Wireless Testing

[zerox1212]

@RoaddogLabs

I'm going to order one of these (https://www.adafruit.com/product/3406) and wire it to the Chenbo LC amp. If you have any ideas hardware-wise to make this arrangement cheaper please post.

Goal is to make a compact "dongle" that simply has a small connector for an adapter cable. The adapter cable would go from the dongle to existing scale pad (for example, looks like Longacre scales have a round 4 wire quick connect).

[RoaddogLabs]

This isn't going to be able to scale to use something other than an SoC type solution right now. Pretty much the same boat as with the integrated boards.

Sparkfun's is a bit cheaper https://www.sparkfun.com/products/13990

Another similar route would be using a Pi Zero-W with the advantage of using that toolchain for the current software/firmware. The Pi-Zero is $10. You could still use the tools you are using now.

The Nordic based boards are Arduino so you'd have to port your code to sketches.

Either solution is going to require batteries as well.

[zerox1212]

I figured as much. I grabbed the Adafruit board for the moment because it has a battery charging circuit built in. I'll grab a Pi Zero-W as well.

There are several HX711 arduino libraries, so it should not be hard to use an arduino based firmware.

[RoaddogLabs]

The primary difference between the Nordic (Sparkfun/Adafruit) and TI (Robotshop) is the chip providing the compute horsepower. The Nordic integrates a more robust part and that implementation of the TI still uses an older 8 bit ATmega. The newer TI designs are closer to what Nordic has. If you are looking at TI solutions the CC26xx series would be the most current compared to a nRF52xx series. The Robotshop board is older (CC25xx) and for most not as desirable. That Adafruit board is a good choice. At this point I wouldn't bother with the Zero for this if you're willing to change environments and forge ahead with the Nordic. That's what all the cool kids are using...