ebay 103c8t6 oled, nrf24, esp8266 + empty pads

Generic boards that are not Maple or Maple mini clones, and don't contain the additional USB reset hardware
scoace
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Joined: Sat Jan 23, 2016 6:50 am

Re: ebay 103c8t6 oled, nrf24, esp8266 + empty pads

Post by scoace » Tue Mar 14, 2017 7:56 am

Anyone a good schematic in pdf format for this board ?

zmemw16
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Location: St Annes, Lancs,UK

Re: ebay 103c8t6 oled, nrf24, esp8266 + empty pads

Post by zmemw16 » Tue Mar 14, 2017 12:19 pm

https://s3-ap-southeast-1.amazonaws.com ... 363817.jpg

that's about as good as it gets, however most of it is boiler plate.
if you can find any one of PA4-PA7, that's SPI1 etc.
same sort of thing for the I2C & UART's etc
OLED might be a problem.

all a bit of match the blobs jigsaw :D

i just tried looking at it with GIMP, it is just about readable.

stephen

scoace
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Joined: Sat Jan 23, 2016 6:50 am

Re: ebay 103c8t6 oled, nrf24, esp8266 + empty pads

Post by scoace » Tue Mar 14, 2017 7:52 pm

Thanks Stephen, but that's exactly what i have found on the net. I would like to connect a NRF2401 and i can hardly read the pin#.

The NRF2401 Socket should be:

1 GND 2 VCC
3 PB0 CE 4 PB2 CSN
5 PA5 SCK 6 PA7 MOSI1
7 PA6 MISO1 8 PA15 IRQ

zmemw16
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Location: St Annes, Lancs,UK

Re: ebay 103c8t6 oled, nrf24, esp8266 + empty pads

Post by zmemw16 » Wed Mar 15, 2017 2:51 pm

nrf24 8 pin signals

Code: Select all

1 GND 
2 VCC
3 PB0 CE 
4 PB2 CSN
5 PA5 SCK 
6 PA7 MOSI1
7 PA6 MISO1 
8 PA15 IRQ
& datasheet has PB as

Code: Select all

PB0
PB1
PB2 boot1 ***
PB3
PB4
PB5
PB6 i2c ***
PB7 i2c ***
so i'm not sure CE & CSN are on PB, i'm inclined to see those blobs as PC and a single digit.
i'd also have to suspect PB2 is incorrect, can't see them over-riding I2C1 either.
SPI1 and IRQ i agree with
using PC[0-7] 0-5 ADC 6-7 TIM3 would lose ADC's only, say PA4, PA5 ?
one of my boards has PA4 and PC4 for those 2 signals, PA4 is logical as its the default SPI1 cs line.
check which is really the nrf24 cs line, funny feeling it's CSN and CE is tx/rx mode switch

so it's waggling bits and observe using a led & resistor time :D
thought of building a Pig-O-Scope? then its waggle all at different rates etc etc
i've got OpenBench Logic Sniffer's for doing that.

stephen

RogerL
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Location: England

Re: ebay 103c8t6 oled, nrf24, esp8266 + empty pads

Post by RogerL » Wed May 31, 2017 5:50 pm

I have just noticed that the lowest ebay UK price for these boards has dropped by about 25% in the last few days:

http://www.ebay.co.uk/itm/272517368216? ... EBIDX%3AIT

http://www.ebay.co.uk/itm/292046951651? ... EBIDX%3AIT

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ahull
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Re: ebay 103c8t6 oled, nrf24, esp8266 + empty pads

Post by ahull » Wed May 31, 2017 11:00 pm

With those radio pads, they look like they were designed with a specific purpose in mind, perhaps a Walkera DEVO 2.4GHZ remote clone, or some such device.. Interesting..
- Andy Hull -

democles9308
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Joined: Fri Oct 13, 2017 6:57 pm

Re: ebay 103c8t6 oled, nrf24, esp8266 + empty pads

Post by democles9308 » Sat Oct 14, 2017 1:02 pm

The Pins are certainly BP0 en BP2 as indicated on the diagram posted earlier. Those pins are respectively pin 18 and 20 on the STMChip - did the test with a multimeter. I can't get the NRF module working using the (reworked) RF24 library. Did one of you got it working ? If so which library, any mods necessary ?
Thx

stevestrong
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Location: Munich, Germany

Re: ebay 103c8t6 oled, nrf24, esp8266 + empty pads

Post by stevestrong » Sat Oct 14, 2017 4:53 pm

For NRF24 lib please have a look here: viewtopic.php?f=9&t=2028

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