ESR meter upgrades - Page 57

**stj** · 02-14-2023, 10:42 AM

what cpu is in it?

jellytot · 02-15-2023, 12:18 PM

Atmega 644p

**stj** · 02-15-2023, 02:27 PM

good - because the replacement software wont fit a 324

this is actually built for a 1284 but it should work i think
it expects a 20Mhz crystal
changed config files are included for viewing

**stj** · 02-15-2023, 02:33 PM

i forgot to say,
you need to reprogram the 8 pin microcontroller that controls power, or replace it with a small circuit

jellytot · 02-15-2023, 03:55 PM

Thank's Stj

have you found this better than the original.

**stj** · 02-15-2023, 04:19 PM

yes,
lots of new features.
but the biggest thing was the circuit for power.
the original 8pin microcontroller seemed to not go into sleep-mode sometimes and was draining the battery

Rado108 · 07-18-2023, 10:16 AM

Which ESR meter would you reccomend for testing caps in vintage solid state audio gear? Do i need LCR so i can measure at different frequencys?

**stj** · 07-18-2023, 12:59 PM

vintage and solid-state arent 2 words you often hear together.
you mean 70's and 80's ?

02-14-2023, 10:42 AM	#1121
stj Great Sage 齊天大聖 Join Date: Dec 2009 City & State: Europe My Country: some shithole run by Israeli agents I'm a: Professional Tech Posts: 29,104	Re: ESR meter upgrades what cpu is in it?

02-15-2023, 12:18 PM	#1122
jellytot Member Join Date: Mar 2015 City & State: Galway My Country: Ireland I'm a: Knowledge Seeker Posts: 41	Re: ESR meter upgrades Atmega 644p

02-15-2023, 03:55 PM	#1125
jellytot Member Join Date: Mar 2015 City & State: Galway My Country: Ireland I'm a: Knowledge Seeker Posts: 41	Re: ESR meter upgrades Thank's Stj have you found this better than the original.

02-15-2023, 04:19 PM	#1126
stj Great Sage 齊天大聖 Join Date: Dec 2009 City & State: Europe My Country: some shithole run by Israeli agents I'm a: Professional Tech Posts: 29,104	Re: ESR meter upgrades yes, lots of new features. but the biggest thing was the circuit for power. the original 8pin microcontroller seemed to not go into sleep-mode sometimes and was draining the battery

07-18-2023, 10:16 AM	#1127
Rado108 New Member Join Date: Jul 2023 City & State: Rijeka My Country: Croatia I'm a: Knowledge Seeker Posts: 3	Re: ESR meter upgrades Which ESR meter would you reccomend for testing caps in vintage solid state audio gear? Do i need LCR so i can measure at different frequencys?

07-18-2023, 12:59 PM	#1128
stj Great Sage 齊天大聖 Join Date: Dec 2009 City & State: Europe My Country: some shithole run by Israeli agents I'm a: Professional Tech Posts: 29,104	Re: ESR meter upgrades vintage and solid-state arent 2 words you often hear together. you mean 70's and 80's ?