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by ray.leiter
Tue Dec 08, 2020 2:25 pm
Forum: Troubleshooting
Topic: [solved] Connecting Pi bluetooth to Arduino and HC-05
Replies: 26
Views: 3684

Re: [solved] Connecting Pi bluetooth to Arduino and HC-05

yes, if you have a serious hobby, it is better not to buy arduino ble sense - these are new boards and they have not yet been fully debugged by the Italians. I debugged my remote control for the camera in a week, which is a lot for such a simple task (although I also wrote a program in C for Rpi W ...
by ray.leiter
Tue Dec 08, 2020 1:26 pm
Forum: Troubleshooting
Topic: [solved] Connecting Pi bluetooth to Arduino and HC-05
Replies: 26
Views: 3684

Re: [solved] Connecting Pi bluetooth to Arduino and HC-05

BLE is ideal for your purposes - well, if you don't need a more "long-range" device. The blue tooth is not designed to transmit large information. However, there is https://en.wikipedia.org/wiki/LoRa or https://ru.wikipedia.org/wiki/Zigbee But it's easier to buy a ready-made device from t...
by ray.leiter
Tue Dec 08, 2020 1:37 am
Forum: Troubleshooting
Topic: [solved] Connecting Pi bluetooth to Arduino and HC-05
Replies: 26
Views: 3684

Re: [solved] Connecting Pi bluetooth to Arduino and HC-05

Wow, super cool. So you have some experience. :D In fact, that product IS BLE (or LE as they call it.) Nordic has developed, on their own, a BLE service for serial comms. Nice, I suppose, if you really want BLE. Sounds like you don't, and I agree with you. With that device, you have two options: 1....
by ray.leiter
Tue Dec 08, 2020 12:48 am
Forum: Troubleshooting
Topic: [solved] Connecting Pi bluetooth to Arduino and HC-05
Replies: 26
Views: 3684

Re: [solved] Connecting Pi bluetooth to Arduino and HC-05

Thank you, thank you and again. That was a very well written reply -- something often lacking in online forums. I now understand completely what you meant. At this point in my life, I am going to steer clear of BLE. It is the other BT I'm interested in. I guess it is the Serial Port Profile(SPP) whi...
by ray.leiter
Mon Dec 07, 2020 11:12 pm
Forum: Troubleshooting
Topic: [solved] Connecting Pi bluetooth to Arduino and HC-05
Replies: 26
Views: 3684

Re: [solved] Connecting Pi bluetooth to Arduino and HC-05

I've had success with the HM-10, which is basically a BLE HC-05. I don't have one of the Adafruit BLE microprocessors yet, tho it's on my list. Very little of this thread will apply, as there is no BLE serial communications service. You'd need to figure out BLE programming. I'm totally new to the t...
by ray.leiter
Mon Dec 07, 2020 6:54 pm
Forum: Troubleshooting
Topic: [solved] Connecting Pi bluetooth to Arduino and HC-05
Replies: 26
Views: 3684

Re: [solved] Connecting Pi bluetooth to Arduino and HC-05

This is very helpful to me.
This is pretty much what I want to do as well.
My only question, at this point, is: Has anyone done this with one of the Blue Tooth BLE devices available from Adafruit in New York City rather than the HC-05 or one of it's other varieties?
by ray.leiter
Tue Mar 03, 2015 10:24 pm
Forum: General discussion
Topic: RCA Video Quality
Replies: 17
Views: 3238

Re: RCA Video Quality

Does DVI include audio as does HDMI?
by ray.leiter
Tue Mar 03, 2015 10:07 pm
Forum: General discussion
Topic: RCA Video Quality
Replies: 17
Views: 3238

Re: RCA Video Quality

Thanks to everyone for the reply, I guess I'll have to stick with HDMI and maybe get an HDMI-DVI converter. It's running on a 42" NTSC TV, so the text being readable from a distance matters. I wonder if you might want to consider an HDMI to VGA converter instead of HDMI to DVI? Many TVs can ha...
by ray.leiter
Tue Mar 03, 2015 9:59 pm
Forum: General discussion
Topic: RCA Video Quality
Replies: 17
Views: 3238

Re: RCA Video Quality

I was looking through the posts and saw yours and thought I'd comment. You will be ok using an RCA (composite video connection)! That was all many of us had we we began. I tried the RCA connection from my Rpi B+ to my Panasonic 40 inch plasma TV and it was very good. Of course it isn't the quality o...
by ray.leiter
Sun Mar 01, 2015 6:31 pm
Forum: Teaching and learning resources
Topic: Teaching Networking concepts
Replies: 4
Views: 1455

Re: Teaching Networking concepts

Thanks to all who helped me. I think I finally figured out what they're trying to say when they claim the networking lessons are for KS3 and KS4. Apparently KS3 and KS4 students are those in the secondary school system who are between the ages of approximately 11 and 16 years old. I must say, I find...
by ray.leiter
Sun Mar 01, 2015 12:38 pm
Forum: Teaching and learning resources
Topic: Teaching Networking concepts
Replies: 4
Views: 1455

Re: Teaching Networking concepts

Thanks for your help. I now see what the Key Stage concept is, but I still can't figure out what age student the Networking Lessons are intended for. According to the info you provided, KS2 for primary school is roughly 8-12 years old. I wonder if that is the intended audience for the networking les...
by ray.leiter
Sun Mar 01, 2015 12:14 pm
Forum: General discussion
Topic: STICKY: Introduce yourself!
Replies: 3885
Views: 301107

Re: Introduce yourself!

Philip; I would be glad to help you as I am able to. I have a Model B+ and have made the necessary arrangements to use it via an older laptop as opposed to using a separate keyboard, mouse and monitor. I am retired from 36 years working in IT for the US Navy. I have some degree of competence with el...
by ray.leiter
Sun Mar 01, 2015 12:04 pm
Forum: Teaching and learning resources
Topic: Teaching Networking concepts
Replies: 4
Views: 1455

Teaching Networking concepts

I'm not familiar with the notion of "Keystage 1 2..." in the UK educational system. I was reading the information under Resources->Teach->Networking Lessons on the web site where I encountered the Keystage concept. I was trying to figure out what age students the lessons were intended for....
by ray.leiter
Fri Feb 13, 2015 3:56 am
Forum: General discussion
Topic: STICKY: Introduce yourself!
Replies: 3885
Views: 301107

Re: Introduce yourself!

Hello; I'm Ray from Mechanicsburg, PA, USA (I really like alliteration). I was trained in digital electronics by the USAF in 1962 as a technician on Project 465L. Project 465L was the Strategic Air Command's Command and Control System used to manage Atlas ICBMs (at that time). I majored in Mathemat...
by ray.leiter
Wed Feb 11, 2015 11:50 am
Forum: General discussion
Topic: STICKY: Introduce yourself!
Replies: 3885
Views: 301107

Re: Introduce yourself!

Hello; I'm Ray from Mechanicsburg, PA, USA (I really like alliteration). I was trained in digital electronics by the USAF in 1962 as a technician on Project 465L. Project 465L was the Strategic Air Command's Command and Control System used to manage Atlas ICBMs (at that time). I majored in Mathemati...

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