Hi,
Please could somebody tell me the size of the mounting holes on the VK162 for both PCBs - for the PK162-12 they were different on each
Can't find this information in the user manual, nor in the Autocad drawing.
Thanks
Search found 14 matches
- Thu Jan 25, 2007 8:43 am
- Forum: LK/ELK/VK/PK/OK/MX/GLK/EGLK/GVK/GLT
- Topic: VK162-12 rev 3.0 mounting holes
- Replies: 1
- Views: 2938
- Tue Apr 04, 2006 12:10 am
- Forum: LK/ELK/VK/PK/OK/MX/GLK/EGLK/GVK/GLT
- Topic: Display lifespan
- Replies: 6
- Views: 7393
Hi, is there any advantage in running the display at a lower brightness setting regards the brightness level - i.e is the 10000 hours applicable to normal default brightness or across the entire range of brightness levels? Also, I'd assume that having periods where nothing is displayed on the displa...
- Thu Mar 16, 2006 10:55 am
- Forum: LK/ELK/VK/PK/OK/MX/GLK/EGLK/GVK/GLT
- Topic: PK162-12 i2c linux odd values causing strange behaviour
- Replies: 20
- Views: 17857
Hello, I have ended up using a TI PCA9306, a dual bidirectional level translator, which also serves to isolate the capacitance of the 3v3 and 5v sides. That is, it's possible to have another 400pF on the 5v side which can only be a good thing. This successfully translates the ACK pull-down on the 5v...
- Tue Mar 07, 2006 1:44 am
- Forum: LK/ELK/VK/PK/OK/MX/GLK/EGLK/GVK/GLT
- Topic: PK162-12 i2c linux odd values causing strange behaviour
- Replies: 20
- Views: 17857
- Mon Mar 06, 2006 4:18 pm
- Forum: LK/ELK/VK/PK/OK/MX/GLK/EGLK/GVK/GLT
- Topic: PK162-12 i2c linux odd values causing strange behaviour
- Replies: 20
- Views: 17857
- Fri Mar 03, 2006 1:46 pm
- Forum: LK/ELK/VK/PK/OK/MX/GLK/EGLK/GVK/GLT
- Topic: PK162-12 i2c linux odd values causing strange behaviour
- Replies: 20
- Views: 17857
Hi Raquel, sorry, I must have been confused by what you asked. I transmitted an odd byte onto the bus that wasn't acknowledged since it wasn't recognised by any slave. The waveform for that looked ok, so the master isn't sending strange stuff onto the bus. I have got some traces in excel (managed to...
- Thu Mar 02, 2006 5:30 am
- Forum: LK/ELK/VK/PK/OK/MX/GLK/EGLK/GVK/GLT
- Topic: PK162-12 i2c linux odd values causing strange behaviour
- Replies: 20
- Views: 17857
Hi Raquel When transmitting a ODD value onto the bus, the trace looks fine. However, I did find this message when googling: For a 5 volt system, a 1k pullup would be too low. In section 16.1 of the i2c spec (page 39), it says the minimum specified sink current is 3 ma. This gives 5v/3ma = 1.67K as t...
- Wed Mar 01, 2006 11:44 am
- Forum: LK/ELK/VK/PK/OK/MX/GLK/EGLK/GVK/GLT
- Topic: PK162-12 i2c linux odd values causing strange behaviour
- Replies: 20
- Views: 17857
- Wed Mar 01, 2006 11:04 am
- Forum: LK/ELK/VK/PK/OK/MX/GLK/EGLK/GVK/GLT
- Topic: PK162-12 i2c linux odd values causing strange behaviour
- Replies: 20
- Views: 17857
Hi Raquel, the board is a prototype put together by a local electronics company. It uses an ST2378E level translator chip http://www.st.com/stonline/books/pdf/docs/9489.pdf . Yes, the ACK situation is a bit weird. The master should release SDA after it transmits the last bit and the slave is respons...
- Wed Mar 01, 2006 9:00 am
- Forum: LK/ELK/VK/PK/OK/MX/GLK/EGLK/GVK/GLT
- Topic: PK162-12 i2c linux odd values causing strange behaviour
- Replies: 20
- Views: 17857
- Mon Feb 27, 2006 2:35 pm
- Forum: LK/ELK/VK/PK/OK/MX/GLK/EGLK/GVK/GLT
- Topic: PK162-12 i2c linux odd values causing strange behaviour
- Replies: 20
- Views: 17857
- Fri Feb 24, 2006 5:07 am
- Forum: LK/ELK/VK/PK/OK/MX/GLK/EGLK/GVK/GLT
- Topic: PK162-12 i2c linux odd values causing strange behaviour
- Replies: 20
- Views: 17857
Hi Raquel, It's definitely something to do with the level shifter. Operations on the 3v3 side of the i2c work OK, can change the conversion rate on the ADT7461 by writing odd/even values to the register. Operations on the 5v side fail on odd values. Actual failure appears to be no bus acknowledge is...
- Thu Feb 23, 2006 2:20 pm
- Forum: LK/ELK/VK/PK/OK/MX/GLK/EGLK/GVK/GLT
- Topic: PK162-12 i2c linux odd values causing strange behaviour
- Replies: 20
- Views: 17857
Hi Raquel, the problem occurs when I've got the PK162-12 and the ADT7461. I can't remove the ADT7461 as its soldered onto the board. I've not attached the LCD03 and PK162-12 at the same time. I believe I'm addressing the PK162-12 properly since I can see the characters output to the display; but the...
- Thu Feb 23, 2006 9:25 am
- Forum: LK/ELK/VK/PK/OK/MX/GLK/EGLK/GVK/GLT
- Topic: PK162-12 i2c linux odd values causing strange behaviour
- Replies: 20
- Views: 17857
PK162-12 i2c linux odd values causing strange behaviour
Hi, I've got a couple of display modules (a PK162-12 and an LCD03 http://www.robot-electronics.co.uk/htm/Lcd03tech.htm ). In fact I've got another 13 PK162-12s that I haven't tested yet. The boards are attached to the i2c bus of a Arcom VIPER SBC (an ARM PXA255). This board has 1k pull-up resistors ...