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In this case, for me, it's easier to unsolder and solder the MPU pins to 18 and 19 and move IP5209 I2C pins to 17 and 16. Thanks for your advice!

Hi everyone, I have connected GY87 to my teensy 4.1 SDA1 & SCL1 (17, 16) and I was able to see the addresses: I2C device found at Wire 0x75 // IP5209T Power Management IC I2C device found at Wire1 0x68 // BMP085 Barometer I2C device found at Wire1 0x77 // MPU6050 6 Axis Acc & Gyro but when I...

You are right, I have no idea where the 300 came from :confused: anyway thank You for the correction!

Hi Chris, thank you for your reply. I have looked at Energizer Ultimate Lithium AA and they seem reliable on low temperatures, but they can only store 300mAh, in my case pack of 4 will get me 1200mAh, not like I know what the current draw will be at the end of my project as I keep adding and...

Hi Mark, thank you so much for this info, although I aim for a TOTAL weight under 1kg / 2.20 lbs / for the whole project and this battery pack is slightly over the weight I can afford (7lbs or 3.2kg) I wonder what kind of weather balloon cargo do you send up there to use such battery? I have...

I also have another idea using PTC Heating Element - 5V up to 40°C and try to keep the thing within acceptable temperature range from the inside. Did any of you ever used one? 🤔 Thanks

Hi all, 👋 will get straight to my issue. I am trying to choose the correct type of batteries to power up Teensy 4.1 + GY91 + uBlox GPS + LoRa RF Module + 3x Micro Geared Servos + 2 Micro Geared Steppers (via DRV8833). *Please ignore the Arduino Nano on the picture and replace this with...