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STM32 Sensor V5.0

STM32 Sensor V5.0

Created by freynder on 2018-09-08 18:53:35

2 Layer Board - 1.1200 sq in (1.4000in x 0.8000in) / 722.58 sq/mm (35.56mm x 20.32mm)
$4.48 per set of 4 ($4.00 per sq in)

A Small STM32F103C8T6 board with all functional pins exposed. Similar to the BluePill board except:

  • no regulator. Will be powered by 2 AA batteries.
  • no USB
  • No LED
  • No BOOT0/BOOT1 jumper pins. BOOT0 can be pulled high by a button, BOOT1 is pulled low permanently but exposed by a PIN.
  • smaller crystals
  • RFM69CW + RFM69(H)W + RFM69HCW footprints + u.FL connector
  • VBAT can be disconnected from VCC by cutting the solder jumper on the back.

Parts can be sourced from aliexpress.

The size is 36.56mm x 20.32mm (1.4" x 0.8"). 5 mils trace width and clearance. 20 mils edge clearance.

Tested succesfully V3 with jlcpcb order.
Test failed with V3.4 pcbs.io order due to imposed edge clearance. Should be corrected as of V4.3.
V5 has not yet been tested.

github repo: https://github.com/freynder/STM32_Sensor

Pinout diagram (draft)

Pinout Diagram (draft)

BOM

BOM

License: CC-BY 4.0
Project URL: https://github.com/freynder/STM32_Sensor
Tags: stm32 rfm69 sensor mysensors node stm32f103c8t6 stm32f1 sensor small

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E73 breakout

E73 breakout

Created by freynder on 2018-05-29 19:30:40

2 Layer Board - 1.6867 sq in (1.3759in x 1.2259in) / 1088.19 sq/mm (34.95mm x 31.14mm)
$6.66 per set of 4 ($3.95 per sq in)

Small breakout board with SWD headers for the EByte NRF52832 Module. All pins are accessible.

License: CC-BY 4.0
Project URL: https://www.openhardware.io/view/586/E73-2G4M04S-Breakout
Tags: e73-2g4m04s e73 nrf52832 nrf52 nrf5 breakout

Say "Thank You"



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Top View - Complete Board

Top View - Complete Board

This is what your finished board will look like from the top.

Bottom View - Complete Board

Bottom View - Complete Board

This is what your finished board will look like from the bottom.