Cool! A 3.5$ STM32duino STM32F103C8 – Maple Mini

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

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

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

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)

@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.

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.

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.

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.

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.

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..

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..

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..

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..

[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.

[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

Seriously, nice prducts, fair prices.

Ray

[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

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.