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by mypiandi
Thu May 30, 2019 2:30 am
Forum: Automation, sensing and robotics
Topic: LED Watt / Amp question
Replies: 3
Views: 821

Re: LED Watt / Amp question

Thank you, those were very helpful suggestions! I used a multimeter and measured 0.71 Amp, which seems close enough to the calculated value. I had indeed hooked up all 5 lights, so it may well be that the power supply restricted the power somehow to not heat itself up. I will buy an appropriate powe...
by mypiandi
Tue May 28, 2019 12:10 pm
Forum: Automation, sensing and robotics
Topic: LED Watt / Amp question
Replies: 3
Views: 821

LED Watt / Amp question

Hi, I'm controlling five 12V LED lights via a relay from my Pi. These are the lights: https://www.ebay.com/itm/10W-LED-Flood-Light-12V-Spot-Light-Cool-White-Outdoor-Garden-Landscape-Spot-Lamp/273647100206?hash=item3fb6a3612e:g:XxMAAOSwEzxYc74E The LEDs are rated 10 Watt each and I'm trying to work o...
by mypiandi
Sat Apr 20, 2019 11:20 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Relay Showing Voltage on Input Pin
Replies: 4
Views: 979

Re: Relay Showing Voltage on Input Pin

Once again thank you so much, for taking the time. That's all the information I needed. I hooked it up to the 5V and it all works as it should.
Happy Easter!
by mypiandi
Fri Apr 19, 2019 11:31 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Relay Showing Voltage on Input Pin
Replies: 4
Views: 979

Re: Relay Showing Voltage on Input Pin

Thank you for your reply and explanation. I'm only learning so I'm not fully grasping it yet, I hope you don't mind if I ask more specifically: 1. Is what I'm experiencing normal behaviour? 2. Will it have adverse effects on the Pi if I feed 2.5V into the GPIO pin even though I have it configured fo...
by mypiandi
Fri Apr 19, 2019 7:50 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Relay Showing Voltage on Input Pin
Replies: 4
Views: 979

Relay Showing Voltage on Input Pin

Hi, I'm trying to use this relay with my Pi Zero: http://www.techydiy.org/wp-content/uploads/2017/02/opto-isolated-2-relay-module-connections-crop.jpg The 4 pins on the top right corner are connected as follows: VCC -> Pi 5V IN2 -> not connected IN1 -> not connected (eventually this will be connecte...
by mypiandi
Tue Apr 09, 2019 4:39 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: GPIOzero Button Problem
Replies: 2
Views: 1047

Re: GPIOzero Button Problem

Thank you for your quick reply, you were spot on!
It just takes 3-4 seconds to set everything up once the program starts, so if I wait with the first button press 5 seconds, then it works as it should.
Once again thank you for solving this for me!
by mypiandi
Tue Apr 09, 2019 12:21 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: GPIOzero Button Problem
Replies: 2
Views: 1047

GPIOzero Button Problem

Hi, I'm trying to use Python/GPIzero to interface with a 12V 4-Channel Remote Control Relay. When I start the program, I have to press the remote button 2,3 or 4 times before output is being shown. Once it starts showing output though, it works flawlessly as it should. I wonder if GPIOzero does some...
by mypiandi
Thu May 15, 2014 10:49 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Shutting down on low power
Replies: 11
Views: 3324

Re: Shutting down on low power

Thanks Ivan,

I ordered a couple of 6N137 now and will try them out. What type of pull up resister should I use? ... then I'll get a handful of those too.
By the way, had a read through your FF32 website, they look great, once the final product becomes available, I'll be in the market for one.
by mypiandi
Thu May 15, 2014 5:17 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Shutting down on low power
Replies: 11
Views: 3324

Re: Shutting down on low power

Hi, I don't require the visual feedback, so I'm more than happy to un-solder an LED and put something else in its place. I just checked and optocoupler are cheap to come buy, however, they all seem to have for pins/legs? How would I hook one of these up? You typically have the optocoupler with two ...
by mypiandi
Thu May 15, 2014 5:12 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Shutting down on low power
Replies: 11
Views: 3324

Re: Shutting down on low power

Thank you for the quick reply. That's correct, it is powered from the same 5V source. If I don't have to worry about ground, does this mean I only have to hook up one cable between LED and GPIO (sorry, software guy new to electronics project)? I thought I would always need two cables to close the c...
by mypiandi
Wed May 14, 2014 8:16 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Shutting down on low power
Replies: 11
Views: 3324

Re: Shutting down on low power

Thanks everyone, that's great info! Being a programmer, I'm way in over my head with reading circuit schematics or doing those fancy voltage calculations (sorry). I'm trying to learn though, which is what this is all about. So I understand that the 5V is a problem if exposed to the GPIO. I just ran ...
by mypiandi
Tue May 13, 2014 8:18 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Shutting down on low power
Replies: 11
Views: 3324

Re: Shutting down on low power

Thank you for the quick reply. That's correct, it is powered from the same 5V source. If I don't have to worry about ground, does this mean I only have to hook up one cable between LED and GPIO (sorry, software guy new to electronics project)? I thought I would always need two cables to close the ci...
by mypiandi
Tue May 13, 2014 5:25 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Shutting down on low power
Replies: 11
Views: 3324

Shutting down on low power

I'm trying to have my battery-powered Pi shut down gracefully on low power, so I got myself one of these $1.50 devices of Ebay: http://www.ebay.com/itm/KA2284-Audio-Level-Indicator-Power-Level-Indicator-Level-Indicating-Module-/331197312845?pt=LH_DefaultDomain_0&hash=item4d1ce5ef4d It all works grea...

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