As the OP hasn't been back, we might reasonably assume the second post answered the question.
Different forums use different interfaces - he might be used to a forum that actually has the word "edit" somewhere around the post.
Search found 358 matches
- Tue Jun 12, 2018 7:58 am
- Forum: General discussion
- Topic: How do I edit my post?
- Replies: 13
- Views: 1393
- Tue Jun 12, 2018 7:56 am
- Forum: Interfacing (DSI, CSI, I2C, etc.)
- Topic: Circuit using a MOSFET to control power
- Replies: 7
- Views: 4012
Re: Circuit using a MOSFET to control power
I'm not seeing an image in the first post or any kind of diagram in the link in the second post. I have no direct experience of using MOSFETs (a bit of a hole in my otherwise wide experience with electronics), so I would personally probably steer towards an integrated driver with complete overload p...
- Mon Jun 11, 2018 2:14 pm
- Forum: Graphics, sound and multimedia
- Topic: How do I add a headphone jack?
- Replies: 16
- Views: 2979
Re: How do I add a headphone jack?
I guess that would work... worth a first try anyway (cheap and simple). The risk is that the volume will be too high for the 'phones, and there is nowhere to put attenuation without also creating cross-talk.
- Mon Jun 11, 2018 1:30 pm
- Forum: Beginners
- Topic: Headless sdcard shutdown power off
- Replies: 13
- Views: 1486
Re: Headless sdcard shutdown power off
The risk is that a write operation (rather than a read operation) is not completed if you just unplug it hot without unmounting first. If doing a controlled shut-down, unmounting is not necessary.
- Mon Jun 11, 2018 10:29 am
- Forum: Graphics, sound and multimedia
- Topic: How do I add a headphone jack?
- Replies: 16
- Views: 2979
Re: How do I add a headphone jack?
Maybe, but the problem with that is I know of no headphones where the -ve wires for L and R are not commoned. You could re-wire some headphones so that L and R go to separate mono plugs, with two mono switched sockets, but also note that the volume levels driving speakers will probably not be approp...
- Mon Jun 11, 2018 8:54 am
- Forum: Automation, sensing and robotics
- Topic: Relay Module KY-019 5V
- Replies: 488
- Views: 114761
Re: Relay Module KY-019 5V
One thing I found surprising is that the spec is tighter than I thought. For example, spec says that the minimum release voltage and current is 0.25V/0.5V and 3.5mA/7mA, actually the real values are much higher ( 12mA to release ) Nothing wrong with that. The quoted values are those where the manuf...
- Mon Jun 11, 2018 8:47 am
- Forum: Beginners
- Topic: Headless sdcard shutdown power off
- Replies: 13
- Views: 1486
- Mon Jun 11, 2018 8:38 am
- Forum: Graphics, sound and multimedia
- Topic: How do I add a headphone jack?
- Replies: 16
- Views: 2979
Re: How do I add a headphone jack?
There are two possibilities: the speaker driver is single ended but the -ve wires are provided separately for "convenience", or the driver is double ended. Simple test: measure the resistance between the two -ve wires, if it's zero you can combine them. If it's not zero, the speaker driver...
- Sun Jun 10, 2018 9:29 pm
- Forum: Automation, sensing and robotics
- Topic: TX - RX Switch
- Replies: 2
- Views: 728
Re: TX - RX Switch
You've hit the nail on the head, and that's exactly why I don't like X10 and similar home automation systems: no status return on command sent, you just have to trust that it was actioned. The reason there is no status return is because the transmission is one way - either by radio link or through t...
- Sun Jun 10, 2018 6:30 pm
- Forum: Advanced users
- Topic: Monitor multiple pi's at once
- Replies: 4
- Views: 648
- Sun Jun 10, 2018 6:26 pm
- Forum: Graphics, sound and multimedia
- Topic: How do I add a headphone jack?
- Replies: 16
- Views: 2979
Re: How do I add a headphone jack?
It's a standard part. Put "switched stereo jack socket" in the eBay search box.
- Sat Jun 09, 2018 11:21 pm
- Forum: Troubleshooting
- Topic: Relay Issues
- Replies: 5
- Views: 1394
Re: Relay Issues
That's not what it says on the advertised product details. If you can find me a circuit diagram for the relay board I will be able to comment further.
- Fri Jun 08, 2018 4:28 pm
- Forum: Troubleshooting
- Topic: Encoder random value
- Replies: 5
- Views: 785
Re: Encoder random value
I didn't understand the difference between CHANNEL A and TERMINAL A, I believed it was the same... I think you mean you thought that circuit might be already built into the rotary encoder. No, the rotary encoder stops at the dashed line. The drawing in the data sheet isn't very good, confusing use ...
- Fri Jun 08, 2018 4:24 pm
- Forum: Beginners
- Topic: GPIO 5v outputs 5.5v
- Replies: 7
- Views: 1941
- Fri Jun 08, 2018 10:40 am
- Forum: Beginners
- Topic: GPIO 5v outputs 5.5v
- Replies: 7
- Views: 1941
Re: GPIO 5v outputs 5.5v
You need to understand that the RPi runs from 3.3V, which is regulated on-board from the "5V" input. The 5V pins on the GPIO are connected directly to the power input, so whatever you put in is what you get out. Because of the regulation, it doesn't matter to the RPi that the input voltage...
- Fri Jun 08, 2018 10:26 am
- Forum: Raspberry Pi Desktop for PC and Mac
- Topic: Raspberry Pi Desktop on a 64-bit VirtualBox VM
- Replies: 11
- Views: 17896
Re: Raspberry Pi Desktop on a 64-bit VirtualBox VM
OK, compiled for i86 then. Thanks for info.
- Fri Jun 08, 2018 8:07 am
- Forum: Raspberry Pi Desktop for PC and Mac
- Topic: Raspberry Pi Desktop on a 64-bit VirtualBox VM
- Replies: 11
- Views: 17896
Re: Raspberry Pi Desktop on a 64-bit VirtualBox VM
I don't get what you are doing here. Are you saying you are running the Raspberry Pi binaries (which are compiled for an ARM processor core) in a virtual machine running on i86 hardware??
- Fri Jun 08, 2018 7:36 am
- Forum: Troubleshooting
- Topic: Encoder random value
- Replies: 5
- Views: 785
Re: Encoder random value
The datasheet for that device, as linked in the first post, shows a "suggested filter circuit". Use that, but connect to the 3.3V GPIO pin instead of 5V as shown. "Terminal A" and "Terminal B" are your inputs to the GPIO, "Terminal C" is the 0V connection. The...
- Wed Jun 06, 2018 10:10 pm
- Forum: Beginners
- Topic: What type of STP16CP05 used for 7-segment LEDs
- Replies: 2
- Views: 346
Re: What type of STP16CP05 used for 7-segment LEDs
I wanted to purchase this shift register but there are different ones with similar names. Wanted to get some clarity as which I should get. STP16CP05MTR SO-24 STP16CP05TTR TSSOP24 STP16CP05XTTR TSSOP24 exposed pad STP16CP05PTR QSOP-24 Guess a little info on what I'm planning to do with it would hel...
- Wed Jun 06, 2018 12:24 pm
- Forum: Beginners
- Topic: Command Line Output to Excel Document
- Replies: 12
- Views: 2108
- Wed Jun 06, 2018 9:11 am
- Forum: Beginners
- Topic: Command Line Output to Excel Document
- Replies: 12
- Views: 2108
Re: Command Line Output to Excel Document
If that is too complex for your needs, just do the simple thing and use print statements to create a CSV file and then redirect the output from the script to a file, as suggested in another post here. That's my recommendation. Outputting to as plain a file as possible, and then using the import cap...
- Wed Jun 06, 2018 7:31 am
- Forum: Networking and servers
- Topic: How best to power an offsite backup
- Replies: 1
- Views: 414
Re: How best to power an offsite backup
Your current difficulties with the 2.4A adapter may be simply the length and thin-ness of the connecting wire. It's not just a question of resistance, the longer the wire is the greater its inductance and this reacts against the peaky nature of the RPi's current demand to cause even greater instanta...
- Wed Jun 06, 2018 7:14 am
- Forum: Off topic discussion
- Topic: Choosing a display graphics tablet for photo editing?
- Replies: 4
- Views: 1750
Re: Choosing a display graphics tablet for photo editing?
There's only one choice as far as I am concerned: 12.9" iPad Pro + Apple Pencil (if you have £850 to spare). Add the Apple Smart Keyboard for another £150 and you have a completely portable workstation. Budget a little more for top quality apps (not expensive by comparison). There are cheaper w...
- Wed Jun 06, 2018 7:03 am
- Forum: Beginners
- Topic: Command Line Output to Excel Document
- Replies: 12
- Views: 2108
Re: Command Line Output to Excel Document
Any ideas on how to get this to output to an Excel document (or even just a normal file but preferably straight to Excel) Creating a native Excel file will be a complex process - don't bother banging your head on that one. The good news is that virtually all spreadsheet programs can take a text for...
- Tue Jun 05, 2018 10:51 pm
- Forum: Automation, sensing and robotics
- Topic: Relay Module KY-019 5V
- Replies: 488
- Views: 114761