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by Mortimer
Tue Aug 08, 2017 9:20 am
Forum: General discussion
Topic: Account deletion?
Replies: 89
Views: 11647

Re: Account deletion?

It would only need to be 'honoured' if the requested is for removal data that comes into the legal definition of "personal data". Even then I would have thought that obfuscation of the account identity to become some sort of inactive, generic account, whilst retaining the posts would be sufficient i...
by Mortimer
Mon Aug 07, 2017 1:28 pm
Forum: General discussion
Topic: Account deletion?
Replies: 89
Views: 11647

Re: Account deletion?

I don't think the DPA applies in this case. There is no personal information displayed. DPA applies to any personal data held whether it is displayed or not. Agreed, but in the context of the OPs request, there is no information associated with theiraccount visible to other forum users that could b...
by Mortimer
Mon Aug 07, 2017 12:54 pm
Forum: General discussion
Topic: Account deletion?
Replies: 89
Views: 11647

Re: Account deletion?

It might be someone testing the forum against the upcoming "right to be forgotten" laws. I am not a legal expert but I think the request made by ninninon to have his/her account deleted would be difficult to justify under those proposed law changes, as there is nothing about the account that can be ...
by Mortimer
Wed Jul 26, 2017 11:14 am
Forum: Off topic discussion
Topic: Logic Coverter 5V to 3.3V in RPi - MQx
Replies: 10
Views: 2305

Re: Logic Coverter 5V to 3.3V in RPi - MQx

If I am understanding Yahya05IE correctly: He has an MCP3008 ADC connected to the RPi via a bi-directional level shifter 3V <-> 5V. He wants to know if he needs to account for the level shifter in the code he is writing to use the values coming out of the MCP3008 into the RPi. The simple answer if m...
by Mortimer
Fri Jul 21, 2017 7:09 pm
Forum: Automation, sensing and robotics
Topic: Can't Recharge While RPi Is On
Replies: 8
Views: 1458

Re: Can't Recharge While RPi Is On

I would imagine that a battery charger design to charge battery packs alone, i.e. not powering other things at the same time, is going to get confused by the changing voltage it sees as the load the Pi puts onto the battery and charger changes. Remember the charger is looking for a specific pattern ...
by Mortimer
Thu Jul 20, 2017 10:58 am
Forum: General discussion
Topic: Bricked my Pi. don't know why
Replies: 121
Views: 12423

Re: Bricked my Pi. don't know why

We have a saying "Assumption is the mother of all mistakes". The language is usually a bit stronger, bit it is a good expression to keep in mind.

I suppose to be completely PC : "Assumption is the parent of all mistakes." :D
by Mortimer
Thu Jul 20, 2017 10:56 am
Forum: General discussion
Topic: Bricked my Pi. don't know why
Replies: 121
Views: 12423

Re: Bricked my Pi. don't know why

After watching quite a few BigClive videos on YouTube it is apparent that many USB leads coming from China cannot be trusted to have the correct colours on the power lines. He frequently finds +5V is white and ground is red. Always continuity check such connections and make sure connections are goi...
by Mortimer
Thu Jul 20, 2017 10:21 am
Forum: General discussion
Topic: Bricked my Pi. don't know why
Replies: 121
Views: 12423

Re: Bricked my Pi. don't know why

After watching quite a few BigClive videos on YouTube it is apparent that many USB leads coming from China cannot be trusted to have the correct colours on the power lines. He frequently finds +5V is white and ground is red. Always continuity check such connections and make sure connections are goin...
by Mortimer
Tue Jul 18, 2017 8:20 am
Forum: Windows 10 for IoT
Topic: Odd Happenings
Replies: 2
Views: 839

Re: Odd Happenings

Not falling for the UK/US keyboard trap are you?
Swapped " and @?
# or \ in the wrong place?
by Mortimer
Fri Jul 07, 2017 12:13 pm
Forum: Other projects
Topic: Raising bed to ceiling. need motor advice..
Replies: 22
Views: 3989

Re: Raising bed to ceiling. need motor advice..

Yep, I agree, the hand controller is going to be simple switching, up-centre(off)-down. So to wire in a relay board to operate it should be fairly simple. You might want to leave the original manual switching circuit in place anyway, for when the computer control doesn't work and during testing. Lo...
by Mortimer
Fri Jul 07, 2017 9:05 am
Forum: Advanced users
Topic: raspberry pi ECM for cars?
Replies: 14
Views: 12071

Re: raspberry pi ECM for cars?

In fact, check out this link. http://hackaday.com/2015/01/28/raspberry-pi-learns-how-to-control-a-combustion-engine/ Interesting, but not quite what is being talked about here. In Adam's PhD project, the Pi is not directly controlling the engine, there isan ECU there. This topic seems to be about w...
by Mortimer
Fri Jul 07, 2017 8:52 am
Forum: Other projects
Topic: Raising bed to ceiling. need motor advice..
Replies: 22
Views: 3989

Re: Raising bed to ceiling. need motor advice..

Yep, I agree, the hand controller is going to be simple switching, up-centre(off)-down. So to wire in a relay board to operate it should be fairly simple. You might want to leave the original manual switching circuit in place anyway, for when the computer control doesn't work and during testing. Loo...
by Mortimer
Thu Jul 06, 2017 5:29 am
Forum: HATs and other add-ons
Topic: USB Displaylink Adapter Dual Screen Setup
Replies: 4
Views: 5115

Re: USB Displaylink Adapter Dual Screen Setup

Afraid not. I'd come to conclusion that it is unlikely to work very well.
by Mortimer
Mon Jul 03, 2017 12:45 pm
Forum: General discussion
Topic: Duration Test of the Pi's SD
Replies: 1
Views: 433

Re: Duration Test of the Pi's SD

mosespi has been running a series of tests much like this for a while now...
Raspberry Pi power cut torture test using a MoPower UPS
by Mortimer
Mon Jul 03, 2017 9:03 am
Forum: Other projects
Topic: Raising bed to ceiling. need motor advice..
Replies: 22
Views: 3989

Re: Raising bed to ceiling. need motor advice..

How about incorporating something like this...
http://www.safetyliftingear.com/product ... gLz5vD_BwE
by Mortimer
Sat Jun 24, 2017 10:45 am
Forum: General discussion
Topic: 'Antique' Televisions with a Pi.
Replies: 16
Views: 3347

Re: 'Antique' Televisions with a Pi.

Sometimes an old VHS recorder can be used to convert composite video to UHF PAL. I used to have one that could do that many moons ago.
by Mortimer
Mon Jun 19, 2017 9:59 am
Forum: Troubleshooting
Topic: IPTables
Replies: 2
Views: 777

Re: IPTables

If port forwarding on your router is configured to forward to a closed/unavailable port, will the port appear closed on the external interface? I suspect not.
by Mortimer
Fri Jun 16, 2017 8:37 am
Forum: General discussion
Topic: Finding the right transistor
Replies: 23
Views: 4406

Re: Finding the right transistor

It supports I2C and SPI so in theory it could fan out to many thermocouples. And yes the thermocouple or other temperature sensor type attached to the heat sinks to monitor their temperature, on the basis that the heat sink temperature will be proportional to the temperature of the chip underneath. ...
by Mortimer
Thu Jun 15, 2017 4:22 pm
Forum: General discussion
Topic: Finding the right transistor
Replies: 23
Views: 4406

Re: Finding the right transistor

I was thinking more along the lines of thermocouples on the heatsinks. All being good your solution would work, I think I would only be nervous about ensuring the system fails safe. I.e. If the RPi lost contact with the SNMP service, the network or was otherwise incapacitated, the fan defaults to fu...
by Mortimer
Thu Jun 15, 2017 2:23 pm
Forum: General discussion
Topic: Finding the right transistor
Replies: 23
Views: 4406

Re: Finding the right transistor

The Trinket is a small circuit board with an Atmel microcontroller chip on it. https://cdn-shop.adafruit.com/970x728/1501-12.jpg It has a few GPIO pins, so could be programmed to monitor a temperature sensor, and PWM control the fan. It is so small it plus its sensor could be placed inside the switc...
by Mortimer
Thu Jun 15, 2017 11:43 am
Forum: General discussion
Topic: Finding the right transistor
Replies: 23
Views: 4406

Re: Finding the right transistor

Which Cisco switch is it? If you don't mind me asking. If the fan is 4-wire and has the requisite built in controller, I see no reason why it wouldn't be the easiest way to control it. It would be an interesting project on a RPi. Turning the fan on and off a fairly trivial thing. PWM control is doab...
by Mortimer
Thu Jun 15, 2017 9:12 am
Forum: General discussion
Topic: Yellow lightning icon
Replies: 32
Views: 4078

Re: Yellow lightning icon

Maybe, but the supply is not direct. It is Motorola Lapdock, with associated PSU, so in effect a battery supported supply, which has worked flawlessly for over 3 years.

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