure and takes no power to hold position. Possible disadvantage is might be too slow to move. There are lots of variants larger or ...
by dibolero
Thu Jul 12, 2018 1:38 pm
Forum: Automation, sensing and robotics
Topic: Controlling homemade solenoids using Rpi Z W
Replies: 53
Views: 4461

Re: Controlling homemade solenoids using Rpi Z W

What is the motivation for making your own solenoids? As a learning experience that's a good thing to do but you can buy them for £1 each and they probably work better. https://www.ebay.co.uk/itm/DC-4-5V-40g-3mm-Open-Frame-Actuator-Push-Pull-Solenoid-Electromagnet-ZBUK/142800577556?hash=item213f93e...
by dibolero
Thu Jul 12, 2018 1:35 pm
Forum: Automation, sensing and robotics
Topic: Controlling homemade solenoids using Rpi Z W
Replies: 53
Views: 4461

Re: Controlling homemade solenoids using Rpi Z W

Just to clarify, was this system wrongly designed? https://www.hackster.io/hitherejoe/braillebox-braille-news-reader-e86060 This is a braille project on hackster, he used 100ohm resistors with 5v solenoids and this was basically our starting point and basis of what we did with our project. I am afr...
by dibolero
Thu Jul 12, 2018 1:44 am
Forum: Automation, sensing and robotics
Topic: Controlling homemade solenoids using Rpi Z W
Replies: 53
Views: 4461

Re: Controlling homemade solenoids using Rpi Z W

So we took a stupid risk and tried connecting the homemade solenoid to the pi without a resistor and surprisingly it didn't do anything. The 3 volt battery was able to move the pin so isn't the 3.3v gpio pin supposed to be enough? You don't understand enough about what you are trying to do. Every e...
by dibolero
Wed Jul 11, 2018 3:53 pm
Forum: Automation, sensing and robotics
Topic: Controlling homemade solenoids using Rpi Z W
Replies: 53
Views: 4461

Re: Controlling homemade solenoids using Rpi Z W

So we took a stupid risk and tried connecting the homemade solenoid to the pi without a resistor and surprisingly it didn't do anything.
The 3 volt battery was able to move the pin so isn't the 3.3v gpio pin supposed to be enough?
by dibolero
Wed Jul 11, 2018 2:17 pm
Forum: Automation, sensing and robotics
Topic: Controlling homemade solenoids using Rpi Z W
Replies: 53
Views: 4461

Re: Controlling homemade solenoids using Rpi Z W

So I guess our only possible options would be to buy ready made mini solenoids right?

I really appreciate your answers thanks alot!
by dibolero
Wed Jul 11, 2018 1:55 pm
Forum: Automation, sensing and robotics
Topic: Controlling homemade solenoids using Rpi Z W
Replies: 53
Views: 4461

Re: Controlling homemade solenoids using Rpi Z W

Not sure why you think adding a resistor would be helpful? You need a transistor circuit or relay board to switch the 3V battery to the solenoid. The RPi GPIO is then used to switch the transistor or relay board. Google for hundreds of tutorials YT etc. We were trying to simulate youtube LED circui...
by dibolero
Wed Jul 11, 2018 1:19 pm
Forum: Automation, sensing and robotics
Topic: Controlling homemade solenoids using Rpi Z W
Replies: 53
Views: 4461

Re: Controlling homemade solenoids using Rpi Z W

Our solenoid is really small, its around half an inch long and has around 200 turns. It works with a 3v battery without using any resistor however it doesn't work with a 100 ohm one. What do you mean by a power circuitry? Not sure why you think adding a resistor would be helpful? You need a transis...
by dibolero
Wed Jul 11, 2018 12:39 pm
Forum: Automation, sensing and robotics
Topic: Controlling homemade solenoids using Rpi Z W
Replies: 53
Views: 4461

Re: Controlling homemade solenoids using Rpi Z W

Our solenoid is really small, its around half an inch long and has around 200 turns.
It works with a 3v battery without using any resistor however it doesn't work with a 100 ohm one.

What do you mean by a power circuitry?
by dibolero
Wed Jul 11, 2018 12:15 pm
Forum: Automation, sensing and robotics
Topic: Controlling homemade solenoids using Rpi Z W
Replies: 53
Views: 4461

Controlling homemade solenoids using Rpi Z W

Me and my friends are working on a single braille cell as part of a competition here in our country. However based on our research, the PI's GPIO pins can only output a maximum of 16maH or else we'll risk breaking it. Would it be safe to use the GPIO pins to run a current through our solenoids? We'v...

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