Bean support 8Mhz

[craiglynn85]

Hi, trying to get this working on a Punchthrough Bean with additional 5V regulator, unfortunately the Bean only runs at 8Mhz, any tips on how to get it working?

[glynhudson]

Hi, emonLib should at 8Mhz. I think you will need to compile for 8Mhz using modified optiboot bootloder we use this on the emonPi which has an ATmega328 running at 8Mhz

On 1 December 2014 at 23:43, craiglynn85 notifications@github.com wrote:

Hi, trying to get this working on a Punchthrough Bean with additional 5V regulator, unfortunately the Bean only runs at 8Mhz, any tips on how to get it working?

— Reply to this email directly or view it on GitHub https://github.com/openenergymonitor/EmonLib/issues/9.

Glyn Hudson

Home: +44(0)1286479462 Mobile: +44(0)7769871550 Office: +44(0)1248672607

http://openenergymonitor.org http://megni.co.uk http://adventuresplusnorthwales.blogspot.com

[glynhudson]

what problem are you experiencing?

On 2 December 2014 at 13:51, Glyn Hudson glyn.hudson@gmail.com wrote:

Hi, emonLib should at 8Mhz. I think you will need to compile for 8Mhz using modified optiboot bootloder we use this on the emonPi which has an ATmega328 running at 8Mhz

On 1 December 2014 at 23:43, craiglynn85 notifications@github.com wrote:

Hi, trying to get this working on a Punchthrough Bean with additional 5V regulator, unfortunately the Bean only runs at 8Mhz, any tips on how to get it working?

— Reply to this email directly or view it on GitHub https://github.com/openenergymonitor/EmonLib/issues/9.

Glyn Hudson

Home: +44(0)1286479462 Mobile: +44(0)7769871550 Office: +44(0)1248672607

http://openenergymonitor.org http://megni.co.uk http://adventuresplusnorthwales.blogspot.com

Glyn Hudson

Home: +44(0)1286479462 Mobile: +44(0)7769871550 Office: +44(0)1248672607

http://openenergymonitor.org http://megni.co.uk http://adventuresplusnorthwales.blogspot.com

[craiglynn85]

Let me look into that, thanks!

[craiglynn85]

The problem is that Irms is reading up on the 22/23s while on the bean but the exact same circuit on the Uno is down at 0.05. Do you think this is a 8Mhz issue or something else?

[glynhudson]

Yes, sounds like could be issue with adc readings at lower speed. Mm not sure how to solve, try posting on our forums..

• sent from my mobile device On 2 Dec 2014 15:50, "craiglynn85" notifications@github.com wrote:

The problem is that Irms is reading up on the 22/23s while on the bean but the exact same circuit on the Uno is down at 0.05. Do you think this is a 8Mhz issue or something else?

— Reply to this email directly or view it on GitHub https://github.com/openenergymonitor/EmonLib/issues/9#issuecomment-65251656 .

[craiglynn85]

Would changing the number of samples have any effect? It seems as if I alter emon1.calcIrms to increase the number of samples the Irms value drops in the serial.

[craiglynn85]

Worked it out, the analog pins on the Bean are known as "A0" and "A1" so I had to pass "emon1.current(A1,111.1)" instead of just "emon1.current(1,111.1)"