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  1. B

    Switching DC motor with TIP122 and Arduino

    I think this may help: https://electricdiylab.com/arduino-tip122-dc-motor-control/
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    Help Understanding Simulation Errors

    I think you'll get more accurate answers if you post this to KiCad forum.
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    Hello Everyone!

    Welcome to Maker Pro. Nice to know you.
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    What is likely wrong

    I think normally there was a pcb track that connected point 1 and 2. Somehow the track was broken.
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    Home brewing fermentation monitoring

    Here is also an interesting project. This is not what you're doing. But it can give you some more ideas. It's a tea bag timer: https://www.pcbway.com/project/shareproject/Arduino_Tea_Bag_Timer_9dc5054b.html
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    Doors AND wall activated cabinet lights

    I think you can proceed with a magnetic door switch, Arduino UNO and relay module. https://www.sparkfun.com/products/13247 www.theengineeringprojects.com/2012/10/introduction-to-relay.html
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    Bypass touch switch

    I think, without the schematic it is difficult to tell.
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    Home brewing fermentation monitoring

    For sensing the bubbles, you can use a microphone to detect the sound of the bubbles and a tilt switch to detect the motion of the liquid.
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    Need help specifying certain motor

    Just in case you find this helpful: https://www.treadmillreviews.net/treadmill-motors-what-you-need-to-know/
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    Need a support for IAR-STM8

    I am not that experienced in STM. But I found the arm forum helpful in case of STM microcontrollers. You can post your questions there: https://community.arm.com/
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    ESP32 wroom32 Bluetooth dBm

    You can post your question to ESP32 forum if you already have not.
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    USB charging

    You need to know the charging specifications of the battery pack and the charger. Then, you can find a voltage step-down converter that can convert the 5V car port power to the required voltage for charging the battery pack. You may also need to use a smart charge controller.
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    Look for some kind of controller for a DYI digital picture frame

    You can proceed with Raspberry Pi zero. Do not forget to add Dedicated Aluminum Heatsink for Raspberry Pi Zero to your project.
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    Motorcycle on sensor

    You can use a relay connected directly to the battery to control your hand warmers.
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    Programming LEDs individually

    You can do this task with an Arduino and 2 LEDs. You will need to connect the two LEDs with 2 PWM pins.
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    Home Based Income as an Electronics Hobbyist

    I don't know where you live but TV or home electronics repair still has good prospects where I live. Anyway, I think you can open accounts on freelancing platforms like upwork, freelancer and fiverr. You will find many electronics-related works which you can do online.
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