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RJ45 magnetics connector 1x port, but unshielded
  Hi guys! I need RJ45 magnetics connector 1x port, but unshielded. My box is made out of aluminium and I don't want box to be attached to GND on PCB through metal chassis...
Monday, 22 February 2016 - 09:43
_delay_ms() problem
  Hi !   I have an issue with _delay_ms().   ATmega324Pa  running on 8MHz  gcc     This code works ok.  I get 5 ms pulses on scope. ...
Friday, 20 November 2015 - 09:01
analog multiplexer
Hi guys !   I'm using serial analog multiplexer 8:1 LTC1391 and adc LTC1285 like in picture.   I've have noticed that if more analog signals are connected to analog...
Wednesday, 1 July 2015 - 09:15
-5 V power supply for OPA
Hi guys !   How to realize -5 V supply for OPA237 or any other ?     I've achieved this with    http://uk.farnell.com/tracopower/tes-1-0521/dc-dc-5v-5v-1w...
Friday, 8 May 2015 - 11:11
ARM board
  Hi !   Can someone suggest me a board similar to :   http://www.acmesystems.it/arietta  or  http://www.acmesystems.it/aria   or clone   http...
Saturday, 25 April 2015 - 16:14
GPRS 4,1V to uC 3,3V serial communication
Hi all !   Picture is taken form datasheet. Lines with X red are not used.     There is NO RESISTOR 5k6 on RXD from uC side (in red), why? I suppose that form GPRS...
Sunday, 19 April 2015 - 15:10
GPRS module
Hi !   I don't have any experience with GSM/GPRS modules so I would like to hear your opinion about this module:   http://www.ebay.com/itm/3-7V-4-2V-SIM800L-GPRS-Module-...
Tuesday, 17 February 2015 - 17:29
Input pin current ATmaga324P
  Hi !   I'm just checking if I got this alright.   Datasheet http://www.atmel.com/Images/Atmel-8011-8-bit-AVR-Microcontroller-ATmega164P-324P-644P_datasheet.pdf...
Sunday, 30 November 2014 - 10:43
TQFP 44-pin PCB layout
Hi !   I need to draw PCB layout for ATmega324 uC and that is TQFP 44-pin.   I'm working with an archaic program PROTEL 99 which doesn't have this layout.  ...
Friday, 14 November 2014 - 18:23
Which uC ?
Hi !   I need to decide which uC to use.   My requirements are:   2 USART channels (TXD0 RXD0, TXD1 RXD1)   >= 16 kB flash     TWI (SCL SDA)...
Thursday, 13 November 2014 - 11:04
Connecting 3,3V uC and sim900 4V
Hi !   I have uC  which runs on 3,3V but could also handle 3,6V.   Sim900 runs from 3,6-4,5V.  When transmitting voltage drops for about 0,4V, so sim900 should...
Wednesday, 1 October 2014 - 09:59
LW_Mesh LQI and RSSI retrieval
Hi ! I would like to achieve something like routing table in BitCloud but on LW_MESH. To be more precise I would like to get LQI and RSSI form every node, I know how to extract...
Monday, 7 July 2014 - 11:08

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