massa – Model Rail Electronics https://modelrailelectronics.com/en Sun, 01 Mar 2026 19:59:28 +0000 en-GB hourly 1 https://wordpress.org/?v=7.1 https://i0.wp.com/modelrailelectronics.com/wp-content/uploads/2025/12/cropped-nano.png?fit=32%2C32&ssl=1 massa – Model Rail Electronics https://modelrailelectronics.com/en 32 32 221730328 DS202 – I2C mass detection module https://modelrailelectronics.com/en/shop/ds202/ https://modelrailelectronics.com/en/shop/ds202/#respond Sun, 01 Mar 2026 16:18:36 +0000 https://modelrailelectronics.com/?post_type=product&p=1263 Version 1.2

The DS202 – I2C mass detection module is an 8 channel mass detection module. It has the same pinout as the PCA9685 PWM module and can therefore be connected in the same way. For connecting this module to Loconet, the DS104 – Lnet I2C interface can be used.

The module has one common pin labeled C and each detection circuit has it’s own detection pin. It detects a connection between each detection pin and the common pin so it can therefore be used with reed contacts or switches.

The DS202 – I2C mass detection module is sold as do it yourself project containing PCB and all components.

Programming info:
I2C address configurable using jumpers on J1 (A2-A1-A0):
0-0-0: 0x20
0-0-1: 0x21
0-1-0: 0x22
0-1-1: 0x23
1-0-0: 0x24
1-0-1: 0x25
1-1-0: 0x26
1-1-1: 0x27

Pinlayout on I2C IC:
Channel 1 = P0
Channel 2 = P1
Channel 3 = P2
Channel 4 = P3
Channel 5 = P4
Channel 6 = P5
Channel 7 = P6
Channel 8 = P7

Built time for an experienced tinkerer: 20 ~ 30 minutes.

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