Easy to build Peltier cooling for Osram PL530
Posted: Thu Nov 07, 2019 9:29 pm
The Osram PL530 (DPSS laser module) is cheap and has very good beam quality but quite hard to run properly. After some unsuccessful attempts and one destroyed module i've found the laser is very sensitive to temperature and requires quite precise cooling. So, i've started to build cooling/powering system for it from ready parts, with minimal soldering.
The system has microcontroller (Heltec ESP32 WiFi LoRa module), DPS3005 step-down module, GY-39 sensor (to control environment's temperature, humidity, pressure and illumination), thermistor and small 5V step-down for microcontroller power. Later i plan to add one more DPS3005 module to be able slowly power-up laser's power regulators (somehow my PL530 doesn't want to start with full power and i have to reduce its current to zero and slowly increase it to get beam), and shutter servo. WiFi is used to provide small web-interface to see environment's conditions and current peltier's status.
If anyone is interested, i can make detailed instructions and firmware.
The system has microcontroller (Heltec ESP32 WiFi LoRa module), DPS3005 step-down module, GY-39 sensor (to control environment's temperature, humidity, pressure and illumination), thermistor and small 5V step-down for microcontroller power. Later i plan to add one more DPS3005 module to be able slowly power-up laser's power regulators (somehow my PL530 doesn't want to start with full power and i have to reduce its current to zero and slowly increase it to get beam), and shutter servo. WiFi is used to provide small web-interface to see environment's conditions and current peltier's status.
If anyone is interested, i can make detailed instructions and firmware.