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Programming Hardware
Hi, I done a bit of programming on Atmel ATMega chips over 10 years ago and now have an application where I would like to try and use them again. Can I ask has much changed? From...
Sunday, 14 March 2021 - 21:55
Check Sum issue
After programming a Mega162 in assembly via Studio 4 and STK500 I sent the Hex file to a production programmer along with a programmed chip to compare the 2 check sums. He is...
Wednesday, 13 April 2011 - 14:32
Watchdog timer question
I have a program in an Atmega 162. It takes the time from an RTC chip (DS1337) and displays it on 4 x 7 segment displays. The display refresh subroutine is accessed via a pin...
Monday, 17 January 2011 - 12:07
Battery backup not holding time in RTC chip
Hi I have installed a number of PCBs (approx 50) with an Atmega162 taking time of day from a DS1337 and displaying this on 7 segment displays. The RTC is backed up by a lithium...
Tuesday, 11 January 2011 - 12:55
New mobile phone adapters
Hi I am designing a circuit that will be potentially used over europe. To ensure that a compatible power supply will be available in each country I was planning to use the new...
Friday, 23 April 2010 - 09:34
Soldering Iron
Hi Having gone through a few cheep soldering irons over the past few years (under £30, up to 20 W output) I am now looking into purchasing something a little more robust and...
Monday, 11 January 2010 - 09:43
Prescaller for 128K internal on Tiny24
Hi Im using a tiny24 and trying to produce a steady time base (ideally seconds) Im using the 127Khz internal oscillator to drive an LED via a register counting and comparing how...
Tuesday, 10 November 2009 - 10:37
PCB enclosures
Hi Im looking for an enclosure for a circuit that Im building. It needs to be of the type that plugs straight into the mains in 1 unit. Much like alot of power adapters. Ive...
Monday, 26 October 2009 - 15:02
Using input to drive LED
Hi Im making a circuit with volt free contacts into a Tiny24. Im switching the gnd to my input via contact between the 2 terminal. I have attached a wiring diagram. Im would also...
Tuesday, 29 September 2009 - 12:15
STK500
Hi I carry out all my programming using an STK-500 that i bought as a starter pack from farnell (4402066). This was about £200. Im now looking to buy another for a collegue to...
Friday, 21 August 2009 - 08:14
noisy component on board...
Hi Im working on a new version of a PCB to control the operation of a 25 Watt motor via a triac and a 1kW heater via a relay. Im using a Mega162. The board also has wireless...
Monday, 6 April 2009 - 07:18
storing registers during unit turn off
hi Ive previously stored some configuration settings in R8 of a Mega162 (latch bits etc) and they have remained the same after turning the unit off and on again. Ive returned to...
Tuesday, 31 March 2009 - 13:44

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