ESR meter upgrades

[vinceroger69]

Re: ESR meter upgrades

@vinceroger69 & GoNzO

test versions.
the bangood ones probably work, but you need to let me know the best contrast value.

the old text display one has 2 possible wirings, so i made both - vince - let me know which one works when your ready.

will do in about a hour stj as just got new atmega chip from rs so will use it to run tests

[stj]

Re: ESR meter upgrades

manual

[stj]

Re: ESR meter upgrades

will do in about a hour stj as just got new atmega chip from rs so will use it to run tests

you got a surface-mount one? that was fast.

[vinceroger69]

Re: ESR meter upgrades

no the other one for my 2016 tester just in case is faulty in anyway the smd ic still not come as yet.

[GoNz0]

Re: ESR meter upgrades

@vinceroger69 & GoNzO

test versions.
the bangood ones probably work, but you need to let me know the best contrast value.

the old text display one has 2 possible wirings, so i made both - vince - let me know which one works when your ready.

43 contrast is good, the default 40 is also fine tbh

10bit PWM is exactly that, it can generate a PWM signal (5v) with 1024 steps controlled by the encoder.

handy maybe for testing dimmers or servo's

and fans?

[vinceroger69]

Re: ESR meter upgrades

standard 16mhz just a blank screen then powers off
strip grid blank screen tester stays on untill powerd off

[stj]

Re: ESR meter upgrades

standard 16mhz just a blank screen then powers off
strip grid blank screen tester stays on untill powerd off

those are for your old character-display tester - hence the 2x16 and reference to surface-mount cpu

dont put them in the new one!

[stj]

Re: ESR meter upgrades

and fans?

no idea, i dont have any.
maybe fans - maybe even invertor brightness.

[vinceroger69]

Re: ESR meter upgrades

Thanks for the files for my old tester will update you when the smd ic comes and i forgot to pick up the right angled header so just ordered one.
My 2016 tester works great now so far i have just added the 16 mhz crystal changed the voltage regulator and used the new atmega 328p ic and updated firmware too your small font 16 mhz one and calibrated the unit seems to work ok now so thanks for your help with this tester i will continue with the old tester asap.

[vinceroger69]

Re: ESR meter upgrades

Thanks for the files for my old tester will update you when the smd ic comes and i forgot to pick up the right angled header so just ordered one.
My 2016 tester works great now so far i have just added the 16 mhz crystal changed the voltage regulator and used the new atmega 328p ic and updated firmware too your small font 16 mhz one and calibrated the unit seems to work ok now so thanks for your help with this tester i will continue with the old tester asap.

just a thought stj i wasnt going to change the power button on this spare tester so no rotary encoder will your files still work ok?
another question im thinking of fitting the blue led screen i have spare here for this tester you mentioned i may have to alter the resistors? as blue uses diffrent voltages anyidea what size smd resitors and ohms value i may need so i can add some to rs order thanks.

[stj]

Re: ESR meter upgrades

software works fine without the encoder,
as for the led, you need the exact part number of the display to get the datasheet.

[diif]

Re: ESR meter upgrades

TFT - i have someone dropping one of those off to be built with extra bits soon.

question, did you add the battery cable connector? i'v not seen it in the picture of parts - i thought the cable was soldered to the board?
(i was going to add a molex header anyway )

Yes, i added the molex connector, I didn't like the soldered wires and i have plenty of spares, it felt a bit flimsy and I changed the battery connector to one of the hard plastic types.

Thanks for the info on the 10 bit PWM setting. I don't think it's a feature i'll need to use.

Impressive bit of kit for £11.

[stj]

Re: ESR meter upgrades

everything from china is impressive, i suspect it's just that we have been ripped-off for so long that the real cost of stuff is a shock to us.

i just picked 2 these up:
http://www.ebay.co.uk/itm/321454659128
i remember paying £8 for one in maplin over 20years ago!

and some of these to go with it.
http://www.ebay.co.uk/itm/141666306520

[diif]

Re: ESR meter upgrades

everything from china is impressive, i suspect it's just that we have been ripped-off for so long that the real cost of stuff is a shock to us.

i just picked 2 these up:
http://www.ebay.co.uk/itm/321454659128
i remember paying £8 for one in maplin over 20years ago!

and some of these to go with it.
http://www.ebay.co.uk/itm/141666306520

Back when Maplins was good and the staff could suggest alternative components for your projects.

[stj]

Re: ESR meter upgrades

lol - dont get me started on that.
last time i was in one, the woman gave me the wrong resistors.
she said they were in the right drawer and thought i was messing her about - she had no idea the coloured bands actually meant anything!!!!!!!!!!!!!!!!!!!

[diif]

Re: ESR meter upgrades

The colours mean something ?? I thought they were just to pretty those thingys up !!

I nipped in as I was on a job and needed a 1m patch cable.

"£13 for a Cat6e, is the cheapest we have mate"
"Thanks, I'll be going to the pound shop over the road then"

[bmht]

Re: ESR meter upgrades

Hello All

This is my first post in here and I was referred by another member since sadly I bough a tester from

http://www.ebay.com/itm/191869802386...%3AMEBIDX%3AIT and it came bad.

The tester doesn't turn not. When I press the rotary button the LCD lits and as soon as I release the button it turns off.
I tried to reprogram the chip using the files from mega328_st7565_kit (the last ones on the site).
TransistorTester.eep dated 4/21/2016
TransistorTester.hex dated 7/9/2016

but I do not know it it was success or not

C:\AVR>avrdude -c usbasp -p m328p -F -B 4.0 -e -U flash:w:"TransistorTester.hex"
:i -U eeprom:w:"TransistorTester.eep":i -U lfuse:w:0xF7:m -U hfuse:w:0xD9:m -U e
fuse:w:0x04:m

avrdude: set SCK frequency to 187500 Hz
avrdude: warning: cannot set sck period. please check for usbasp firmware update
.
avrdude: AVR device initialized and ready to accept instructions

Reading | ################################################## | 100% 0.01s

avrdude: Device signature = 0x1e950f
avrdude: erasing chip
avrdude: set SCK frequency to 187500 Hz
avrdude: warning: cannot set sck period. please check for usbasp firmware update
.
avrdude: reading input file "TransistorTester.hex"
avrdude: writing flash (29952 bytes):

Writing | ################################################## | 100% 20.10s

avrdude: 29952 bytes of flash written
avrdude: verifying flash memory against TransistorTester.hex:
avrdude: load data flash data from input file TransistorTester.hex:
avrdude: input file TransistorTester.hex contains 29952 bytes
avrdude: reading on-chip flash data:

Reading | ################################################## | 100% 15.55s

avrdude: verifying ...
avrdude: verification error, first mismatch at byte 0x0000
     0x00 != 0x2d
avrdude: verification error; content mismatch

avrdude: safemode: lfuse changed! Was f7, and is now 8c
Would you like this fuse to be changed back? [y/n] n
avrdude: safemode: hfuse changed! Was df, and is now 0
Would you like this fuse to be changed back? [y/n] n
avrdude: safemode: efuse changed! Was 1, and is now 6
Would you like this fuse to be changed back? [y/n] n
avrdude: safemode: Fuses OK (E:01, H:DF, L:F7)

avrdude done. Thank you.

I got a spare blank chip. do you think I should try with that one? In case it doesn't work will I be able to reprogram my spare for use with arduino?

I'm sorry to be this cheap but where I live those chips are not easy to come by and bringing them in here is expensive.

Thank you all for your help
Belen

[vinceroger69]

Re: ESR meter upgrades

I saw your post on eevblog are you programming the chip on the esr pcb? though a fitted header?

[stj]

Re: ESR meter upgrades

i dont know where you got the command for USBasp from,

try this:

avrdude -c USBasp -P usb -p m328p -U flash:w:Code.HEX \-U eeprom:wata.HEX \-U lfuse:w:0xf7:m \-U hfuse:w:0xd9:m \-U efuse:w:0xfc:m

and try these files:

[stj]

Re: ESR meter upgrades

that's the original software read from a working one.