Hi,
I'm working on a project that I could use some expert advice with please. I'm new to designing my own circuits, but I did take both discrete and digital electronics courses in college (many years ago).
My project is using a very low power Arduino-like device to monitor a driveway vehicle sensor and send a LoRa (low power radio) signal when one is detected. Since this is my driveway, it will spend the vast majority of the time idle -- perhaps 4 vehicles a week. I'm having difficulty figuring out the best solution to power both the Arduino AND the sensor:
The Arduino is this. It's designed to use 3.7vdc batteries. Idle current will be about 20uA, and maximum current (while transmitting) about 200mA.
The sensor is two of these. 8-30vdc. Idle current is 30-70 uA, maximum current 40-60 mA.
I'd like to get about a year of standby time out of two 3.7v 2600mAh batteries in parallel, which puts my standby energy budget at about 400 uA (I think).
Also, although I can solder, I can't work with SMT components.
I would appreciate any thoughts or advice people have to offer me.
Thanks!
Brian
I'm working on a project that I could use some expert advice with please. I'm new to designing my own circuits, but I did take both discrete and digital electronics courses in college (many years ago).
My project is using a very low power Arduino-like device to monitor a driveway vehicle sensor and send a LoRa (low power radio) signal when one is detected. Since this is my driveway, it will spend the vast majority of the time idle -- perhaps 4 vehicles a week. I'm having difficulty figuring out the best solution to power both the Arduino AND the sensor:
The Arduino is this. It's designed to use 3.7vdc batteries. Idle current will be about 20uA, and maximum current (while transmitting) about 200mA.
The sensor is two of these. 8-30vdc. Idle current is 30-70 uA, maximum current 40-60 mA.
I'd like to get about a year of standby time out of two 3.7v 2600mAh batteries in parallel, which puts my standby energy budget at about 400 uA (I think).
Also, although I can solder, I can't work with SMT components.
I would appreciate any thoughts or advice people have to offer me.
Thanks!
Brian