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hamishcunningham / pi-tronics

Source code for Raspberry Pi GATE projects.
http://pi.gate.ac.uk/
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Batteries not lasting as long as they did #12

Closed kez1710 closed 10 years ago

kez1710 commented 10 years ago

I am using the batteries that were supplied by you and a set from maplin. Until last night both sets ran for about 12 hrs each. The set that you supplied now only last 10 minutes fully charged and the ones from maplin are running for about an hour before they are running low. I am presuming something has malfunctioned on the board but I'm not sure

Please help.

Thanks Kerry

hamishcunningham commented 10 years ago

Kerry, this looks like the batteries have been over-discharged :-(

What configuration profile were you using?

Best

Hamish

kez1710 commented 10 years ago

Hi I am still using the default configuration for rechargeable batteries.

Thanks Kerry

Sent from my iPad

On 11 Aug 2014, at 15:24, Hamish Cunningham notifications@github.com wrote:

Kerry, this looks like the batteries have been over-discharged :-(

What configuration profile were you using?

Best

Hamish

— Reply to this email directly or view it on GitHub.

hamishcunningham commented 10 years ago

hi kerry

can you send me the output of

sudo mopicli -e

?

I can send you a new set of batteries, but want to check that it isn't a config before sending a new board?

cheers

h

On 11 August 2014 22:21, kez1710 notifications@github.com wrote:

Hi I am still using the default configuration for rechargeable batteries.

Thanks Kerry

Sent from my iPad

On 11 Aug 2014, at 15:24, Hamish Cunningham notifications@github.com wrote:

Kerry, this looks like the batteries have been over-discharged :-(

What configuration profile were you using?

Best

Hamish

— Reply to this email directly or view it on GitHub.

— Reply to this email directly or view it on GitHub https://github.com/hamishcunningham/pi-tronics/issues/12#issuecomment-51842617 .

Hamish Cunningham http://pi.gate.ac.uk/ http://hamish.gate.ac.uk/ http://gate.ac.uk/ Professor of Computer Science, University of Sheffield, UK +44 7920 765 455

kez1710 commented 10 years ago

HI Hamish, here is the configuration settings you asked for. pi@raspberrypi ~ $ sudo mopicli -e Firmware version: 3.10 Serial number: 193 Status word: 4105 Verbose status: Source #1 active Source good (green led) NiMH battery profile Source #1 good Source #2 low/not present Current source voltage: 9867 Source #1 voltage: 9867 Source #2 voltage: 0 Combined conf: Source type: Rechargeable batteries Maximum voltage: 11200 mV Good voltage: 9800 mV Low voltage: 8800 mV Critical voltage: 8000 mV Source #1 conf: matching, see above Source #2 conf: matching, see above Power on delay: 0 seconds Shutdown delay: 0 seconds pi@raspberrypi ~ $

Many thanks

Kerry

On 13 August 2014 08:38, Hamish Cunningham notifications@github.com wrote:

hi kerry

can you send me the output of

sudo mopicli -e

?

I can send you a new set of batteries, but want to check that it isn't a config before sending a new board?

cheers

h

On 11 August 2014 22:21, kez1710 notifications@github.com wrote:

Hi I am still using the default configuration for rechargeable batteries.

Thanks Kerry

Sent from my iPad

On 11 Aug 2014, at 15:24, Hamish Cunningham notifications@github.com

wrote:

Kerry, this looks like the batteries have been over-discharged :-(

What configuration profile were you using?

Best

Hamish

— Reply to this email directly or view it on GitHub.

— Reply to this email directly or view it on GitHub < https://github.com/hamishcunningham/pi-tronics/issues/12#issuecomment-51842617>

.

Hamish Cunningham http://pi.gate.ac.uk/ http://hamish.gate.ac.uk/ http://gate.ac.uk/ Professor of Computer Science, University of Sheffield, UK +44 7920 765 455

— Reply to this email directly or view it on GitHub https://github.com/hamishcunningham/pi-tronics/issues/12#issuecomment-52022909 .

guruthree commented 10 years ago

All of that looks to be in order.

We think we might be able to gain some insight if we see the discharge curve your batteries have. That is to say, if we plot a graph of voltage over time. Could you download the script I've written, https://github.com/hamishcunningham/pi-tronics/blob/master/simbamon/utils/mopilog.py and run it after booting with fully charged batteries? It should create a mopilog.csv file, which you can then upload to pastebin.net after the MoPi shuts your RaspberryPi down. (It will need https://github.com/hamishcunningham/pi-tronics/blob/master/simbamon/mopiapi.py in the same directory.)

kez1710 commented 10 years ago

Ok thanks, I shall have a go at that tomorrow On 14 Aug 2014 15:12, "Fred" notifications@github.com wrote:

All of that looks to be in order.

We think we might be able to gain some insight if we see the discharge curve your batteries have. That is to say, if we plot a graph of voltage over time. Could you download the script I've written, https://github.com/hamishcunningham/pi-tronics/blob/master/simbamon/utils/mopilog.py and run it after booting with fully charged batteries? It should create a mopilog.csv file, which you can then upload to pastebin.net after the MoPi shuts your RaspberryPi down. (It will need https://github.com/hamishcunningham/pi-tronics/blob/master/simbamon/mopiapi.py in the same directory.)

— Reply to this email directly or view it on GitHub https://github.com/hamishcunningham/pi-tronics/issues/12#issuecomment-52187984 .

kez1710 commented 10 years ago

Hi guys, I have uploaded the mopilog.csv file to pastebin. What do I do now?

Thanks Kerry

On 14 August 2014 14:12, Fred notifications@github.com wrote:

All of that looks to be in order.

We think we might be able to gain some insight if we see the discharge curve your batteries have. That is to say, if we plot a graph of voltage over time. Could you download the script I've written, https://github.com/hamishcunningham/pi-tronics/blob/master/simbamon/utils/mopilog.py and run it after booting with fully charged batteries? It should create a mopilog.csv file, which you can then upload to pastebin.net after the MoPi shuts your RaspberryPi down. (It will need https://github.com/hamishcunningham/pi-tronics/blob/master/simbamon/mopiapi.py in the same directory.)

— Reply to this email directly or view it on GitHub https://github.com/hamishcunningham/pi-tronics/issues/12#issuecomment-52187984 .

guruthree commented 10 years ago

You should have gotten a link for the upload? We'll need that so we can access the file.

kez1710 commented 10 years ago

Hi, here is the link for my log file. http://pastebin.com/t5nD9zZg

On 23 August 2014 10:13, Fred notifications@github.com wrote:

You should have gotten a link for the upload? We'll need that so we can access the file.

— Reply to this email directly or view it on GitHub https://github.com/hamishcunningham/pi-tronics/issues/12#issuecomment-53148851 .

guruthree commented 10 years ago

graph According to this it looks like the batteries should still have a charge? After the MoPi cuts-off, can you power it back on using the power button? If you first disconnect the batteries, wait a few seconds, and then reconnect them, can you then power on the MoPi? Will the batteries light-up a flash light? If you have a digital multimeter, what voltage do the batteries read?

kez1710 commented 10 years ago

Hi, The pi is powering on again. I don't have a multimeter to hand but I can get hold of one within the next couple of days if that would help.

Thanks Kerry

On 24 August 2014 14:46, Fred notifications@github.com wrote:

[image: graph] https://cloud.githubusercontent.com/assets/3973507/4023615/f0bf1a46-2b9c-11e4-801b-3b084626f8a9.png According to this it looks like the batteries should still have a charge? After the MoPi cuts-off, can you power it back on using the power button? If you first disconnect the batteries, wait a few seconds, and then reconnect them, can you then power on the MoPi? Will the batteries light-up a flash light? If you have a digital multimeter, what voltage do the batteries read?

— Reply to this email directly or view it on GitHub https://github.com/hamishcunningham/pi-tronics/issues/12#issuecomment-53195740 .

LuboBonchev commented 10 years ago

Hi. Let me join the discussion as well. Very strange are the voltage spikes at the beginnig of the curve, also one at the end. If the batteries are NOT charged after the previous run (assume it finished with MoPi flahing the red LED), would you do one more run and record the voltages again? Thank you!

hamishcunningham commented 10 years ago

That discharge curve looks pretty healthy to me? (And the spikes might be collection or load artefacts?) The runtime was around 3 hours, which is also reasonable?

guruthree commented 10 years ago

It looks like the first half of a discharge curve to me. Notably there's no knee to the curve that would indicate the batteries fully discharged. I too am interested to see what happens if you leave the batteries as is, start up the MoPi, and start logging again. I would expect to see the second half of the curve until it either cuts out again, or the MoPi shuts off properly due to low voltage. (Here the status before it dies is 4105 - Source 1 Active, Green LED, Source 1 Good.)

LuboBonchev commented 10 years ago

The spikes at the beginning are strange for me. What kind of dynamic load that can be? Quite long time and then to settle? Also interesting the one spike at the end of the curve.

An hour ago I suggested the same as Fred is saying: to run second logging if the batterires are NOT charged in the mean time. Expect to see much shorter time interval and the knee of the discharging curve. Put also the question how the first logging has been finished: by MoPi flashing red?

Lubo

-----Original Message----- From: Fred [mailto:notifications@github.com] Sent: Monday, August 25, 2014 1:17 PM To: hamishcunningham/pi-tronics Cc: Lubo Bonchev Subject: Re: [pi-tronics] Batteries not lasting as long as they did (#12)

It looks like the first half of a discharge curve to me. Notably there's no knee to the curve that would indicate the batteries fully discharged. I too am interested to see what happens if you leave the batteries as in, start up the MoPi, and start logging again. I would expect to see the second half of the curve until it either cuts out again, or the MoPi shuts off properly due to low voltage. (Here the status before it dies is 4105 - Source 1 Active, Green LED, Source 1 Good.)

— Reply to this email directly or view https://github.com/hamishcunningham/pi-tronics/issues/12#issuecomment-53248354 it on GitHub. https://github.com/notifications/beacon/7250458__eyJzY29wZSI6Ik5ld3NpZXM6QmVhY29uIiwiZXhwaXJlcyI6MTcyNDU4MTA0NiwiZGF0YSI6eyJpZCI6MzkzNDU2MTl9fQ==--13bb05fff5d49c83275a2f2f4d4e97c9185b0a1e.gif

guruthree commented 10 years ago

According to the log it just cut-off, no red LED. I wonder if it's something as simple as the wires in the screw terminals have come loose?

LuboBonchev commented 10 years ago

Can be 6.0V cut-off which the report can't catch. If spikes similar to those at beginning suddenly came up at that moment. But where are they coming from? What kind of dynamic load that can be? BTW: your idea about bad wire connection can do similar problems because of high resistance at the connection point ... Let see the second log file. Lubo -----Original Message----- From: Fred [mailto:notifications@github.com] Sent: Monday, August 25, 2014 1:57 PM To: hamishcunningham/pi-tronics Cc: Lubo Bonchev Subject: Re: [pi-tronics] Batteries not lasting as long as they did (#12)

According to the log it just cut-off, no red LED. I wonder if it's something as simple as the wires in the screw terminals have come loose?

— Reply to this email directly or view https://github.com/hamishcunningham/pi-tronics/issues/12#issuecomment-53250999 it on GitHub. https://github.com/notifications/beacon/7250458__eyJzY29wZSI6Ik5ld3NpZXM6QmVhY29uIiwiZXhwaXJlcyI6MTcyNDU4MzQzNywiZGF0YSI6eyJpZCI6MzkzNDU2MTl9fQ==--69be15a90578f16a3688cd7410190497780880b2.gif

kez1710 commented 10 years ago

Hi I have checked all the wiring and it is still tight within the screw terminals

Sent from my iPad

On 25 Aug 2014, at 13:19, Lubo Bonchev notifications@github.com wrote:

Can be 6.0V cut-off which the report can't catch. If spikes similar to those at beginning suddenly came up at that moment. But where are they coming from? What kind of dynamic load that can be? BTW: your idea about bad wire connection can do similar problems because of high resistance at the connection point ... Let see the second log file. Lubo -----Original Message----- From: Fred [mailto:notifications@github.com] Sent: Monday, August 25, 2014 1:57 PM To: hamishcunningham/pi-tronics Cc: Lubo Bonchev Subject: Re: [pi-tronics] Batteries not lasting as long as they did (#12)

According to the log it just cut-off, no red LED. I wonder if it's something as simple as the wires in the screw terminals have come loose?

— Reply to this email directly or view https://github.com/hamishcunningham/pi-tronics/issues/12#issuecomment-53250999 it on GitHub. https://github.com/notifications/beacon/7250458__eyJzY29wZSI6Ik5ld3NpZXM6QmVhY29uIiwiZXhwaXJlcyI6MTcyNDU4MzQzNywiZGF0YSI6eyJpZCI6MzkzNDU2MTl9fQ==--69be15a90578f16a3688cd7410190497780880b2.gif — Reply to this email directly or view it on GitHub.

kez1710 commented 10 years ago

The wiring is all tight

Sent from my iPad

On 25 Aug 2014, at 11:57, Fred notifications@github.com wrote:

According to the log it just cut-off, no red LED. I wonder if it's something as simple as the wires in the screw terminals have come loose?

— Reply to this email directly or view it on GitHub.

LuboBonchev commented 10 years ago

Good! If the batteries are NOT charged after the previous run (assume it finished with MoPi flashing the red LED, or I am wrong?), would you do one more run and record the voltages again? Thank you!

kez1710 commented 10 years ago

Hi Guys, here is the link to the second log file http://pastebin.com/RHRrem0f.

Thanks Kerry

On 25 August 2014 12:43, Lubo Bonchev notifications@github.com wrote:

Good! If the batteries are NOT charged after the previous run (assume it finished with MoPi flashing the red LED, or I am wrong?), would you do one more run and record the voltages again? Thank you!

— Reply to this email directly or view it on GitHub https://github.com/hamishcunningham/pi-tronics/issues/12#issuecomment-53258909 .

guruthree commented 10 years ago

graph2 A much shorter run. I'm guessing this is more characteristic of the problem. Status 17 the entire time, Source 1 and Red LED. The short run would match discharged batteries, but the shape of the curve and the voltage levels are still sort of wrong. Have you been able to test the batteries in a flashlight (torch) yet?

kez1710 commented 10 years ago

I haven't tried them in a touch. But I have tried them in a Bluetooth speaker and they are powering that with no distortion of sound. That's with the batteries still on he same charge as first test on the mopi.

Thanks Kerry

Sent from my iPad

On 27 Aug 2014, at 08:17, Fred notifications@github.com wrote:

A much shorter run. I'm guessing this is more characteristic of the problem. Status 17 the entire time, Source 1 and Red LED. The short run would match discharged batteries, but the shape of the curve and the voltage levels are still sort of wrong. Have you been able to test the batteries in a flashlight (torch) yet?

— Reply to this email directly or view it on GitHub.

LuboBonchev commented 10 years ago

The time lenght is close to that I have expected. Discharging curve is still above the knee, which theoretically was our target. Strange for me is that the forst run ended at 9.0V and the second begins at 8.7V. Usually batteries recover small part of their voltage when are off for few hours. In this case is different. Strange is also the unexpected cut, without a signal for critical low voltage level ... Kerry, can you charge the batteries and run another test using THE SECOND delivered PP3 connector. Screwing it in the terminal please make sure that the screws are well tightened. Thanks.

kez1710 commented 10 years ago

Ok no problem. I shall charge the batteries up today and get the test done as soon as they are done On 27 Aug 2014 11:16, "Lubo Bonchev" notifications@github.com wrote:

The time lenght is close to that I have expected. Discharging curve is still above the knee, which theoretically was our target. Strange for me is that the forst run ended at 9.0V and the second begins at 8.7V. Usually batteries recover small part of their voltage when are off for few hours. In this case is different. Strange is also the unexpected cut, without a signal for critical low voltage level ... Kerry, can you charge the batteries and run another test using THE SECOND delivered PP3 connector. Screwing it in the terminal please make sure that the screws are well tightened. Thanks.

— Reply to this email directly or view it on GitHub https://github.com/hamishcunningham/pi-tronics/issues/12#issuecomment-53550827 .

LuboBonchev commented 10 years ago

Thanks! One question: What is included in Pi configuration? Keyboard, mouse, WiFi dongle, .... ? I am trying to figure out how much the power consumption from the batteries can be and is any dynamic load that can cause the spikes on the first curve. Are the batteries good fasten in the holder? Any lack of the contact time to time?

kez1710 commented 10 years ago

A keyboard and mouse in one and a WiFi dongle On 27 Aug 2014 12:08, "Lubo Bonchev" notifications@github.com wrote:

Thanks! One question: What is included in Pi configuration? Keyboard, mouse, WiFi dongle, .... ? I am trying to figure out how much the power consumption from the batteries can be and is any dynamic load that can cause the spikes on the first curve.

— Reply to this email directly or view it on GitHub https://github.com/hamishcunningham/pi-tronics/issues/12#issuecomment-53555030 .

LuboBonchev commented 10 years ago

Thank you for prompt replay :-) Which type is that WiFi dongle? WiPi or another one? The operating system is Raspbian, is not it? Is any application running in parallel with MoPi tests? Something that periodically use e.g. Internet over WiFi? Sorry that bottering you with so many questions, but I am trying to figur out what is going on with your MoPi. There are not so many from 600 units on the filed so far having issues on the start.

kez1710 commented 10 years ago

The wifi dongle is from the pi hut. Yes the OS is raspbian and there should be nothing running bar the mopi tests.

This is the link to the mopi tests with the second battery connector connected to the mopi http://pastebin.com/TZ60tpYH. This time there is only a mouse and keyboard connected.

Thanks Kerry

On 27 August 2014 13:05, Lubo Bonchev notifications@github.com wrote:

Thank you for prompt replay :-) Which type is that WiFi dongle? WiPi or another one? The operating system is Raspbian, is not it? Is any application running in parallel with MoPi tests? Something that periodically use e.g. Internet over WiFi? Sorry that bottering you with so many questions, but I am trying to figur out what is going on with your MoPi. There are not so many from 600 units on the filed so far having issues on the start.

— Reply to this email directly or view it on GitHub https://github.com/hamishcunningham/pi-tronics/issues/12#issuecomment-53568987 .

LuboBonchev commented 10 years ago

Thanks Kerry! Unfortunately can't reach the log file this time :-( Browser says "This paste has been removed!". Would you check it please?

kez1710 commented 10 years ago

Hi, sorry about that I don't know what happened but I have uploaded it again so here is the link http://pastebin.com/6gWFf57E.

On 28 August 2014 12:02, Lubo Bonchev notifications@github.com wrote:

Thanks Kerry! Unfortunately can't reach the log file this time :-( Browser says "This paste has been removed!". Would you check it please?

— Reply to this email directly or view it on GitHub https://github.com/hamishcunningham/pi-tronics/issues/12#issuecomment-53705412 .

LuboBonchev commented 10 years ago

Thanks Kerry! This time you have full run almost 10 hours long. We have to note that. Another fact is that the charger is not charging batteries fully. If they are, the first samples are above 10.0V and take at least one hour on blue LED; the test starts at 9.9V and runs on blue LED only a half minute. Nevertheless the total time is 10 hours and finished, I guess, flashing the red LED. In the beginning there are spikes again, which source is not clear for me. Looks like the RasPi goes in sleep mode and is not taking current from the MoPi. Can be a change in the OS ... Later on, during the test, time to time there are similar spikes again, which favors the possible OS change. As summary: The MoPi now looks fully usable for me and I am encouraging you to start using it. We will stay in touch to back you up if something happens again. I will also work further on your case trying to fully duplicated here, which was impossible so far ... Will ask Fred to help me converting the last log file to curve. It is too big and OpenOffice is not able to do it at once. I am cutting it in pieces but it is not the true picture. Kerry, if you have any questions, please do not hesitate to ask me.

kez1710 commented 10 years ago

Thanks for the help. I will continue to use the mopi and if experience anymore problems I will let you know On 28 Aug 2014 14:19, "Lubo Bonchev" notifications@github.com wrote:

Thanks Kerry! This time you have full run almost 10 hours long. We have to note that. Another fact is that the charger is not charging batteries fully. If they are, the first samples are above 10.0V and take at least one hour on blue LED; the test starts at 9.9V and runs on blue LED only a half minute. Nevertheless the total time is 10 hours and finished, I guess, flashing the red LED. In the beginning there are spikes again, which source is not clear for me. Looks like the RasPi goes in sleep mode and is not taking current from the MoPi. Can be a change in the OS ... Later on, during the test, time to time there are similar spikes again, which favors the possible OS change. As summary: The MoPi now looks fully usable for me and I am encouraging you to start using it. We will stay in touch to back you up if something happens again. I will also work further on your case trying to fully duplicated here, which was impossible so far ... Will ask Fred to help me converting the last log file to curve. It is too big and OpenOffice is not able to do it at once. I am cutting it in pieces but it is not the true picture. Kerry, if you have any questions, please do not hesitate to ask me.

— Reply to this email directly or view it on GitHub https://github.com/hamishcunningham/pi-tronics/issues/12#issuecomment-53717882 .

guruthree commented 10 years ago

Thanks for bearing with us Kerry. Here's a graph of your last run: graph3

hamishcunningham commented 10 years ago

hi Kerry,

I'm glad your rig is working now -- and thanks a million for helping us with the diagnostic data, it's a real help!

Best

Hamish

kez1710 commented 10 years ago

Thanks for all your help too. Be glad to use if properly again On 29 Aug 2014 18:32, "Hamish Cunningham" notifications@github.com wrote:

hi Kerry,

I'm glad your rig is working now -- and thanks a million for helping us with the diagnostic data, it's a real help!

Best

Hamish

— Reply to this email directly or view it on GitHub https://github.com/hamishcunningham/pi-tronics/issues/12#issuecomment-53906533 .

kez1710 commented 10 years ago

Hi, sorry to bother you again, but the mopi has started to do the same as before. it has just shut its self down but I have been able to power it back up off the same battery charge just like last time.

Thanks

Kerry

On 29 August 2014 22:23, Kerry kidd kkidd1710@gmail.com wrote:

Thanks for all your help too. Be glad to use if properly again On 29 Aug 2014 18:32, "Hamish Cunningham" notifications@github.com wrote:

hi Kerry,

I'm glad your rig is working now -- and thanks a million for helping us with the diagnostic data, it's a real help!

Best

Hamish

— Reply to this email directly or view it on GitHub https://github.com/hamishcunningham/pi-tronics/issues/12#issuecomment-53906533 .

LuboBonchev commented 10 years ago

Hi Kerry, No problem to bother me if something went wrong. Please tell me what you did after the last test, which was successful. As the batteries were discharged, I assume that the first was charging, right? Then did you change the PP3 connector or use the same as the last test? Did you change the MoPi input (position of the connector/wires on the MoPi screw terminal)? Etc. Sorry that you have to write so much, but something may malfunctioning and we have to fix what. Thanks!

kez1710 commented 10 years ago

yes I recharged the batteries, changed the PP3 connector, but it was connected into the same screw terminals as the original connector.

On 2 September 2014 10:48, Lubo Bonchev notifications@github.com wrote:

Hi Kerry, No problem to bother me if something went wrong. Please tell me what you did after the last test, which was successful. As the batteries were discharged, I assume that the first was charging, right? Then did you change the PP3 connector or use the same as the last test? Did you change the MoPi input (position of the connector/wires on the MoPi screw terminal)? Etc. Sorry that you have to write so much, but something may malfunctioning and we have to fix what. Thanks!

— Reply to this email directly or view it on GitHub https://github.com/hamishcunningham/pi-tronics/issues/12#issuecomment-54129840 .

LuboBonchev commented 10 years ago

Thanks Kerry! May we assume then that the PP3 connector is the one that is bringing troubles? This is the only change you did. Please make sure only that the batteries are well fitted into the holder, no any miscontacts.

kez1710 commented 10 years ago

No problem. I have checked all connections are wired tightly and batteries are all in. This is really confusing me because this time the mopi powered back up with green light on rather than red like the last time. when it powered its self off.

On 2 September 2014 11:07, Lubo Bonchev notifications@github.com wrote:

Thanks Kerry! May we assume then that the PP3 connector is the one that is bringing troubles? This is the only change you did. Please make sure only that the batteries are well fitted into the holder, no any miscontacts.

— Reply to this email directly or view it on GitHub https://github.com/hamishcunningham/pi-tronics/issues/12#issuecomment-54132024 .

LuboBonchev commented 10 years ago

MoPi switched itself off due to a misscontact, not because batteries are discharged. That's why on the next run it starts at green light. You still have energy in the batteries. Can you use the good working PP3 connector for a while? Then MoPi should work properly, without any hassels.

kez1710 commented 10 years ago

Ok thanks On 2 Sep 2014 12:53, "Lubo Bonchev" notifications@github.com wrote:

MoPi switched itself off due to a misscontact, not because batteries are discharged. That's why on the next run it starts at green light. You still have energy in the batteries. Can you use the good working PP3 connector for a while? Then MoPi should work properly, without any hassels.

— Reply to this email directly or view it on GitHub https://github.com/hamishcunningham/pi-tronics/issues/12#issuecomment-54140811 .