DIY Adapter for Capacitive Scales
Supported Scales
DIY DRO adapter kit supports 3V capacitive linear scales that use iGaging 21-bit protocol, iGaging Absolute protocol and BIN6 protocol. This inludes:
- iGaging EZ-View DRO Plus
- iGaging DigiMag (and it's rebranded variants)
- iGaging Absolute DRO Plus
- Shahe 5403-xxx "Digital Liner DRO Scales with Round Display"
- Shahe 5403-xxxA/F "Digital Liner DRO Scales with Square Display"
If your scale displays look like one of the displays below (including color and markings), this adapter will work with them
Features
| Scale Inputs | 4 |
|---|---|
| Tachometer Input | Yes |
| Probe/Height Setter | Yes |
| Power Supply | 5V DC - 9V DC |
| Current Draw | Approx. 50 mA |
| Width | 2.325" |
| Length | 2.9" |
Bill of Materials
| Value | Description | Qty. | Reference |
|---|---|---|---|
| MSP430G2553 | 16-Bit mixed-signal microcontroller (pre-programmed) | 1 | U1 |
| HC-05 | Bluetooth Transceiver, Slave | 1 | HC-05 |
| LM1117T-3.3 | Voltage Regulator, 3.3V 800 mA, LDO | 1 | LM1117 |
| Capacitor, 100 uF | Cap. electrolytic, 110uF, 35V | 2 | C1, C2 |
| Capacitor, 0.1uF | Cap. ceramic, 0.1uF 50V | 9 | C3-C11 |
| Resistor, 330 Ohm | Metal film resistor, 330 Ohm, 1/4W, 5% | 2 | R2, R3 |
| Resistor 47KOhm | Metal film resistor, 47 KOhm, 1/4W, 5% | 1 | R1 |
| Diode | Schottky Diode, 20 mA 40 Volt | 2 | D1, D2 |
| LED | LED, Green 3mm, 20 mA | 2 | HB, PWR |
| Power Jack | 2.1x5.5 mm power input jack, PCB mount | 1 | Pwr |
