Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Model Number	CS1237/CS1238
Resolution	24-Bit
Reference Chip	Onboard TL431
Interface Type	SPI / 2-Wire
Supply Voltage	2.7V to 5.5V
Operating Temperature	-40°C to +85°C
Application	Electronic Weighing Scales
PCB Dimensions	25mm x 18mm
Input Channels	2 Differential Inputs
Package Type	Module with Pin Headers

6 reviews

Anonymous

Mar 29, 2026

Rating: 5/5

Perfect for DIY Scale Projects

This module worked flawlessly with my Arduino project. The 24-bit resolution provides excellent stability for small weight measurements. The onboard TL431 reference chip ensures consistent readings without needing external components.

Anonymous

Mar 29, 2026

Rating: 4/5

Good value, clear documentation needed

The hardware quality is solid and the price is unbeatable. However, beginners might struggle slightly as the datasheet could be more detailed regarding the SPI timing diagrams. Once configured, it performs very well.

Anonymous

Mar 28, 2026

Rating: 5/5

Reliable for industrial prototyping

We used several of these for a prototype weighing station. They handled the noise environment better than expected. The differential input helps reject common-mode noise effectively.

Anonymous

Mar 28, 2026

Rating: 4/5

Solid performance, minor heating

The ADC conversion speed is impressive. I noticed the chip gets slightly warm after prolonged use at 5V, but it stays within safe operating limits and does not affect accuracy.

Anonymous

Mar 05, 2026

Rating: 5/5

Excellent replacement part

Used this to repair a broken kitchen scale circuit board. The pinout matches the original design perfectly. Calibration was straightforward using the internal gain settings.

Anonymous

Mar 01, 2026

Rating: 5/5

Great for university projects

Bought this for my final year project on smart logistics. It connects easily to Raspberry Pi and Python libraries are available online. Very happy with the precision.

5 FAQ

Q: Does this module support 3.3V logic levels directly?

A: Yes, the CS1237/1238 operates from 2.7V to 5.5V, making it fully compatible with both 3.3V and 5V microcontrollers without level shifters.

Q: How do I calibrate the sensor after installation?

A: Calibration involves reading the raw value with no load (tare) and then with a known standard weight. You can then calculate the scaling factor in your software code.

Q: Is there a library available for ESP32?

A: While we do not provide official libraries, there are several open-source community drivers available on GitHub that support ESP32, Arduino, and STM32 platforms.

Q: What is the maximum sampling rate for this ADC?

A: The typical output data rate is up to 10Hz to 80Hz depending on the gain setting and filter configuration selected in the control register.

Q: Can I connect two load cells to this single module?

A: The module features two differential input channels, so yes, you can connect two separate load cells or use a full-bridge configuration on one channel.

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