Crowduino — ELECROW - FORUM https://forum.elecrow.com/index.php?p=/ Thu, 09 Apr 2026 20:55:34 +0000 en Crowduino — ELECROW - FORUM How to DIY Fingerprint Lock Box https://forum.elecrow.com/index.php?p=/discussion/311/how-to-diy-fingerprint-lock-box Fri, 02 Sep 2022 09:16:33 +0000 Projects Eleanor 311@/index.php?p=/discussions Project Introduction: After inputting the fingerprint lock off signal, the steering gear rotates 90 °, and the rocker arm intersects with the U-shaped plastic, so that the box cannot be opened. After pressing the fingerprint scanner again, the steering gear rotates 90 ° in the opposite direction, and the rocker arm is parallel with the U-shaped plastic, so that the box can be opened.

Material preparation:

Fingerprint scanner*1 Servo*1 Crowduino*1(or Arduino)*1 Base shield for Crowduino*1 U-shaped plastic*1 Box*1 Cables

Circuit connection:

Pinmap of fingerprint scanner:

Operation steps:

Step1. Paste the steering gear in the box, mark the appropriate position of the U-shaped material, and then stick the U-shaped plastic on the box cover. Step2. Mark the location of crowduino, cut out the hole of USB interface, and then stick crowduino in the box. Step3. Paste the square fingerprint scanner and cut the box cover. Step4. Connect the cables according to the wiring table. Step5. Connect Crowduino and the computer with USB cable, upload the program to Crowduino, and enroll the fingerprint Step6. Start using! ]]> Smart Watering Kit - do you need to use the four sensors ? https://forum.elecrow.com/index.php?p=/discussion/272/smart-watering-kit-do-you-need-to-use-the-four-sensors Mon, 09 May 2022 13:38:02 +0000 Community Sicabol 272@/index.php?p=/discussions Hi !

I've received the kit lately, and I have just plugged everything. I only need to water two plants, so I haven't plugged two sensors. Still the water comes from the four tubes. Does it mean I need to change the default program ?

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