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| Mixed Scale DRO Controller with MSP430 Launchap |
Description
This DRO controller extends upon the basic version of MSP430 Launchpad-based DRO controller by adding support for standard "Chinese" scales and inexpensive calipers. The firmware can auto-detect and decode the iGaging protocol, 24x2-bit Sylvac protocol and the BIN6 protocol used by the cheap Chinese calipers. It requires only about 16 additional parts and can be built for under $40.
Specifications
- Microcontroller
- MSP430G2553
- Clock Frequency
- 16 MHz
- Supported Scale Format
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- 21 Bit (Shahe/iGaging Remote DRO and AccuRemote)
- Sylvac (AKA 2x24 bit) Chinese Scales
- BIN6 Chinese calipers
- Supported Axes
- 4
- Tachometer Support
- Yes (directional)
- Scale Refresh Rate
- Up to 100Hz (depending on scale)
- Tachometer Refresh Rate
- 1 Hz
- Position Update Rate
- 10Hz
- UART Speed
- 9600 Baud
Parts List
- TI MSP430 Value Line Launchpad kit
- Bluetooth Transceiver Module
- 3x4 (1200 hole) Prototype Stripboard
- Two LM339 Comparators
- Four 20 Kohm resistors
- Four 10 Kohm resistors
- Four 5 Kohm resistors
- Three 0.1 uF capacitors (optional)
- One 1000 uF electrolytic capacitor (optional)
Resources
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Build Instructions
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General Information
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Troubleshooting