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Std edition AxhTherm2 5V

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License: GPL 3.0

Published Time: 2022-06-09 16:03:29
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Description
AxH is an Italian Community of homebrewing passionates. AxHTherm is a smart device born to help home brewers to take control of their fermentation chambers. It allows to define temperature steps, temperature ramps, and gravity set points to guide your fermentations! You don't have to be nearby your fermentation chamber anymore! With AxHTherm you can remotely manage your fermentations, and track their progress with the aid of BrewFather and/or ThingSpeak integration! Remote control is possible straight from your smart device and/or your PC. AxHTherm 2V5 is an enhanchement of AxHTherm project. This project was born to give a PCB to facilitate the assembling of a Temperature Controller (AxH Therm) but at the end it becames a general purpose PCB. It include - 8 Outputs ( controlled by ULN2803). 3 outputs are driven directly by wemos with 3 status indicators (led) and the others via I2C - 3 additional I/O controlled by I2C - I2C bus (for OLED and more) - Serial Bus - Tiny RTC - ... and more This PCB is part of AxH project and its scope is to provide an easy component to facilitate AxHTherm's assembling process. More details and Firmware are available on https://iobrewing.it
Design Drawing
schematic diagram
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PCB
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ID Name Designator Footprint Quantity
1 Probe PROBE,RELAY H3-5.0-15.5X8.0MM 2
2 Power POWER H3-5.0-15.5X8.0MM 1
3 Tiny RTC I2C module RTC TINY RTC I2C MODULE 1
4 4pin I2C monochrome OLED Display OLED 4PIN I2C MONOCHROME OLED DISPLAY 1
5 ULN2803APG ULN DIP-18 1
6 WEMOS D1 MINI D1 WEMOS D1 MINI 1
7 HM10-2.54_1x4 SERIAL HDR-4X1/2.54 1
8 LED-5MM LED1,LED2,LED3 LED-5MM/2.54 3
9 RESET IPE JUMPER2 1
10 JUMPER_ULN UPWR JUMPER2 1
11 I2C_STANDARD STD_I2C 1X04 1
12 4.7kΩ R4 AXIAL-0.4 1
13 1kΩ R1,R2,R3 AXIAL-0.4 3
14 1k R9.3/4 AXIAL-0.4 1
15 Header-Male-2.54_1x20 P1 HDR-20X1/2.54 1
16 47PF C1 RAD-0.2 1
17 MCP23008-EP MCP DIP18 1

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