Cool! A 3.5$ STM32duino STM32F103C8 – Maple Mini

AnalogLamb
Mon Aug 15, 2016 5:30 am
Hello Everyone,

This is our new product – Maple Mini – STM32F103C8T6 – only for 3.5$. Can buy it from here
http://analoglamb.com/product/maple-min … 32f103cbt6

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This is our new product – MapleTree Mini – STM32F103RBT6- only for 9.0$. Can buy it from here
http://analoglamb.com/product/mapletree … leaf-maple

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This is our new product – MapleTree Mini RET6 – STM32F103RET6 – only for 10.0$. Can buy it from here http://analoglamb.com/product/mapletree … maple-ret6
http://analoglamb.com/product/mapletree … maple-ret6
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madias
Mon Aug 15, 2016 12:44 pm
Congrats!
The MapleTree Mini RET6 looks really promising for that price and has no compitition (price + form factor). I like the RET6 because of the outstanding specs (in contrast to the smaller STM32F103xx): 2x 12bit DAC’s, 2x I2s
I used a RET6 board for my 4-voice synthesizer project (4 channels over I2s out into analog filters)

RogerClark
Mon Aug 15, 2016 9:30 pm
@AnalogLamb

Can you post the schematic as a PDF, as I think people will be interesting in finding out if you can connect a battery and whether it has RCT 32KHz crystal,
Also we can see what USB reset circuit you use etc.

Is the connector in the top left of the photo, to connect a battery ?
I am mot sure if it is necessary as people can solder connections for this.
I don’t think the extra cost of a power connector is necessary

I don’t know if your board has this problem, but the micro USB connectors with 2 fixing points often break from the PCB.

Mini USB, or Micro USB with 4 fixing points seem to be stronger.


madias
Tue Aug 16, 2016 5:00 am
Eeeek, I was about to order a RET6 board as a sample, but as last step AFTER registering I saw that shipping is about 20 USD to Austria.
Sorry, but there is no relationship between 1/3 product costs and 2/3 shipping costs to me.

RogerClark
Tue Aug 16, 2016 5:32 am
Yikes

Thats far too expensive.

Postage changes from Aus to most places worldwide are around $5 USD ($7.50 AUD) and allow me to post up to 25gramm and up to 20mm thick, (which is OK for PCBs without pins soldered on)

As far as I was aware, China Post rates are even cheaper than this.


AnalogLamb
Thu Aug 25, 2016 2:19 am
madias wrote:Eeeek, I was about to order a RET6 board as a sample, but as last step AFTER registering I saw that shipping is about 20 USD to Austria.
Sorry, but there is no relationship between 1/3 product costs and 2/3 shipping costs to me.

AnalogLamb
Thu Aug 25, 2016 2:20 am
RogerClark wrote:Yikes

Thats far too expensive.

Postage changes from Aus to most places worldwide are around $5 USD ($7.50 AUD) and allow me to post up to 25gramm and up to 20mm thick, (which is OK for PCBs without pins soldered on)

As far as I was aware, China Post rates are even cheaper than this.


Pito
Thu Aug 25, 2016 7:03 am
Product Dimensions and Weight
Product Length:
10.0000M
Product Weight:
0.3000KG

I would not have problem with 10m long MapleTree Mini R1, but 0.3kg is far too much (because of shipment fees).
I get all the stuff from ebay of similar size and weight shipment free..

madias
Fri Aug 26, 2016 10:14 am
Pito wrote:Product Dimensions and Weight
Product Length:
10.0000M
Product Weight:
0.3000KG

I would not have problem with 10m long MapleTree Mini R1, but 0.3kg is far too much (because of shipment fees).
I get all the stuff from ebay of similar size and weight shipment free..

AnalogLamb
Mon Aug 29, 2016 5:45 am
Pito wrote:Product Dimensions and Weight
Product Length:
10.0000M
Product Weight:
0.3000KG

I would not have problem with 10m long MapleTree Mini R1, but 0.3kg is far too much (because of shipment fees).
I get all the stuff from ebay of similar size and weight shipment free..

AnalogLamb
Mon Aug 29, 2016 5:46 am
madias wrote:Pito wrote:Product Dimensions and Weight
Product Length:
10.0000M
Product Weight:
0.3000KG

I would not have problem with 10m long MapleTree Mini R1, but 0.3kg is far too much (because of shipment fees).
I get all the stuff from ebay of similar size and weight shipment free..

florisla
Sun Feb 25, 2018 8:56 pm
[RogerClark – Mon Aug 15, 2016 9:30 pm] –
@AnalogLamb

Can you post the schematic as a PDF, as I think people will be interesting in finding out if you can connect a battery and whether it has RCT 32KHz crystal,
Also we can see what USB reset circuit you use etc.

I was looking for a Maple Mini with Micro-B USB instead of the regular Mini-B connector, and the AnalogLamb maple mini seemed interesting. I found some schematics on AnalogLamb’s GitHub account.

The STM32 boards’ schematics are here:
https://github.com/AnalogLamb/Maple

The Maple Mini clone seems to have a full-featured USB reset. The linear regulator is shared between digital and analog.


mrburnette
Mon Feb 26, 2018 12:20 am
[AnalogLamb – Mon Aug 29, 2016 5:45 am] –

10m is a mistake clearly.

Ah, make a mistake in this forum and it’s the devil to pay :twisted:

Seriously, nice prducts, fair prices.

Ray


ag123
Tue Feb 27, 2018 7:24 am
[florisla – Sun Feb 25, 2018 8:56 pm] –
I was looking for a Maple Mini with Micro-B USB instead of the regular Mini-B connector, and the AnalogLamb maple mini seemed interesting.

one of a more recent craze : black pill, uses that Micro-B connector
http://wiki.stm32duino.com/index.php?title=Black_Pill
rather low cost and available on ebay / aliexpress etc


florisla
Tue Feb 27, 2018 10:25 am
Thanks,

I knew about the blue/red/black pill boards, but I’m fond of the maple mini’s compactness and full-featured USB reset circuitry.


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