Hi!
I am struggling to find a data logger that works for my needs and am wondering if it is easier to build one, or if someone might have any suggestions for where to look.
The data logger needs internal clock and to be able to pass a supply voltage to connected hardware (3.3 V DC to 5.0). It needs at least one analog input but having 1 or 2 others is a bonus. And it needs at least two digital (serial) inputs with UART (3.0V levels, max. 3.3 V), 19200 baud, 8 data bit, 1 stop bit, no parity, no handshake.
I'd appreciate any suggestions! I am very new to this and am still learning what to look for.
9 February 2024 6:02pm
I believe an Arduino MKR ZERO would meet all those requirements. May I ask what kind of project is it for? Some more context would help with suggestions.
Arduino MKR ZERO (I2S bus & SD for sound, music & digital audio data)
The MKR ZERO brings you the power of a Zero in the smaller format established by the MKR form factor. The MKR ZERO board acts as a great educational tool for learning about 32-bit application development. It has an on-board SD connector with dedicated SPI interfaces (SPI1) that allows you to play with MUSIC files with no extra hardware! The board is powered by Atmel’s SAMD21 MCU, which features a 32-bit ARM® Cortex® M0+ core. Warning: Unlike most Arduino & Genuino boards, the MKRZero runs at 3.3V. The maximum voltage that the I/O pins can tolerate is 3.3V. Applying voltages higher than 3.3V to any I/O pin could damage the board. The board contains everything needed to support the microcontroller; simply connect it to a computer with a micro-USB cable or power it by a LiPo battery. The battery voltage can also be monitored since a connection between the battery and the analog converter of the board exists. You can find here your board warranty informations. Getting Started In the Getting Started section, you can find all the information you need to configure your board, use the Arduino Software (IDE), and start to tinker with coding and electronics. Need Help? On the Software on the Arduino Forum On Projects on the Arduino Forum On the Product itself through our Customer Support
Arduino Online Shop25 February 2024 10:04pm
Hi Andrea, for the real time clock, you may want to add a GPS module to the setup and synchronize the internal clock with the received GPS time. Regarding the other requirements an Arduino or Raspberry will likely do the job.
26 February 2024 10:20am
I think it's important to state whether you have a lot of power available or not. If not, it would rule out the Pi. If you do, then you have a lot of flexibility but would have to add an external chip for the ADC.
So, would the use case have sufficient power to power a Raspberry Pi continously for the data logging period?
Brett Muir