Sim800L-red-breakout-module-21-5mm-width.fzpz (7. YwRobot Breadboard Power Supply MB-V2 ( 3V3 & 5V 5V & 5V 3V3 & 3V3) Arduino WiFi Shield Since the Fritzing parts repository ( /p/fritzing/issues/detailid2753) is no longer available for sharing parts, they will be posted here instead. Replaced the part with one with the correct pin width (the pins are not on a 0.1in boundary!) Before ordering boards print out the footprint at 1:1 scale and compare it to a real board to make sure the pins are in the correct place. Note the pin placement is from a jpg file and may well not be correct. There are lots of such modules available and may be some with Fritzing parts. ![]() ![]() Otherwise depending on your input voltage you may need to find a 2A adjustable output boost/buck module (which can take an input voltage both lower or higher than the output voltage) to power this. You could (as they suggest) use a LIPO battery (3.7 to 4.2V) directly. The LM2596 is a step down regulator and thus would need 5V to produce a 4V output. arduino sends out a signal through pin 8 (or any other digital pin) to switch on the 5v Relay. Specification Supply voltage: 3.8V - 4.2V guidance needed with this plant watering set-up ive hooked up a 12v power source to a 9v voltage regulator which powers the arduino through Vin & gnd. Problem number2, the GSM module wants 4V not 5V There are 2A boost modules readily available some even have Fritzing parts (the lm2596 for instance, which is recommended in the data sheet, is on core parts.) In any case here is the requested booster as it is made now. The sim800l under some circumstances can draw 2A and thus this power supply is not big enough. ![]() After I made this module, I read the sim800l manual.
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