But I don’t have one, so later on I’ll be talking about the wider-angled A model. It can be turned in place (manually or via a drive) to make combined images way more detailed than its 32x24 resolution. The datasheet says it’s also less noisy and more accurate.īut for visualization I’d recommend the more “eagle-eyed” B model, for one very important reason. The wider-angle version is best suited for self-driving robots or CCTV systems (since its field of view is better). I haven’t thought about it when choosing. Which one will work best? Unfortunately, I only asked myself this question after the module has been ordered, shipped and received. It looks like this:Īs we can see, there are also two versions of this model, with different sensors The whole unit is called GY-MCU90640, and it costed me around 5000 RUB (roughly $80) in December 2018. Our Chinese fellows also ship the MLX90640 chip with another microcontroller on board (STM32F103), probably for easier matrix control. The case has four outputs - two for power and two for talking to a controller device via I2C.

The B model has 55 and 37.5 degrees respectively. The more grounded A model observes the world with 110 degrees horizontally and 75 vertically. The sensor comes in two versions, the only difference being the case and the camera’s FoV. The matrix is 32x24 pixels, which isn’t a lot, but after interpolation it’s enough to notice general trends. This is a thermal camera matrix with an onboard microcontroller, made by an unknown (to me) company called Melexis. Why not? Especially since I had a Raspberry Pi lying around anyway… The result is down below. So I decided to DIY it up and build a rather exotic and useful thing - a heat visor for the home. And it just turned out a famous Chinese marketplace started to sell cheap thermal camera modules. Winter has arrived, and so I had to check the thermal insulation of my out of town residence dacha.

Raspberry pi lepton