GreenPill board specification

Generic boards that are not Maple or Maple mini clones, and don't contain the additional USB reset hardware
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Squonk42
Posts: 57
Joined: Thu Dec 29, 2016 9:25 am
Location: Bordeaux, France

Re: GreenPill board specification

Postby Squonk42 » Mon Jan 02, 2017 6:15 am

Yes, but not at this price point, even discounted it is 5x too expensive.

At $10, there are many more powerful boards available on the market.

What makes the Pill so atractive is the unbeatable power for the bucks ratio. Of course, you can get cheaper 8051 or AVR-based boards @ $1 or below, but they are not as powerful.

Even if the STM32F103RET6 is nice, it costs almost twice the price of the STM32F103C8T6 workhorse on Digi-Key... What makes the Pill so atractive is the availability of this chip (or clones thereof...) for peanuts, then exposing almost all of its capabilities in a small affordable board.

I think that to keep the Pill atraction, we should keep this price < $2 and try to correct the small cons on the existing Pill that that do not add to the overall cost, then find a way to produce it from China at this same price.

EDIT: The STM32F103C8T6 is the cheapest STM32 you can find on Taobao, starting @ ¥6.40 ($0.92), and the cheapest Blue Pill is @ ¥9.50 ($1.37). The cheapest STM32F103RET6 is @ ¥9.00 ($1.30). Should we go down the GD32F103C8T6 way (¥4.50 $0.65)?

stevestrong
Posts: 1019
Joined: Mon Oct 19, 2015 12:06 am
Location: Munich, Germany

Re: GreenPill board specification

Postby stevestrong » Mon Jan 02, 2017 8:47 am

I think, as there are several F1 boards on the net, it would only make sense to have an F4 one in blue pill size version.
And keep it simple & cheaper than the actual ~10EUR F4 boards.

racemaniac
Posts: 364
Joined: Sat Nov 07, 2015 9:09 am

Re: GreenPill board specification

Postby racemaniac » Mon Jan 02, 2017 10:27 am

stevestrong wrote:I think, as there are several F1 boards on the net, it would only make sense to have an F4 one in blue pill size version.
And keep it simple & cheaper than the actual ~10EUR F4 boards.

which 10€ f4 boards? on aliexpress there are a few 407's starting at 12€, and then it's quickly 20€ and more for the nucleo's

stevestrong
Posts: 1019
Joined: Mon Oct 19, 2015 12:06 am
Location: Munich, Germany

Re: GreenPill board specification

Postby stevestrong » Mon Jan 02, 2017 10:31 am

Like this one.
OK, it is a bit more than 10€, but it has lot of features which the GP (Green-Pill) does not need.
EDIT
Btw, it looks like the prices increased lately for the STM32F1 and F4 boards. I ordered this one for 10.59€ a month ago, now it is 11.91€, more than 10% increase. Is this only because of $/€ exchange rate?

bianchifan
Posts: 77
Joined: Sun Oct 18, 2015 1:27 pm
Location: W'tal, Germany

Re: GreenPill board specification

Postby bianchifan » Mon Jan 02, 2017 10:45 am

green chartreuse is nice, it remains me on my very first Epoxy PCBs in the late 70s ;)
F4 in blue pill pinout of course!

bianchifan
Posts: 77
Joined: Sun Oct 18, 2015 1:27 pm
Location: W'tal, Germany

Re: GreenPill board specification

Postby bianchifan » Mon Jan 02, 2017 10:48 am

green chartreuse is nice, it remains me on my very first Epoxy PCBs in the late 70s ;)
F4 in blue pill pinout of course!

michael_l
Posts: 319
Joined: Mon Aug 24, 2015 6:11 pm

Re: GreenPill board specification

Postby michael_l » Mon Jan 02, 2017 4:35 pm

Would the F103RET6 fit in blue pill board? That would also be nice upgrade because of increased flash and RAM!

victor_pv
Posts: 1249
Joined: Mon Apr 27, 2015 12:12 pm

Re: GreenPill board specification

Postby victor_pv » Mon Jan 02, 2017 4:41 pm

Squonk42 wrote:Yes, but not at this price point, even discounted it is 5x too expensive.

At $10, there are many more powerful boards available on the market.


I know, I was just making the point that there is a board in green color in similar form factor already.
But I think a RET6 in that form at a good price would be great.

racemaniac
Posts: 364
Joined: Sat Nov 07, 2015 9:09 am

Re: GreenPill board specification

Postby racemaniac » Mon Jan 02, 2017 4:47 pm

victor_pv wrote:
Squonk42 wrote:Yes, but not at this price point, even discounted it is 5x too expensive.

At $10, there are many more powerful boards available on the market.


I know, I was just making the point that there is a board in green color in similar form factor already.
But I think a RET6 in that form at a good price would be great.

nope, the RET6 is a 64pin microcontroller, and the bluepill has a 48 pin microcontroller :). you can't switch them...
that's why so far we experimented with the 303 and the 401 & 411, they have 48 pin microcontrollers that are a step up from the f103cb

victor_pv
Posts: 1249
Joined: Mon Apr 27, 2015 12:12 pm

Re: GreenPill board specification

Postby victor_pv » Mon Jan 02, 2017 4:55 pm

racemaniac wrote:nope, the RET6 is a 64pin microcontroller, and the bluepill has a 48 pin microcontroller :). you can't switch them...
that's why so far we experimented with the 303 and the 401 & 411, they have 48 pin microcontrollers that are a step up from the f103cb


I saw the other thread on the 303 swap to the blue pill and maple mini boards. Perhaps a 303 greenpill would give a good mix: same form factor, more peripherals, more compatibility, and M4 mcu.

Anyway I think I need to spend more time getting back to the projects I parked a year ago and less looking at more hardware, already have a full box of unused boards...


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