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by Sidintheshed
Tue Feb 12, 2019 9:23 pm
Forum: Beginners
Topic: Basic connections to GPIO pins
Replies: 21
Views: 1004

Re: Basic connections to GPIO pins

Just one more bit of advice, Learn coding by all means, But not at the expense of learning electronics. In future Coder’s will be “ Two A Penny.” Electronic engineers will be Worth their weight in lead-free solder ;-) The main reason for the Pi existing was the shortage of people learning to code. ...
by Sidintheshed
Tue Feb 12, 2019 7:48 am
Forum: Beginners
Topic: Basic connections to GPIO pins
Replies: 21
Views: 1004

Re: Basic connections to GPIO pins

Many thanks for these replies. Lots of useful stuff here. I can see that I need to develop my knowledge and understanding of the pi and of Python considerably before I can make an informed choice of a HAT to do the things I want. There’s a massive gap between my current knowledge and the knowledge ...
by Sidintheshed
Tue Feb 12, 2019 7:45 am
Forum: Beginners
Topic: Basic connections to GPIO pins
Replies: 21
Views: 1004

Re: Basic connections to GPIO pins

I’ll also need to find somewhere to buy electronic components in small quantities. Pity about Maplin. I buy most of my components via ebay now. Some of the prices are so low that I can often buy ten or more for what one would have cost at Maplin. That means I have plenty of spares for if anything g...
by Sidintheshed
Tue Feb 12, 2019 7:43 am
Forum: Beginners
Topic: Basic connections to GPIO pins
Replies: 21
Views: 1004

Re: Basic connections to GPIO pins

] I’m not a great believer in using potential dividers as voltage levellers I like to use opto isolators or transistor circuits, no guesswork. If you use a potential divider to switch current above low signal Level, make sure the current through the divider is ten times Greater than you want to tak...
by Sidintheshed
Mon Feb 11, 2019 10:16 pm
Forum: Beginners
Topic: Basic connections to GPIO pins
Replies: 21
Views: 1004

Re: Basic connections to GPIO pins

The Raspberry Pi is not PLUG & PLAY. Only experiment With the GPIOs when you know what you are doing I suggest you use the GPIOs low current /low voltage Out/puts to switch buffer stages that need higher Voltage and Current, Employ some OHMS LAW In your project, Do some work on a breadboard Using 3...
by Sidintheshed
Sun Feb 10, 2019 7:44 am
Forum: Beginners
Topic: Basic connections to GPIO pins
Replies: 21
Views: 1004

Re: Basic connections to GPIO pins

Many thanks for these replies. Lots of useful stuff here. I can see that I need to develop my knowledge and understanding of the pi and of Python considerably before I can make an informed choice of a HAT to do the things I want. There’s a massive gap between my current knowledge and the knowledge l...
by Sidintheshed
Sat Feb 09, 2019 8:25 am
Forum: Beginners
Topic: Basic connections to GPIO pins
Replies: 21
Views: 1004

Re: Basic connections to GPIO pins

Hi again. Thanks for these replies. I’m now working through the links given. The Python syntax isn’t miles away from BBC BASIC so it’s not going to be a problem although I’ve yet to find a list of syntax. Hopefully, one of those links will lead me to something. I could really benefit from a local us...
by Sidintheshed
Fri Feb 08, 2019 10:56 am
Forum: Beginners
Topic: Basic connections to GPIO pins
Replies: 21
Views: 1004

Basic connections to GPIO pins

I’m new to Raspberry Pi and I initially want to experiment with using the GPIO pins to switch low voltages and to sense open or closed circuits. I have done this before with BBC micros etc but am aware there is no protection interface if I connect directly to GPIO pins. I have bought a P2711A Pi-EzC...
by Sidintheshed
Tue Feb 05, 2019 11:44 am
Forum: Beginners
Topic: STICKY: Pictorial Buying Guide for the Raspberry Pi
Replies: 149
Views: 261529

Re: STICKY: Pictorial Buying Guide for the Raspberry Pi

Hi. I’m new to Raspberry Pi and need to work out what I need to get started. The pictorial guide has been very useful so far. My plan is to use the pi to control and monitor basic inputs/outputs. Outputs to switch on/off a few ordinary relays. Inputs to monitor whether a circuit is open or closed. ...
by Sidintheshed
Mon Feb 04, 2019 4:15 pm
Forum: Beginners
Topic: STICKY: Pictorial Buying Guide for the Raspberry Pi
Replies: 149
Views: 261529

Re: STICKY: Pictorial Buying Guide for the Raspberry Pi

Hi. I’m new to Raspberry Pi and need to work out what I need to get started. The pictorial guide has been very useful so far. My plan is to use the pi to control and monitor basic inputs/outputs. Outputs to switch on/off a few ordinary relays. Inputs to monitor whether a circuit is open or closed. I...

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