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Parts confusion

Posted: Mon Jan 06, 2025 10:19 pm
by VK3XKA
Hi ... Andy VK3XKA here.

I am in the process of building the Pico Tuner ver 3 and have noticed a couple of resistor conflicts. The parts list and the circuit diagram differ with r4 and r5.There may be other conflicts that I have not yet discovered.
R4 is 2.32k on Parts list and 4k7 Circuit diagram
R5 is 1k on Parts and 1k8 Circuit diagram

Which is correct??? I presume the Parts list (I got from DigiKey) is correct. Maybe the cct drag needs updating?

Andy SALMON
VK3XKA

Re: Parts confusion

Posted: Tue Jan 07, 2025 8:33 pm
by g0mjw
Both are correct. It is a voltage divider setting the voltage. Maybe I will delete the BOM.

Re: Parts confusion

Posted: Wed Jan 08, 2025 8:05 am
by radiogareth
The BOM is very helpful to occasional hobbyists....I'd delete the precision resistor and use the E12 pair, something that said hobbyists may have in a selection pack......but then they wouldn't need to order them.....
Gareth

Re: Parts confusion

Posted: Wed Jan 08, 2025 12:34 pm
by g0mjw
That's what I did, but maintaining a BOM is a never ending task. Components go out of stock, part numbers change. Nightmare.

Re: Parts confusion

Posted: Mon Jan 13, 2025 2:39 pm
by G4HTZ
g0mjw wrote:
Tue Jan 07, 2025 8:33 pm
Both are correct. It is a voltage divider setting the voltage. Maybe I will delete the BOM.
Thanks for doing the BOM …I just received the order as per the BOM …so much easier to use a list and paste it into Digikey …


ordered the digikey order the same day as the BATC order for the pcb and nim …..digikey made it across the Atlantic in 3 days …still waiting for my BATC order to arrive :D :D :D

Re: Parts confusion

Posted: Mon Jan 13, 2025 5:55 pm
by g3uis
Digikey is a large corporation with hundreds of paid staff. BATC is run entirely by volunteers, who do everything in their spare time.

Perhaps that’s something to do with it ?

Re: Parts confusion

Posted: Mon Jan 13, 2025 6:19 pm
by G4HTZ
g3uis wrote:
Mon Jan 13, 2025 5:55 pm
Digikey is a large corporation with hundreds of paid staff. BATC is run entirely by volunteers, who do everything in their spare time.

Perhaps that’s something to do with it ?
Blimey no sense of humour??? Hence the laughing faces ,…….I honestly give up …people have no sense of humour anymore

Re: Parts confusion

Posted: Tue Jan 14, 2025 11:45 am
by g8gtz
Actually Steve it's not about being touchy, Roger was just saying the way it is :)

And yes occasionally I do get just a little bit peeved when people imply the service is not up to scratch as several of us spend many hours a week keeping BATC running for the members - I'll be going to the post office today with a bunch of orders which I've just put together.

73
Noel - G8GTZ

Re: Parts confusion

Posted: Tue Jan 14, 2025 2:01 pm
by G4HTZ
g8gtz wrote:
Tue Jan 14, 2025 11:45 am
Actually Steve it's not about being touchy, Roger was just saying the way it is :)

And yes occasionally I do get just a little bit peeved when people imply the service is not up to scratch as several of us spend many hours a week keeping BATC running for the members - I'll be going to the post office today with a bunch of orders which I've just put together.

73
Noel - G8GTZ
Hi Noel
I am sure the majority of members realise it’s a voluntary service …but obviously there’s a few that don’t ……anyway still waiting for my order so hurry up down the post office ……
Regards
Steve