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SIM 800L LM2596 power board
SIM800L LM2596 power board providing stable 4V output with high current capability—ideal for powering SIM800L GSM modules reliably.
The SIM800L LM2596 Power Board is a dedicated power supply module designed to safely and reliably power SIM800L GSM/GPRS modules. It is based on the LM2596 DC-DC buck converter, which efficiently steps down higher input voltages to the stable 3.8–4.2V output required by the SIM800L.
This power board is capable of delivering high peak currents (up to 2A) needed during GSM transmission bursts, preventing module resets and communication failures. It includes onboard filtering and protection, ensuring stable operation even under fluctuating loads.
The SIM800L LM2596 power board is ideal for Arduino, ESP32, ESP8266, and IoT GSM projects, simplifying power design and improving overall system reliability.

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- Rated maximum output: ± 4.5A, 40V, Peak 5A, low output impedance, source 0.5?,
- the receiving end of 0.4?, low voltage shutdown, thermal parking and circulation.
- circuit protection. After I design, you can set the current output of 0.5A 1A 1.8A 2.5A.
- 3.3A 4A 4.5A to accommodate more and different motor Current.
- The drive is suitable software mach2, mach3, (mach3 have support WIN7 system), KCAM4 like.
Text to Speech TTL Module (Serial to Speech)
-  Single row 0.1″ header for easy connection to a host system
- Power requirements: +5 VDC
- 30 mA idle
- 46-220 mA active (depending on speech parameters and output load)
- Â Communication: Asynchronous 9600 bps serial (8N1)
- Dimensions: 1.25″x1.5″x0.37″
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Text support rate is better
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 Interface operation is simpler
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5V single power supply.
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Output directly connected to the speaker, can drive 4 ohms 3W / 8 ohm 2W speakers
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Busy status output, can be connected to the microcontroller IO or indicator light, no need to be left floating.
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 Voice effect optimization
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 Module miniaturization and easy integration
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Dimension: 33*27.5mm
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With mounting holes

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