Search found 144 matches
- Wed Jun 15, 2016 3:30 am
- Forum: Advanced users
- Topic: 2560x1600 resolution
- Replies: 10
- Views: 7917
Re: 2560x1600 resolution
I'll guess that the monitor can't do that resolution with HDMI. Rather than display port,
- Wed Jun 01, 2016 11:37 pm
- Forum: General discussion
- Topic: 2 New Pi Articles in Tech Republic
- Replies: 2
- Views: 991
Re: 2 New Pi Articles in Tech Republic
Author is regurgitating old news, wrong vendor names.
- Wed Jun 01, 2016 7:27 pm
- Forum: Python
- Topic: Using pySerial
- Replies: 3
- Views: 1147
Re: Using pySerial
no such problem here. Be sure to disable hardware flow control. And change the OS config to not have a login terminal on that serial port.
- Wed Jun 01, 2016 4:40 pm
- Forum: General discussion
- Topic: TeamViewer IoT Developer Contest: Win up to EUR 5,000
- Replies: 40
- Views: 30674
Re: TeamViewer IoT Developer Contest: Win up to EUR 5,000
Needs more developer testing / debugging? Including missing installation script (.deb doesn't have dependencies in it).
- Wed Jun 01, 2016 12:37 am
- Forum: General discussion
- Topic: TeamViewer IoT Developer Contest: Win up to EUR 5,000
- Replies: 40
- Views: 30674
Re: TeamViewer IoT Developer Contest: Win up to EUR 5,000
I'm using jessie on RPi2. When I tried to install this preview Teamviewer, there are many dependencies not met. I've not been able to find installation instructions. sudo dpkg -i RPi\ teamviewer-host_11.0.58397_armhf.deb Selecting previously unselected package teamviewer-host. (Reading database ... ...
- Fri May 06, 2016 3:40 am
- Forum: General discussion
- Topic: VNC Server on RPi 2 B+
- Replies: 7
- Views: 1864
Re: VNC Server on RPi 2 B+
I use VNC client on windows 7 and VNC server on RPI2s and RPi zeros.
I just searched out and followed instructions for setting this up, with a keyboard/mouse and monitor connected to the RPi. Once VNC works, I use them headless on the LAN, and the Zero, on WiFi, with VNC.
I just searched out and followed instructions for setting this up, with a keyboard/mouse and monitor connected to the RPi. Once VNC works, I use them headless on the LAN, and the Zero, on WiFi, with VNC.
- Sat Apr 30, 2016 12:28 am
- Forum: General discussion
- Topic: Best place to buy Pi & parts in US
- Replies: 15
- Views: 6663
Re: Best place to buy Pi & parts in US
Adafruit is a good outfit.
And they have that New York attitude
And they have that New York attitude

- Sun Apr 10, 2016 8:23 pm
- Forum: Advanced users
- Topic: PI3 microSD and wear leveling
- Replies: 33
- Views: 37017
Re: PI3 microSD and wear leveling
Today's high capacity MLC NAND flash, with 4 level sensing, has a very high bit error rate. Not just from writing, but from 'read disturbances" where the stored charge is degraded from reading or writing a physically nearby cell. So these multi-level high capacity devices (say, more than 4GB pe...
- Thu Apr 07, 2016 6:08 am
- Forum: Advanced users
- Topic: 802.15.4 radio for Raspberry Pi2
- Replies: 2
- Views: 1081
Re: 802.15.4 radio for Raspberry Pi2
Use an XBee Series 1. Series 2 is Zigbee only and unless your nodes move and NEED mesh networking, or nodes NEED to interoperate with home automation ZIgbee things (assuming the things don't hold this proprietary), use Series 1.
Nice Python library for it.
Nice Python library for it.
- Thu Apr 07, 2016 6:05 am
- Forum: Advanced users
- Topic: PI3 microSD and wear leveling
- Replies: 33
- Views: 37017
Re: PI3 microSD and wear leveling
SD cards (and other MLC NAND flash things like cameras, TVs) have a flash controller chip in addition to the NAND array. The controller is very clever about wear leveling, bad-block remapping, and so on. Here's one popular vendor of controller chips sold (only) to OEMs of flash devices. http://www.p...
- Thu Apr 07, 2016 6:00 am
- Forum: General discussion
- Topic: How to create 3G->WiFi router?
- Replies: 3
- Views: 1276
Re: How to create 3G->WiFi router?
3G cellular to WiFi router?
Cradlepoint has some older models (and see eBay) that support USB cellular modems. CBR900.
They also have some with the cellular modem within the box.
Cradlepoint has "WiFi as WAN" - well done.
Many wifi routers have support for USB cellular modems.
Cradlepoint has some older models (and see eBay) that support USB cellular modems. CBR900.
They also have some with the cellular modem within the box.
Cradlepoint has "WiFi as WAN" - well done.
Many wifi routers have support for USB cellular modems.
- Wed Mar 30, 2016 6:37 am
- Forum: General discussion
- Topic: Pi Zero
- Replies: 17
- Views: 3282
Re: Pi Zero
A few thousand went out in March. I received one from Adafruit in the US. So I have 2 now.
Hen's teeth!
Hen's teeth!
- Wed Mar 09, 2016 6:10 am
- Forum: Python
- Topic: File saved in Python 3, it opens in Python 2
- Replies: 9
- Views: 2651
Re: File saved in Python 3, it opens in Python 2
Or, as I do, avoid python 3. Keep it simple.
- Tue Feb 23, 2016 4:51 am
- Forum: General discussion
- Topic: Dog Intercom
- Replies: 7
- Views: 2134
Re: Dog Intercom
Many webcams have two-way audio as an option. Often used for gate entry cam
- Fri Feb 19, 2016 9:51 pm
- Forum: Python
- Topic: Dictionary for C struct?
- Replies: 6
- Views: 1831
Re: Dictionary for C struct?
Different approach
Using an unsigned long that contains the date and time, in standard form (epoch time, seconds since 1/1/1970). Then comparing with < == > is trivial.
There are library routines to convert from Gregorian time to epoch time and vice-versa.
In C and also Python.
Using an unsigned long that contains the date and time, in standard form (epoch time, seconds since 1/1/1970). Then comparing with < == > is trivial.
There are library routines to convert from Gregorian time to epoch time and vice-versa.
In C and also Python.
- Sun Feb 14, 2016 7:34 am
- Forum: Python
- Topic: Learning Python
- Replies: 16
- Views: 3025
Re: Learning Python
Douglas6 wrote:Wrong.stevech wrote:Beginner should learn Python 2.7 on a PC well before doing so on an RPi.Right.kusti8 wrote:The Pi was made for learning to program
"wrong"... per you. My recommendation is mine. You have your own opinion.
- Sun Feb 14, 2016 12:33 am
- Forum: Advanced users
- Topic: RPI 2B can't load sketch to Arduino Pro Mini
- Replies: 20
- Views: 6536
Re: RPI 2B can't load sketch to Arduino Pro Mini
User a serial or USB/serial bootloader, not this SPI programmer method.
Get an Arduino with the bootloader for serial pre-installed.
Get an Arduino with the bootloader for serial pre-installed.
- Sun Feb 14, 2016 12:32 am
- Forum: Advanced users
- Topic: Sharing images over wifi from laptop/phone to raspberry pi
- Replies: 1
- Views: 592
Re: Sharing images over wifi from laptop/phone to raspberry
By far, easiest is to transfer using thumb drive.
Else search and read about samba (SMB) setup on RPi, so you can mount a share created by the Laptop. But if you don't know the jargon and haven't do this, stick to the thumb drive.
Else search and read about samba (SMB) setup on RPi, so you can mount a share created by the Laptop. But if you don't know the jargon and haven't do this, stick to the thumb drive.
- Sun Feb 14, 2016 12:29 am
- Forum: Python
- Topic: Learning Python
- Replies: 16
- Views: 3025
Re: Learning Python
Beginner should learn Python 2.7 on a PC well before doing so on an RPi. Learn by example - good code from others. Lots of online tutorials. Books: Beginning Python, from novice to professional. 2nd edition. Magnus Lie Hetland. Apress. Python Phrasebook (a reference manual). Brad Dayley. Sams Publis...
- Fri Feb 12, 2016 5:41 am
- Forum: Advanced users
- Topic: telemetry application
- Replies: 1
- Views: 547
Re: telemetry application
how is the serial (?) data framed? A standard like x.25?
LAN? WiFi>
12mbps constant.. quite difficult.
more specifics please
LAN? WiFi>
12mbps constant.. quite difficult.
more specifics please
- Wed Feb 10, 2016 8:00 am
- Forum: Advanced users
- Topic: 4TB new external on PI2
- Replies: 8
- Views: 1644
Re: 4TB new external on PI2
I use the LAN/WiFi and SMB for RPi to access a share on my 2 x 3TB drive Synology NAS.
- Sun Feb 07, 2016 6:27 am
- Forum: Advanced users
- Topic: What's tools and process to port Pi to FreeRTOS
- Replies: 2
- Views: 824
Re: What's tools and process to port Pi to FreeRTOS
Makes no sense because RPi is intrinsically Linux based and the I/O drivers are for Linux.
- Tue Jan 26, 2016 6:47 am
- Forum: Python
- Topic: Receiving emails on Pi
- Replies: 26
- Views: 7978
Re: Receiving emails on Pi
Excessive PITA on small comptuers. I avoid python 3 and its pythonic excesses.
- Sun Jan 24, 2016 7:51 pm
- Forum: Advanced users
- Topic: Characterizing GPIO input pins
- Replies: 44
- Views: 23433
Re: Characterizing GPIO input pins
Logic levels for input... just follow the specifications for the chip from the manufacturer. Use their spec sheet test config. since the levels vary a bit with what external impedance exists.
- Mon Jan 18, 2016 5:41 am
- Forum: Python
- Topic: Piezo buzzer barely audible with MCP23017
- Replies: 5
- Views: 1674
Re: Piezo buzzer barely audible with MCP23017
a PWM signal at the resonant frequency of the piezo (see spec sheet) is needed. Also probably need a transistor on the GPIO output so the drive to the Piezo is more current. Mainly, it's getting the frequency correct. At best, Piezo is feeble as a buzzer.