Topics

Is there a Raduino replacement with supply voltage, FWD & REF readings ?

Razvan (M0HZH)
 

I tried to search the specs of various Raduino alternatives, but I couldn't find the right one, so ...

I'm thinking about building a portable uBITX mostly for SOTA activities and information on battery status and antenna matching is very important. To avoid reinventing the wheel, I'm looking for an alternative Raduino design / kit that has already implemented these readings:

- supply voltage indication
- forward power
- reflected power

The standard Raduino only has one unused analog pin, which with minimal switching could be used for two roles (to read supply voltage on RX and REF indication on TX) and a bit of code rewriting would get that information on the display. An even better solution would be to add an I2C ADC with multiple inputs that would also allow reading RX signal strength level and maybe other useful information (final stage temperature, current drain etc), but the 1602 display quickly becomes too small for that.

So before I fire up Kicad and start designing stuff, has anyone else been on this path before ?

Cheers,
Razvan M0HZH / YO9IRF

Evan Hand
 

The short answer is yes, I have read post on members implementing what you are planning. I do not have the threads saved, however a search by topic might get the for you.

In the meantime, check out the hams key web sight by Dr Lee, KD8CEC. He has implemented expanded functionality through a second Nano connected through I2C from the one on the Raduino. The second Nano gives quite a few options.

FWIW
73
Evan
AC9TU

Ashhar Farhan
 

That is what the Antuino is. 


On Wed 11 Sep, 2019, 11:20 PM Evan Hand, <elhandjr@...> wrote:
The short answer is yes, I have read post on members implementing what you are planning. I do not have the threads saved, however a search by topic might get the for you.

In the meantime, check out the hams key web sight by Dr Lee, KD8CEC. He has implemented expanded functionality through a second Nano connected through I2C from the one on the Raduino. The second Nano gives quite a few options.

FWIW
73
Evan
AC9TU

Evan Hand
 

Ashhar,

I believe that Razvan is looking for a Summits On The Air capable rig with battery and SWR monitor. The Antuino would be a great portable instrument to measure the antenna, but not too good as an SSB/cw transceiver. That is unless you have plans to replace the Raduino with a modified Antuino?  That would be very interesting. 

Evan
AC9TU

Evan Hand
 

That did remind me of another possibility. Look up the JackAl board. It is a replacement for the Raduino with a higher power processor and I believe more IO. 

Search the the web for it. 

Evan
AC9TU

John (vk2eta)
 

On Wed, Sep 11, 2019 at 09:01 AM, Razvan Fatu wrote:
- supply voltage indication
- forward power
- reflected power
Hello Razvan,

I had the same objective of creating a portable rig. The easiest and cheapest option I found was to add a second Arduino (a Mini in my case but can be a Nano, the sketch is the same). They communicate over the I2C bus with the 2nd Arduino a slave on the bus.

The advantage is that you get a lot of extra pins but most importantly a new lot of memory for per-processing the data you collect as the memory gets full pretty quick on the Raduino's Nano as you add features. The 2nd Nano can be set to sleep most of the time, adding limited extra current.

I added a FWD/REV and SWR measurement, a battery voltage indication on the display and a two level low battery alarm (with TX inhibit on the 2nd low level), plus a few other features that I thought were useful for a portable rig (Output power control in SSB, ATU, Android/iPhone style mic/headphone with PTT on/off via the call/hangup button, etc..).

I still use the same display (has some advantages on power consumption and readability in the sun) but I alternate the display between not urgent data (like battery voltage and Step Size+Key selection). On Tx I replace the second line by real-time Forward power and SWR. See attached pictures (no antenna handy, so no actual values, sorry).

This may give you some ideas:

For the SWR bridge I uses Don's (ND6T) design described here: http://bitxhacks.blogspot.com/2017/03/nd6ts-forward-and-reverse-power-meter.html
It is sensitive enough to give you readings from about a watt, so useful across the range. Not as precise as Farhan's solution in the Antuino, but ok for my needs.

The latest drawings and sketches for both the main Arduino and the 2nd one are in the file section at; https://groups.io/g/BITX20/files/Variations%20on%20KD8CEC%20Software%20%28by%20VK2ETA%29%20+%20ATU%20sketch
They are highly configurable by enabling/disabling the functions you want.

The post describing the functions:
https://groups.io/g/BITX20/topic/16657839#46254
and the latest version:
https://groups.io/g/BITX20/topic/17836001#46953

Please be mindful that these sketches are for V3-V4 boards. For V5, the relay switching function and the 2nd IF frequencies need to be changed.

Hope that helps.

All the best,

73, John (VK2ETA)


Nat Goldberg
 

This shd be interesting. 

On Sep 11, 2019, at 6:22 PM, John (vk2eta) <vk2eta@...> wrote:

On Wed, Sep 11, 2019 at 09:01 AM, Razvan Fatu wrote:
- supply voltage indication
- forward power
- reflected power
Hello Razvan,

I had the same objective of creating a portable rig. The easiest and cheapest option I found was to add a second Arduino (a Mini in my case but can be a Nano, the sketch is the same). They communicate over the I2C bus with the 2nd Arduino a slave on the bus.

The advantage is that you get a lot of extra pins but most importantly a new lot of memory for per-processing the data you collect as the memory gets full pretty quick on the Raduino's Nano as you add features. The 2nd Nano can be set to sleep most of the time, adding limited extra current.

I added a FWD/REV and SWR measurement, a battery voltage indication on the display and a two level low battery alarm (with TX inhibit on the 2nd low level), plus a few other features that I thought were useful for a portable rig (Output power control in SSB, ATU, Android/iPhone style mic/headphone with PTT on/off via the call/hangup button, etc..).

I still use the same display (has some advantages on power consumption and readability in the sun) but I alternate the display between not urgent data (like battery voltage and Step Size+Key selection). On Tx I replace the second line by real-time Forward power and SWR. See attached pictures (no antenna handy, so no actual values, sorry).

This may give you some ideas:

For the SWR bridge I uses Don's (ND6T) design described here: http://bitxhacks.blogspot.com/2017/03/nd6ts-forward-and-reverse-power-meter.html
It is sensitive enough to give you readings from about a watt, so useful across the range. Not as precise as Farhan's solution in the Antuino, but ok for my needs.

The latest drawings and sketches for both the main Arduino and the 2nd one are in the file section at; https://groups.io/g/BITX20/files/Variations%20on%20KD8CEC%20Software%20%28by%20VK2ETA%29%20+%20ATU%20sketch
They are highly configurable by enabling/disabling the functions you want.

The post describing the functions:
https://groups.io/g/BITX20/topic/16657839#46254
and the latest version:
https://groups.io/g/BITX20/topic/17836001#46953

Please be mindful that these sketches are for V3-V4 boards. For V5, the relay switching function and the 2nd IF frequencies need to be changed.

Hope that helps.

All the best,

73, John (VK2ETA)

<IMG20190912080324.jpg><IMG20190912080232.jpg><IMG20190912080230.jpg>

Razvan (M0HZH)
 

Thank you for the replies.

I've looked at the CEC and JackAl expansions, they are nice but add unnecessary complexity for this specific purpose and neither seems to have all these minor but specific features I'm looking for. Looking for a "less is more" approach if possible.

@ John, thank you for all the information, that's very close to what I'm looking for. I like the way you use the limited display area, I think this is quite close to what I need. I need to spend a bit of time on it.

Razvan M0HZH

John (vk2eta)
 

No problems Razvan, glad the information may be useful.

Ask if you need any clarifications.

73, John

Gary Anderson
 

Don't forget to also look at W0WEB's board offerings. The BITeensio and a nano replacement: http://www.w0eb.com/Page2.html
It may not meet your 'less is more' criteria, but  still worth a look... to see another option of what has already been done.
Rgds,
Gary

Michael Hagen
 

I have a UBit replacement Raduino, many of the group bought them.

It is much improved and is a direct replacement.? It has 16 Additional I/O bits using a Microchip

Expander.? Ada Fruit library works fine.? The I2C Address is also settable with jumpers.

It has 2 header connector with the I/O bits and power and ground.

I call it RaduinUMax.? Nano Plugs in, Power supply protection, Heat sink too.? LCD exactly place as original.

Would be great for adding more UBit functions.

Private email me for more info......motdog@...

Mike, WA6ISP

On 9/11/2019 5:24 PM, Nat Goldberg wrote:
This shd be interesting.?

On Sep 11, 2019, at 6:22 PM, John (vk2eta) <vk2eta@...> wrote:

On Wed, Sep 11, 2019 at 09:01 AM, Razvan Fatu wrote:
- supply voltage indication
- forward power
- reflected power
Hello Razvan,

I had the same objective of creating a portable rig. The easiest and cheapest option I found was to add a second Arduino (a Mini in my case but can be a Nano, the sketch is the same). They communicate over the I2C bus with the 2nd Arduino a slave on the bus.

The advantage is that you get a lot of extra pins but most importantly a new lot of memory for per-processing the data you collect as the memory gets full pretty quick on the Raduino's Nano as you add features. The 2nd Nano can be set to sleep most of the time, adding limited extra current.

I added a FWD/REV and SWR measurement, a battery voltage indication on the display and a two level low battery alarm (with TX inhibit on the 2nd low level), plus a few other features that I thought were useful for a portable rig (Output power control in SSB, ATU, Android/iPhone style mic/headphone with PTT on/off via the call/hangup button, etc..).

I still use the same display (has some advantages on power consumption and readability in the sun) but I alternate the display between not urgent data (like battery voltage and Step Size+Key selection). On Tx I replace the second line by real-time Forward power and SWR. See attached pictures (no antenna handy, so no actual values, sorry).

This may give you some ideas:

For the SWR bridge I uses Don's (ND6T) design described here: http://bitxhacks.blogspot.com/2017/03/nd6ts-forward-and-reverse-power-meter.html
It is sensitive enough to give you readings from about a watt, so useful across the range. Not as precise as Farhan's solution in the Antuino, but ok for my needs.

The latest drawings and sketches for both the main Arduino and the 2nd one are in the file section at; https://groups.io/g/BITX20/files/Variations%20on%20KD8CEC%20Software%20%28by%20VK2ETA%29%20+%20ATU%20sketch
They are highly configurable by enabling/disabling the functions you want.

The post describing the functions:
https://groups.io/g/BITX20/topic/16657839#46254
and the latest version:
https://groups.io/g/BITX20/topic/17836001#46953

Please be mindful that these sketches are for V3-V4 boards. For V5, the relay switching function and the 2nd IF frequencies need to be changed.

Hope that helps.

All the best,

73, John (VK2ETA)

<IMG20190912080324.jpg><IMG20190912080232.jpg><IMG20190912080230.jpg>

-- 
Mike Hagen, WA6ISP
10917 Bryant Street
Yucaipa, Ca. 92399
(909) 918-0058
PayPal ID  "MotDog@..."
Mike@...

MVS Sarma
 

I fear  using serial lcd communication could cause more noise for the receiver. 


On Thu, 12 Sep 2019, 7:10 pm Michael Hagen via Groups.Io, <motdog=verizon.net@groups.io> wrote:

I have a UBit replacement Raduino, many of the group bought them.

It is much improved and is a direct replacement.? It has 16 Additional I/O bits using a Microchip

Expander.? Ada Fruit library works fine.? The I2C Address is also settable with jumpers.

It has 2 header connector with the I/O bits and power and ground.

I call it RaduinUMax.? Nano Plugs in, Power supply protection, Heat sink too.? LCD exactly place as original.

Would be great for adding more UBit functions.

Private email me for more info......motdog@...

Mike, WA6ISP

On 9/11/2019 5:24 PM, Nat Goldberg wrote:
This shd be interesting.?

On Sep 11, 2019, at 6:22 PM, John (vk2eta) <vk2eta@...> wrote:

On Wed, Sep 11, 2019 at 09:01 AM, Razvan Fatu wrote:
- supply voltage indication
- forward power
- reflected power
Hello Razvan,

I had the same objective of creating a portable rig. The easiest and cheapest option I found was to add a second Arduino (a Mini in my case but can be a Nano, the sketch is the same). They communicate over the I2C bus with the 2nd Arduino a slave on the bus.

The advantage is that you get a lot of extra pins but most importantly a new lot of memory for per-processing the data you collect as the memory gets full pretty quick on the Raduino's Nano as you add features. The 2nd Nano can be set to sleep most of the time, adding limited extra current.

I added a FWD/REV and SWR measurement, a battery voltage indication on the display and a two level low battery alarm (with TX inhibit on the 2nd low level), plus a few other features that I thought were useful for a portable rig (Output power control in SSB, ATU, Android/iPhone style mic/headphone with PTT on/off via the call/hangup button, etc..).

I still use the same display (has some advantages on power consumption and readability in the sun) but I alternate the display between not urgent data (like battery voltage and Step Size+Key selection). On Tx I replace the second line by real-time Forward power and SWR. See attached pictures (no antenna handy, so no actual values, sorry).

This may give you some ideas:

For the SWR bridge I uses Don's (ND6T) design described here: http://bitxhacks.blogspot.com/2017/03/nd6ts-forward-and-reverse-power-meter.html
It is sensitive enough to give you readings from about a watt, so useful across the range. Not as precise as Farhan's solution in the Antuino, but ok for my needs.

The latest drawings and sketches for both the main Arduino and the 2nd one are in the file section at; https://groups.io/g/BITX20/files/Variations%20on%20KD8CEC%20Software%20%28by%20VK2ETA%29%20+%20ATU%20sketch
They are highly configurable by enabling/disabling the functions you want.

The post describing the functions:
https://groups.io/g/BITX20/topic/16657839#46254
and the latest version:
https://groups.io/g/BITX20/topic/17836001#46953

Please be mindful that these sketches are for V3-V4 boards. For V5, the relay switching function and the 2nd IF frequencies need to be changed.

Hope that helps.

All the best,

73, John (VK2ETA)

<IMG20190912080324.jpg><IMG20190912080232.jpg><IMG20190912080230.jpg>

-- 
Mike Hagen, WA6ISP
10917 Bryant Street
Yucaipa, Ca. 92399
(909) 918-0058
PayPal ID  "MotDog@..."
Mike@...

Michael Hagen
 

There may be a miss-understanding?

I used standard Raduino LCD connections (parallel) on RaduinoUMax.

The Microchip part provides 16 I/O bits for options.?? I used this part because the library

already exists and works (Ada Fruit).

Its I2C lines are less that a few inches to the part on a shielded ground plane PCB.

The RaduioUMax is a drop in replacement, you don't have to use the extra I/O.

The LCD is exactly where it was on the original and uses the same connections.

The feature is only there if you want more I/O bits.?? No I2C comes off the PCB unless you

connect to the I2C header connector.

TNX

Mike, WA6ISP


On 9/12/2019 7:04 AM, MVS Sarma wrote:
I fear?? using serial lcd communication could cause more noise for the receiver.??

On Thu, 12 Sep 2019, 7:10 pm Michael Hagen via Groups.Io, <motdog=verizon.net@groups.io> wrote:

I have a UBit replacement Raduino, many of the group bought them.

It is much improved and is a direct replacement.? It has 16 Additional I/O bits using a Microchip

Expander.? Ada Fruit library works fine.? The I2C Address is also settable with jumpers.

It has 2 header connector with the I/O bits and power and ground.

I call it RaduinUMax.? Nano Plugs in, Power supply protection, Heat sink too.? LCD exactly place as original.

Would be great for adding more UBit functions.

Private email me for more info......motdog@...

Mike, WA6ISP

On 9/11/2019 5:24 PM, Nat Goldberg wrote:
This shd be interesting.?

On Sep 11, 2019, at 6:22 PM, John (vk2eta) <vk2eta@...> wrote:

On Wed, Sep 11, 2019 at 09:01 AM, Razvan Fatu wrote:
- supply voltage indication
- forward power
- reflected power
Hello Razvan,

I had the same objective of creating a portable rig. The easiest and cheapest option I found was to add a second Arduino (a Mini in my case but can be a Nano, the sketch is the same). They communicate over the I2C bus with the 2nd Arduino a slave on the bus.

The advantage is that you get a lot of extra pins but most importantly a new lot of memory for per-processing the data you collect as the memory gets full pretty quick on the Raduino's Nano as you add features. The 2nd Nano can be set to sleep most of the time, adding limited extra current.

I added a FWD/REV and SWR measurement, a battery voltage indication on the display and a two level low battery alarm (with TX inhibit on the 2nd low level), plus a few other features that I thought were useful for a portable rig (Output power control in SSB, ATU, Android/iPhone style mic/headphone with PTT on/off via the call/hangup button, etc..).

I still use the same display (has some advantages on power consumption and readability in the sun) but I alternate the display between not urgent data (like battery voltage and Step Size+Key selection). On Tx I replace the second line by real-time Forward power and SWR. See attached pictures (no antenna handy, so no actual values, sorry).

This may give you some ideas:

For the SWR bridge I uses Don's (ND6T) design described here: http://bitxhacks.blogspot.com/2017/03/nd6ts-forward-and-reverse-power-meter.html
It is sensitive enough to give you readings from about a watt, so useful across the range. Not as precise as Farhan's solution in the Antuino, but ok for my needs.

The latest drawings and sketches for both the main Arduino and the 2nd one are in the file section at; https://groups.io/g/BITX20/files/Variations%20on%20KD8CEC%20Software%20%28by%20VK2ETA%29%20+%20ATU%20sketch
They are highly configurable by enabling/disabling the functions you want.

The post describing the functions:
https://groups.io/g/BITX20/topic/16657839#46254
and the latest version:
https://groups.io/g/BITX20/topic/17836001#46953

Please be mindful that these sketches are for V3-V4 boards. For V5, the relay switching function and the 2nd IF frequencies need to be changed.

Hope that helps.

All the best,

73, John (VK2ETA)

<IMG20190912080324.jpg><IMG20190912080232.jpg><IMG20190912080230.jpg>

-- 
Mike Hagen, WA6ISP
10917 Bryant Street
Yucaipa, Ca. 92399
(909) 918-0058
PayPal ID  "MotDog@..."
Mike@...
-- 
Mike Hagen, WA6ISP
10917 Bryant Street
Yucaipa, Ca. 92399
(909) 918-0058
PayPal ID  "MotDog@..."
Mike@...

James Baird
 

Can someone Please tell me where the TX-RX on the LED hooks up on the uBITX Board?
Thanks  Jim Baird W5OMM
HOT IN TEXAS

----- Original Message -----
From: Razvan Fatu <razvanfatu@...>
To: BITX20@groups.io
Sent: Thu, 12 Sep 2019 06:45:53 -0400 (EDT)
Subject: Re: [BITX20] Is there a Raduino replacement with supply voltage, FWD & REF readings ?

Thank you for the replies.

I've looked at the CEC and JackAl expansions, they are nice but add unnecessary complexity for this specific purpose and neither seems to have all these minor but specific features I'm looking for. Looking for a "less is more" approach if possible.

@ John, thank you for all the information, that's very close to what I'm looking for. I like the way you use the limited display area, I think this is quite close to what I need. I need to spend a bit of time on it.

Razvan M0HZH



Michael Hagen
 

Relay K1 has 12v connected to Tx or Rx.?? You can get it off the schematic anywhere Tx or Rx is connected.

Use a current limiting resistor for Led indicators.

Mike, WA6ISP

On 9/12/2019 8:46 AM, James Baird wrote:
Can someone Please tell me where the TX-RX on the LED hooks up on the uBITX Board?
Thanks?? Jim Baird W5OMM
HOT IN TEXAS

----- Original Message -----
From: Razvan Fatu <razvanfatu@...>
To: BITX20@groups.io
Sent: Thu, 12 Sep 2019 06:45:53 -0400 (EDT)
Subject: Re: [BITX20] Is there a Raduino replacement with supply voltage, FWD & REF readings ?

Thank you for the replies.

I've looked at the CEC and JackAl expansions, they are nice but add unnecessary complexity for this specific purpose and neither seems to have all these minor but specific features I'm looking for. Looking for a "less is more" approach if possible.

@ John, thank you for all the information, that's very close to what I'm looking for. I like the way you use the limited display area, I think this is quite close to what I need. I need to spend a bit of time on it.

Razvan M0HZH



-- 
Mike Hagen, WA6ISP
10917 Bryant Street
Yucaipa, Ca. 92399
(909) 918-0058
PayPal ID  "MotDog@..."
Mike@...

James Baird
 

Thanks Mike
Jim

----- Original Message -----
From: Michael Hagen via Groups.Io <motdog@...>
To: BITX20@groups.io
Sent: Thu, 12 Sep 2019 12:03:27 -0400 (EDT)
Subject: Re: [BITX20] Is there a Raduino replacement with supply voltage, FWD & REF readings ?

Relay K1 has 12v
connected to Tx or Rx.?? You can get it off the schematic
anywhere Tx or Rx is connected.

Use a current limiting
resistor for Led indicators.

Mike, WA6ISP

On 9/12/2019 8:46 AM, James Baird
wrote:
Can someone Please tell me where the TX-RX on the LED hooks
up on the uBITX Board?
Thanks?? Jim Baird W5OMM
HOT IN TEXAS

----- Original Message -----

From: Razvan Fatu <razvanfatu@...>

To: BITX20@groups.io

Sent: Thu, 12 Sep 2019 06:45:53 -0400 (EDT)

Subject: Re: [BITX20] Is there a Raduino replacement with supply
voltage, FWD & REF readings ?

Thank you for the replies.

I've looked at the CEC and JackAl expansions, they are nice
but add unnecessary complexity for this specific purpose and
neither seems to have all these minor but specific features I'm
looking for. Looking for a "less is more" approach if possible.

@ John, thank you for all the information, that's very close
to what I'm looking for. I like the way you use the limited
display area, I think this is quite close to what I need. I need
to spend a bit of time on it.

Razvan M0HZH



-- 
Mike Hagen, WA6ISP
10917 Bryant Street
Yucaipa, Ca. 92399
(909) 918-0058
PayPal ID "MotDog@..."Mike@...



James Baird
 

Thanks
I'm using the resistors that came with the kit. At 81 I think I'm Loosing It.
73
Jim

----- Original Message -----
From: Michael Hagen via Groups.Io <motdog@...>
To: BITX20@groups.io
Sent: Thu, 12 Sep 2019 12:03:27 -0400 (EDT)
Subject: Re: [BITX20] Is there a Raduino replacement with supply voltage, FWD & REF readings ?

Relay K1 has 12v
connected to Tx or Rx.?? You can get it off the schematic
anywhere Tx or Rx is connected.

Use a current limiting
resistor for Led indicators.

Mike, WA6ISP

On 9/12/2019 8:46 AM, James Baird
wrote:
Can someone Please tell me where the TX-RX on the LED hooks
up on the uBITX Board?
Thanks?? Jim Baird W5OMM
HOT IN TEXAS

----- Original Message -----

From: Razvan Fatu <razvanfatu@...>

To: BITX20@groups.io

Sent: Thu, 12 Sep 2019 06:45:53 -0400 (EDT)

Subject: Re: [BITX20] Is there a Raduino replacement with supply
voltage, FWD & REF readings ?

Thank you for the replies.

I've looked at the CEC and JackAl expansions, they are nice
but add unnecessary complexity for this specific purpose and
neither seems to have all these minor but specific features I'm
looking for. Looking for a "less is more" approach if possible.

@ John, thank you for all the information, that's very close
to what I'm looking for. I like the way you use the limited
display area, I think this is quite close to what I need. I need
to spend a bit of time on it.

Razvan M0HZH



-- 
Mike Hagen, WA6ISP
10917 Bryant Street
Yucaipa, Ca. 92399
(909) 918-0058
PayPal ID "MotDog@..."Mike@...