msp430 lcd display made in china

The utility model discloses a minisquare package (MSP) 430 single chip-based digital display voltage meter, which comprises an MSP430 single chip (1) with a power supply module (3), and a liquid crystal display (LCD) display module (4), a communication module (5), a memory module (9) and a keystroke input module (6), which are connected with the MSP430 single chip (1), wherein an ADC analog-digital conversion module (7) inside the MSP430 single chip (1) is connected with a simulation front-end signal governing circuit module (2). The ADC analog-digital conversion module, a central digital processing and control unit, an LCD display drive, a real-time clock (RTC) module and a communication interface module are integrated into a whole, so the peripheral circuit wiring design and the circuit connection are simple, the size can be reduced, the production cost can be further reduced, and the measuring precision can also be improved. Due to the adoption of the MSP430 single chip-based digital display voltage meter, the economic efficiency can be improved and the production cost of the manufacturer can be reduced, while the reliability and the stability can be guaranteed.

The utility model relates to a kind of equipment of measuring voltage, particularly a kind of digital display voltage table based on the MSP430 single-chip microcomputer.

Electronic type digital display voltage table is compared traditional mechanical formula voltage table and is had advantages such as intuitive display, degree of accuracy height, low in energy consumption, good stability.But existing electronic type voltage table adopts dsp chip (also claiming digital signal processor) usually or adopts a plurality of MCU microcontrollers to carry out the measurement of voltage, causes finished-product volume bigger, and it is loaded down with trivial details to connect up, and cost is higher.

The purpose of this utility model is, a kind of digital display voltage table based on the MSP430 single-chip microcomputer is provided.The utlity model has volume less, the wiring simple and lower-cost characteristics.

The technical solution of the utility model: based on the digital display voltage table of MSP430 single-chip microcomputer, it is characterized in that: comprise MSP430 single-chip microcomputer that is provided with power module and LCD display module, communication module, memory module, the keyboard input module that is connected with the MSP430 single-chip microcomputer, the ADC analog-to-digital conversion module in the MSP430 single-chip microcomputer is connected with AFE (analog front end) signal conditioning circuit module.

In the aforesaid digital display voltage table based on the MSP430 single-chip microcomputer, described MSP430 single-chip microcomputer is connected with the LCD display module, is being connected of LCD driver module and LCD display module in the MSP430 single-chip microcomputer.

In the aforesaid digital display voltage table based on the MSP430 single-chip microcomputer, described communication module is the RS485 communication module.

In the aforesaid digital display voltage table based on the MSP430 single-chip microcomputer, described MSP430 single-chip microcomputer also is connected with passive pulse output module.

In the aforesaid digital display voltage table based on the MSP430 single-chip microcomputer, described MSP430 single-chip microcomputer is MSP430F5438 single-chip microcomputer or MSP430F5418 single-chip microcomputer.

Compared with prior art, the utility model utilizes the MSP430 single-chip microcomputer ADC analog-to-digital conversion module, central numeral processing and control element (PCE), LCD display driver, RTC clock module and communication interface module to be integrated in one, it is simple to make peripheral circuit wires design and circuit connect, thereby reduced volume, production cost is further reduced, but also has improved measuring accuracy.The utility model has also improved economy greatly when having guaranteed reliability and stability, reduce the production cost of producer.

Being labeled as in the accompanying drawing: 1-MSP430 single-chip microcomputer, 2-AFE (analog front end) signal conditioning circuit module, 3-power module, 4-LCD display module, the 5-communication module, 6-keyboard input module, 7-ADC analog-to-digital conversion module, the 8-LCD driver module, 9-memory module, the passive pulse output module of 10-.

Embodiment.Digital display voltage table based on the MSP430 single-chip microcomputer, constitute as shown in Figure 1, comprise MSP430 single-chip microcomputer 1 that is provided with power module 3 and LCD display module 4, communication module 5, memory module 9, the keyboard input module 6 that is connected with MSP430 single-chip microcomputer 1, the ADC analog-to-digital conversion module 7 in the MSP430 single-chip microcomputer 1 is connected with AFE (analog front end) signal conditioning circuit module 2; The supply voltage of described power module 3 is 3V.

Described MSP430 single-chip microcomputer 1 is connected with LCD display module 4, is being connected of LCD driver module 8 and LCD display module 4 in the MSP430 single-chip microcomputer 1.

ADC (Analog to Digital Converter) D/A converter module, LCD driver module, timer module, memory module, central data processing and control element (PCE), I/O are interrupted MSP430 single-chip microcomputer in the utility model and clock module is integrated in one.Import the ADC analog-to-digital conversion module after measuring electric signal process AFE (analog front end) signal conditioning circuit module, the ADC analog-to-digital conversion module links to each other with the central data processing and control element (PCE), clock module in the single-chip microcomputer provides the stable clock source, and the central data processing and control element (PCE) also links to each other with timer, storer and LCD driver module.Keyboard input module interrupts input central data processing and control element (PCE) by I/O.The central data processing and control element (PCE) by the RS485 communication module with functions such as the communication exchange that realizes data and intelligent networkings.Electrical energy pulse output interface in the MSP430 single-chip microcomputer links to each other with passive pulse output module, has realized the passive pulse output of electric energy.

The utility model in use, timer provides regularly look-at-me, the ADC analog-to-digital conversion module carries out signal sampling, by the central data processing and control element (PCE) signal of gathering is calculated and handles again, and deliver to the LCD display module, the time of carrying out data processing is shorter, and the duration is greatly about μ s level.Single-chip microcomputer continued to enter low-power consumption mode after data processing finished, and waited for the next sampling period.

1. based on the digital display voltage table of MSP430 single-chip microcomputer, it is characterized in that: comprise MSP430 single-chip microcomputer (1) that is provided with power module (3) and LCD display module (4), communication module (5), memory module (9), the keyboard input module (6) that is connected with MSP430 single-chip microcomputer (1), the ADC analog-to-digital conversion module (7) in the MSP430 single-chip microcomputer (1) is connected with AFE (analog front end) signal conditioning circuit module (2).

2. the digital display voltage table based on the MSP430 single-chip microcomputer according to claim 1 is characterized in that: the supply voltage of described power module (3) is 3V.

3. the digital display voltage table based on the MSP430 single-chip microcomputer according to claim 1, it is characterized in that: described MSP430 single-chip microcomputer (1) is connected with LCD display module (4), is being connected of LCD driver module (8) and LCD display module (4) in the MSP430 single-chip microcomputer (1).

4. the digital display voltage table based on the MSP430 single-chip microcomputer according to claim 1 is characterized in that: described communication module (5) is the RS485 communication module.

5. the digital display voltage table based on the MSP430 single-chip microcomputer according to claim 1 is characterized in that: described MSP430 single-chip microcomputer (1) also is connected with passive pulse output module (10).

6. according to the described digital display voltage table based on the MSP430 single-chip microcomputer of the arbitrary claim of claim 1-5, it is characterized in that: described MSP430 single-chip microcomputer (1) is sheet machine or MSP430F5418 single-chip microcomputer.

Our design and development ecosystem can help simplify your design process.  Explore design options and find resources for MSP430™ microcontrollers (MCUs) to help make it easier for you to get to market.

Ready to find the right device for your application? We make it easy to explore your options and start your development journey. Use our product search to identify the right MSP430 microcontroller for you.

Using cloud resources, you don"t need to purchase hardware, or even download software to verify if you have the right device. Our MSP430 training academy provides a starting point to learn about our MSP430 microcontrollers portfolio and learn more through our test code examples.

Start evaluating our MSP430 MCU portfolio by leveraging a modular ecosystem that gives you flexibility to evaluate the MCUs, using the LaunchPad™ development kits, evaluation modules (EVM), and BoosterPack™ plug-in modules. The following hardware development kits are the most popular to start evaluating your design with.

The MSP-EXP430FR6989 is a LaunchPad™ development kit that has 128 kB of FRAM memory, 12-bit ADC, 320-segment LCD controller and a dual AFE to help you get started with development.

The EVM430-FR6047 is an EVM that helps you develop ultrasonic water metering solutions with direct interface to transducers ranging from 150 KHz to 2.5 MHz, display measurement parameters with an on-board LCD and connect to RF communication modules.

MSP430 BoosterPack plug-in modules can be paired with LaunchPad development kits to provide additional features and functionality including sensing capabilities, LCDs and battery packs.

Provides various analog and digital inputs/outputs at your disposal including an analog joystick, environmental and motion sensors, RGB LED, microphone, buzzer, color LCD display and more.

The MSP430Ware software is a collection of design resources for developing with MSP430 MCUs including a wide selection of highly abstracted software libraries.  The software is available as a component of Code Composer Studio™ IDE desktop and cloud versions, or as a standalone package.

The GUI composer helps you easily create custom HTML GUIs that can interact with the programs running on your target device. A wide variety of different web components are provided that allow you to control the target device and display data sent from the target device.

The CapTIvate™ MCU design center GUI is a one-stop resource for everything related to CapTIvate capacitive sensing technology integrated on MSP430 microcontrollers. It includes tools, documentation and software examples that can simplify and accelerate capacitive touch designs.

A training series which acts as a great starting point for all developers to learn about the MSP430 MCU Platform which provides affordable solutions for all applications.

A collection of design resources for developing with MSP430 MCUs including a wide selection of highly abstracted software libraries.  The software is available as a component of Code Composer Studio™ IDE desktop and cloud versions, or as a standalone package.

Tools, documentation and software examples to simplify and accelerate capacitive touch designs using MSP430 CapTIvate MCUs. Drag and drop capacitive buttons, sliders, wheels and proximity sensors to the workspace and use the GUI to generate code, configure and tune in real time.

[Nav] is working on a scratch-built wristwatch. Although it is based on an MSP430 microcontroller, it’s not the ready-to-hack ezCronos that you might be thinking of. Instead, [Nav] started with a different TI development tool that we’ve looked at before, the ez430-F2013.

The breakout board for the F2013 is small enough to meet his needs, but still provides easy soldering with 0.1″ vias that break out each pin. To make sure the timepiece is accurate he added a 32.768 kHz clock crystal. A small, square, LCD screen acts as the face of the watch, but we didn’t find specific part information for the display.

The design of the Scorpion consists of a 3D printed enclosure, with one forked end containing some alligator clip leads, and a standard barrel jack on the other. In the middle is a character display showing the input and output voltage, and a simple rotary encoder for user interaction. The circuit for the Scorpion 3.0 consists mostly of a cheap, low-power MSP430 microcontroller managing the display, encoder, and a buck converter.

Designing something for off-the-grid usage means a few engineering challenges, and being in Paupa New Guinea, there are a few environmental considerations as well. [marius] is varnishing his 3D prints. No, it’s not going to be IP68 rated, but it helps. Making the Scorpion cheap is also a big consideration, most probably resulting in the choice of the MSP430.

An increasing number of readers have been asking me to add support for other encoders to my Digital Readout application, especially the “standard” Chinese scales and cheap calipers. Although I’ve been experimenting with the idea for some time but never got around to getting it done. Last weekend, while working on step-by-step build instructions for the MSP430 Launchpad DRO controller, I realized that I was much closer to the solution than I previously realized. The MSP430G2553 microcontroller that ships with the newer version of the Launchpad kit is a very capable chip that should be able to read three or four different scales with no problems. After digging through my and my father’s garages, and a trip to Harbor Freight I was able to round up six different-looking calipers and a BG Micro “Digital Indicator”, so I was ready to start experimenting.

Almost all digital calipers and scales use an incremental capacitive transducer to determine their position. In most cases the main scale covers a circuit board that has a special pattern etched on it; inside the main body there is another circuit board with a set of etched strips. By rapidly measuring the capacitance between each strip and the frame PCB, the controller inside the caliper can precisely measure its movement. By knowing how far the transducer has moved from the reference point the scale can then calculate its precise position and display it to the user or send over the wire [to the Launchpad in our case]. There are differences in how the position is encoded and sent over the wire but almost universally these scales use a variant of a synchronous serial protocol. In case iGaging Remote Digital Readout scales the display unit provides the clock; all of the others that I had a chance to test provide their own clock.

The first order of business was to connect the scales to the microcontroller and make sure that it can read the signal. To run at 16MHz, MSP430 Launchpad requires 3.3V power supply. The datasheet states that input threshold voltage min/max is 1.35V and 2.25V respectively at 3V supply. In other words the 1.5V signal coming from the calipers will likely not read as “high”. I first tried powering one of the calipers from 2.5V supply but it promptly let the magic smoke out and died. This was only a minor setback, though, since a voltage level shifter is a basic, easy to build circuit. The idea is to connect the caliper output through a resistor to a NPN transistor as shown in the schematic. This shift the voltage level to 3.3V but will invert the input as well, which can be easily handled in the firmware.

Any resistor value between about 200 Ohm and a 1/2 KOhm should work. Similarly, any NPN transistor would work as well, since MSP430 maximum input current draw is on the order of 2mA. Please keep in mind that some transistors (such as 3904, for example) have the pins reversed so make sure to connect them in the correct direction. Alternatively the whole board can be replaced with a single “Octal Line Driver” IC or two Op Amps.

Second the scales have to be connected to the adapter board. Initially I tried using the proprietary cables [that came with the BG Micro Digital Indicators] but the connection was horribly unreliable on all but Harbor Freight caliper. After a few hours of wiggling the cable I decided to simply solder four vires to the pads and call it good. To access the pads the calipers had to be taken apart but it proved to be fairly easy. There are four bolts hiding under the label on the backside that can be undone using a miniature Philips screwdriver. Once the front sub-assembly is off, there are four more tiny screws inside, holding the main board to the case. The buttons and LCD display will do their best to scatter around so be prepared to catch them. To keep things consistent with the connections used with iGaging scales in the previous versions of the controller I used a sacrificial USB cable. This way all of my scales use Red-White-Green-Black sequence for Vcc, Data, Clock and Ground respectively.

Port 2 can be used to provide the six data signals required to control the LCD.   Note how the LCD is connected to the breadboard and that wires can be connected to the pins as shown in figure 1. There is a four bit interface for the data (D4-D7), a RS (select command versus text) and an enable (E).   Figure 2 shows the other required connections as well. The datasheet for the LCD can be found here GDM1602K-Extended.pdf.  The commands are correct but the electrical specifications may vary between LCDs so make sure you have the correct datasheet for your specific LCD (3.3V versus 5.0V for instance)

Specific to this lab and the corresponding lcd_lib files we will setup the LCD to use all six available pins in Port 2 to write directly to the 16 x 2 LCD in 4-bit operation using only the most significant data nibble.

This 3.2 inch TFT LCD Display module has a resolution of 320 x 240 pixels. The module includes Resistive Touch Screen Panel. SSD1289 is used to control LCD and the touch panel is controlled by XPT2046.The module can be interfaced with any MCU like STM32, AVR and 8051 using the 40 pins breakout header that Include touch panel interface. The module can be driven in 16bit data interface mode.

This LCD Module can be directly plugged into Arduino board using "TFT LCD Adapter Shield for Arduino" shield. The LCD on this module has a has wide viewing angle and a decent contrast ratio.