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ADC for use with load cell
Posted: Wed Jul 05, 2017 9:01 pm
by Globuli
Hi there!
Could I use the ESP32's ADC to read a 5kg load cell sensor such as this one:
http://www.robotshop.com/en/micro-load-cell-5-kg.html
I need a resolution of about +/- 0.5g
Would the "Ultra Low Noise Analog Pre-Amplifier" be of any help there?
Right now I'm using a HX711 24-Bit ADC with an RFduino board and was wondering if I could skip the HX711 with the ESP32.
Thank you so much helping me with the awesome ESP32
Re: ADC for use with load cell
Posted: Thu Jul 06, 2017 1:30 am
by ESP_Sprite
In theory, yes. Unfortunately, as far as I'm aware, the LNA is not documented yet, so you may have to wait until it is.
Re: ADC for use with load cell
Posted: Thu Jul 06, 2017 4:09 am
by WiFive
ESP_Sprite wrote:In theory, yes. Unfortunately, as far as I'm aware, the LNA is not documented yet, so you may have to wait until it is.
Less doom, more doc!
Re: ADC for use with load cell
Posted: Thu Jul 06, 2017 4:25 am
by ESP_Sprite
I know you jest, but you have no idea how much Doom helped to squash the bugs out of the PSRAM code, and later on the mmap code. It started as a stupid thing, but I'm really glad I started that.
Also, seems I was wrong. The LNA actually is documented, around page 448 of the technical reference manual. We do not have a driver for it yet, though.
Re: ADC for use with load cell
Posted: Thu Jul 06, 2017 7:18 am
by WiFive
Of course! I meant to imply sitting around playing it, not the porting.
Re: ADC for use with load cell
Posted: Thu Jul 06, 2017 11:43 am
by Globuli
Thank you very much for your replies
I'll give it some time then.
While we're at it: Do any of you know of an alternative to the ESP32 regarding ADC/amplifier capability? I'm only interested in BLE at the moment.
Thank you!
Re: ADC for use with load cell
Posted: Tue Feb 06, 2018 7:49 am
by Micjm97219
Hello! I'd love to be able to hook up a load cell directly to the ESP32 instead of having to use an additional ADC. Has there been any progress on this thread?