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AC/DC adapter 230AC 12VDC/1A
Hi !    i'm looking for AC/DC adapter, something like this (EU plug)   https://www.tme.eu/gb/details/ac_dc-cl12_1/plug-in-power-supplies/cellevia-power/   but...
Thu. Mar 1, 2018 - 11:26 AM
PUMH13 - NPN-NPN
Hi !   I'm using PUMH13 to drive LEDs.       My question is, is there similar chip with but with extra resistor in collector pin (form pin 3 and 6 to...
Tue. Nov 14, 2017 - 07:55 AM
ADC problem spike
Hi,   I have a problem using AD7888 with ATmega324PA.   I am measuring sine voltages f=50Hz, so T= 20ms on 6 channels, 7 and 8 AIN are connected to GND SPI frequency is...
Sat. Oct 21, 2017 - 06:56 AM
ATmega324pa and USART_0 and USART_1
Hi !   I'm using USART_0 as a regular communication port.   USART_1 is used as a service port.   What I have noticed is that I have random interrupts on USART_1...
Wed. Sep 13, 2017 - 11:47 AM
How to get -5V for operational amplifier
Hi !   I need -5V for 6 OPA to measure 6 analog channels.   Till now I was getting -5V form DC/DC converter ISA0505. It's space consuming and expensive solution.  ...
Wed. Sep 6, 2017 - 07:31 AM
ATmega324PA and AD7888 adc
Hi !   I'm measuring constant voltages(voltage divider) by AD7888 8 channel adc.   ATmega324PA 8MHz     First of all I'm not sure what is SPI mode of this adc...
Fri. Aug 25, 2017 - 01:21 PM
micro SD card connector problem
Hi ! I'm using micorSD card push-push connector:   http://www.molex.com/molex/products/datasheet.jsp?part=active/5033981892_MEMORY_CARD_SOCKET.xml   and 8GB micro SD...
Sun. Jul 9, 2017 - 10:15 AM
CS_FFD_SLEEP_PERIOD
Hi ! I see few new CS parameters in BitCloud v.12 like CS_FFD_SLEEP_PERIOD. That's new, so now even Routers and Coordinator can go to sleep. In documentation it is not mentioned...
Wed. Aug 10, 2011 - 08:25 AM
ATZB-A24-ULF hardware issue
Hi ! I have one/or more hardware issues. I'm using ATZB-A24-ULF modules. I've done my own PCB design similar to Meshnetics MeshBean AMP board (TPS63001DRC DC-DC). In past few...
Fri. May 27, 2011 - 06:52 AM
[BitCloud] IRQ
Hi ! I have few questions about IRQ in BitCloud. According to ATmega1281 datasheet p. 86 port pins PE 7,6,5 and 4 can be used as External Interrupt Input. Are those only pins that...
Thu. May 5, 2011 - 01:10 PM
[BitCloud] SPI question
Hi all! I have few questions about SPI on BitCloud. I'm using ATZB-A24-ULF module. On this module standard SPI is used for communication between ATmega1281 and RF230, so I have to...
Tue. Apr 5, 2011 - 08:16 AM
Reset suggestions
Hi, guys! I would like to bind interrupt from RTC (active LOW, open drain) to RESET pin of uC(ATmega1281). When interrupt is issued on RTC it stays LOW, so I can't directly bind...
Sun. Apr 3, 2011 - 03:54 PM

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