Opto isolate ptt? And other stuff

[jleonards1]

Saw you had some issues with spikes. Not sure which line they are coming on but you could try opto isolate the ptt line. Are the Rx and TX also digital serial data to /from the radio?

on a separate note I’m new to ham and looking for a solution for monitoring temperature remotely. I’m not sure the best way to do this but have arduino mega and some uv5r laying around. Was thinking initially of having the mega broadcast and 440hz tone over the mic channel once a temp threshold is hit. But would be cooler if I could send a 10 character message over gmrs or even a murs channel with actual temp data. Any thoughts on a good way to do it?

thanks for the cool project

[ms48083]

I did a remote temperature monitoring project with an arduino and 4 ds18b20 sensors. But I used wifi to send the data to a hosted mysql database. Maybe not how you want to do it, but I'm happy to share the details. MikeKe8tkc

On Tue, Aug 29, 2023 at 12:27 AM, @.***> wrote:

Saw you had some issues with spikes. Not sure which line they are coming on but you could try opto isolate the ptt line. Are the Rx and TX also digital serial data to /from the radio?

on a separate note I’m new to ham and looking for a solution for monitoring temperature remotely. I’m not sure the best way to do this but have arduino mega and some uv5r laying around. Was thinking initially of having the mega broadcast and 440hz tone over the mic channel once a temp threshold is hit. But would be cooler if I could send a 10 character message over gmrs or even a murs channel with actual temp data. Any thoughts on a good way to do it?

thanks for the cool project

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[jleonards1]

Hello,I have made a simple LORA transmitter and receiver pair but still want to try HAM.  I was looking for schematics of how you connect to the UV5R?  Are they posted somewhere and I missed them?Thanks!Jerry LeonardsSent from my iPhoneOn Aug 29, 2023, at 4:39 AM, Mike Schwedt @.***> wrote: I did a remote temperature monitoring project with an arduino and 4 ds18b20 sensors. But I used wifi to send the data to a hosted mysql database. Maybe not how you want to do it, but I'm happy to share the details. MikeKe8tkc

On Tue, Aug 29, 2023 at 12:27 AM, @.***> wrote:

Saw you had some issues with spikes. Not sure which line they are coming on but you could try opto isolate the ptt line. Are the Rx and TX also digital serial data to /from the radio?

on a separate note I’m new to ham and looking for a solution for monitoring temperature remotely. I’m not sure the best way to do this but have arduino mega and some uv5r laying around. Was thinking initially of having the mega broadcast and 440hz tone over the mic channel once a temp threshold is hit. But would be cooler if I could send a 10 character message over gmrs or even a murs channel with actual temp data. Any thoughts on a good way to do it?

thanks for the cool project

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[dalethomas81]

Hey, Jerry - the schematics are posted here at this link: HamMessenger/Documentation/Schematics/Shield.pdf at master · dalethomas81/HamMessengergithub.comThe terminal connector J3 on HamMessenger allows you to attach whatever radio you want to it. Here’s a link to an image that shows the Baofeng connector pin out: XZddXJPEG Image · 21 KBSent from my iPadOn Oct 4, 2023, at 5:48 PM, jleonards1 @.> wrote: Hello,I have made a simple LORA transmitter and receiver pair but still want to try HAM.  I was looking for schematics of how you connect to the UV5R?  Are they posted somewhere and I missed them?Thanks!Jerry LeonardsSent from my iPhoneOn Aug 29, 2023, at 4:39 AM, Mike Schwedt @.> wrote:

I did a remote temperature monitoring project with an arduino and 4 ds18b20 sensors. But I used wifi to send the data to a hosted mysql database. Maybe not how you want to do it, but I'm happy to share the details. MikeKe8tkc

On Tue, Aug 29, 2023 at 12:27 AM, @.***> wrote:

Saw you had some issues with spikes. Not sure which line they are coming on but you could try opto isolate the ptt line. Are the Rx and TX also digital serial data to /from the radio?

on a separate note I’m new to ham and looking for a solution for monitoring temperature remotely. I’m not sure the best way to do this but have arduino mega and some uv5r laying around. Was thinking initially of having the mega broadcast and 440hz tone over the mic channel once a temp threshold is hit. But would be cooler if I could send a 10 character message over gmrs or even a murs channel with actual temp data. Any thoughts on a good way to do it?

thanks for the cool project

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