SumoCHIP Version 1.1 https://github.com/laurivosandi/sumochip

HydraBus v1.0 Shield for ESP-WROOM-32/ESP-32S V1.1 Rev1.0

HydraBus Shield / Breakout board for ESP-WROOM-32 or ESP-32S.

This shield can be used with or without HydraBus board, you can even cut HydraBus specific right side (on the line) to have a tiny ESP-WROOM-32 breakout board.

It is not mandatory to solder the components on this shield in order to use it, you will just need to connect +3v3 on VCC Pin header

• New features versus previous version V1.0 Rev1.1:

  • Added LDO (TPS73633DBVR SOT23-5) to convert 5V(VUSB) to a clean VCC (+3.3v) for ESP32 and which can be enabled by an HydraBus Pin or with a JUMPER on J7 (which connect +3.3V from HydraBus to EN of the LDO)
  • Added VCC connector in order to measure ESP32 current/power consumption (if not used to measure current just add a JUMPER on VCC to power the ESP32)
  • Added J6 connector to have access to ESP32 SPI FLASH IOs (now all pins are available)

• This shield can be used only on bottom of HydraBus board (in order to use other shields on top of HydraBus)

• The HydraBus board is a small (60mm x 37mm) and low cost, multi-tool extensible board with STM32F405 Cortex M4F 32bits MCU @168MHz with a fully open source firmware hydrafw and full online documentation hydrafw wiki

• The ESP-WROOM-32 is a low-power 32-bit 240 MHz dual core MCU Wi- Fi+BLE combo module that highly integrates TCP/IP network stacks, 12- bit ADC and HSPI/SDIO/UART/PWM/I2C/I2S interfaces. See ESP32 Overview, ESP-WROOM-32 link/info, Espressif Products Overview including ESP-WROOM-32 PDF

• Design based on official esp_wroom_32_datasheet_en.pdf (September 26, 2016)

BOM:

Note1: LDO U2 can be also replaced by MIC5319-3.3YD5-TR (Microchip)

Note2: If you do not want to solder those components you can avoid them and directly connect HydraBus 3v3 to VCC Pin near J5 marking

Tested with success with an ESP-32S Module from Ai-Thinker (it is recommended to use official Espressif ESP-WROOM-32)

For more details see the project on GitHub hydraESP32

CATS PCB

This is a corrected file for the 3 axcon

Ghetto PoE 5V v0.1

A board designed to take 5v from a micro USB connector and send it down a CAT5/CAT6 cable for breakout and use at the remote end.

The board sends power down all 4 pairs, so the current carrying capacity is maximised, and should be good for around 500mA. Note that voltage drop will be an issue over long cable runs.

The BOM is pretty basic:

• An RJ45 port, with LEDs (of which only the right, green, one is used to indicate power). I’ve used the Amphenol RJHS-4081.

• Micro USB PCB mount connector. I use cheapos from aliexpress.

• A current limiting 0603 resistor for the LED - I’m using a 1.5K to keep power use down.

• A 1206 0.5A hold current, 1A trip current resettable fuse. I’m using Littelfuse 1206L050YR.

USE THIS VERSION INSTEAD: https://oshpark.com/shared_projects/kHW2ONDo

Buzz FPV electronics

patch 5.8

Schematic and Bill of materials at: https://github.com/mike-rankin/3.3v-5v_0.95inch_SPI_Color_Oled

Grab the shared PCB from OSHPark at https://www.oshpark.com/shared_projects/Vlc5MLaO

Reach me at @mikerankin for any questions or comments

V1a breaks out PA15 and changes the 32kHz crystal to a larger and cheaper ABS6.

An STM32L4 microcontroller in a Teensy form factor. This board was designed as a 2-layer PCB with all components on the top side as a more cost-effective, very low power Cortex M4 alternative. Design inspired by Kris Winer’s Dragonfly and Paul Stoffregen’s Teensy.

Includes both low-speed and high-speed oscillators, a supercapacitor RTC backup, an extremely low Iq LDO regulator, and flash memory. The supercapacitor’s VBAT pin is broken out such that an external coin cell or supercapacitor may be used.

5v Control

A SAMD21G18-based breakout board for wireless sensor node and automation purposes. This board is essentially a mash up of Felix Rusu’s excellent Moteino board and S. Swift’s equally excellent Neutrino. This board is intended to be used as a test bed for LoRA RFM95/96/97/98 radio modules, and testing their potential with Adafruit’s new MicroPython port for the SAMD21G18.

An STM32L4 microcontroller in a Teensy form factor. This board was designed as a 2-layer PCB with all components on the top side as a more cost-effective, very low power Cortex M4 alternative. Design inspired by Kris Winer’s Dragonfly and Paul Stoffregen’s Teensy.

Includes both low-speed and high-speed oscillators, a supercapacitor RTC backup, an extremely low Iq LDO regulator, and flash memory. The supercapacitor’s VBAT pin is broken out such that an external coin cell or supercapacitor may be used.

RC2014 VFD / LCD Display board