Electronics and Embedded Systems, Microcontrollers, Arduino: Design power supply for SIM800L Core Board
![SIM800L Module With Antenna, Replacement Convenient 3.3 V And 5 V GSM/GPRS Module, For Project Embedded Type - Walmart.com SIM800L Module With Antenna, Replacement Convenient 3.3 V And 5 V GSM/GPRS Module, For Project Embedded Type - Walmart.com](https://i5.walmartimages.com/asr/e4c256db-184b-42ca-8380-e5d6c6f5efb6.a9c6b20efe5533877b5eabac0df0c4c9.jpeg?odnHeight=768&odnWidth=768&odnBg=FFFFFF)
SIM800L Module With Antenna, Replacement Convenient 3.3 V And 5 V GSM/GPRS Module, For Project Embedded Type - Walmart.com
K-Technics - A combination of gsm sim 800l + power supply step down module lm2596 The power supply provides you with 2A and you can regulated to preferred voltage of 3.7v-4.2v. Advantage:
Electronics and Embedded Systems, Microcontrollers, Arduino: Design power supply for SIM800L Core Board
![SIM800L GPRS GSM Module Micro SIM Card Core Quad-band TTL Serial Port Antenna PCB Wireless WIFI Board For Smart Phone - AliExpress SIM800L GPRS GSM Module Micro SIM Card Core Quad-band TTL Serial Port Antenna PCB Wireless WIFI Board For Smart Phone - AliExpress](https://ae01.alicdn.com/kf/S5d65bb93008c40d6b8e0a5695303a611Y.jpg_640x640Q90.jpg_.webp)
SIM800L GPRS GSM Module Micro SIM Card Core Quad-band TTL Serial Port Antenna PCB Wireless WIFI Board For Smart Phone - AliExpress
![Amazon.com: SIM800L Module GSM GPRS SMS 5V Module Wireless Extension Module with Antenna Replacement for SIM900A : Electronics Amazon.com: SIM800L Module GSM GPRS SMS 5V Module Wireless Extension Module with Antenna Replacement for SIM900A : Electronics](https://m.media-amazon.com/images/I/71YXP6mAbtL._AC_UF894,1000_QL80_.jpg)