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Found 22 results

  1. Hello everyone, I am just a beginner in using MSP430, I want to know how to design a circuit of motion detection system. I have the ports which LCD display should be connected to , So I want to check if they are correct, since all of this is new to me. for LCD display port connection. connect RS to P2.5 connect RW to P2.6 connect E to P2.4 connect D0-D3 to NC connect D4 to P2.0 connect D5 to P2.1 connect D6 to P2.2 connect D7 to P2.3 are the above correct? where should I connect PIR sensor? please, I nee
  2. Hello, I am trying to port Sparkfun's library to get the apds-9960 Gesture Sensor working on my Tiva C 1294 board. I set up the library like you normally would with ardunio while changing the interrupt pin and uploaded the code to my board with no issues. The only problem is when I go to serial monitor I get nothing printed to screen. Are there any other steps I need to take in order to convert this code to work on my Tiva board? I also tried moving to code composer studio but I cant find many clean tutorials on how to use it. I also have a MSP432 that I might try to get his working on if
  3. So I'm working on a fingerprint scanner project with this repo written for arduino for the scanner I'm using. I am trying to make it work with an MSP430G2553 instead of the Arduino Uno. When I try using this library in Energia, it can't find the scanner despite being wired on the launchpad the same way that it is wired on the Arduino (External 5V source, Arduino pin 2 --> MSP430 pin 1.1, Arduino pin 3 --> MSP430 pin 1.2). The code compiles and the serial monitor outputs the test looking for the scanner, but it has yet to be able to find it. If anyone could give me any help with this, it
  4. This is a start to a bigger project and will be expanded on. Temperurature sensor for Mash -- MSP430, LM75B, possible other sensors, thermal couple. (working on code and proof of concept) Temperurature sensor for fermentation -- TBD Specific gravity sensor -- TBD User Interface -- TBD automation of pumps gas lines and equipment -- Requirements: Food safe, easily cleaned. probes and sensors sealed...... What I want is mash temp monitoring and logging to help me improve my brew days and procedure and maybe add a heater to keep
  5. Hi, At a previous project I turn on and off power to ST LIS3DH Accelerometer using a MOSFET Circuitry. This is so to make sure the I2C Sensor is not consuming current when not in use. A colleague of mine designed to power a ST LSM303AGR from one of the MCU IO Pins. The MCU IO voltage is enough to power the ST LSM303AGR, so, should work. But, powering I2C Sensor from MCU IO Pins is not the usual way and new to me. Do you think that powering the ST LSM303AGR from one of the MCU IO Pin is okay or is not recommended? Regards, Markel
  6. There is code available to implement I2C communication between the MSP430 and the HDC2010 temperature-humidity sensor, but it's a bit like an onion -- you have to peel away layer after layer in various libraries to drill down into what is happening at the register level. I decided to write some transparent demo code for this sensor that is self-contained: everything related to the I2C interface is in a single C program. It has been successfully tested with the F5529 Launchpad. This is a simple MCU polling operation that periodically makes a T-H measurement using the on-demand mode of the se
  7. Hello, I would like to interface USB push notification board (bought recently) https://store.ncd.io/product/4-channel-push-notification-contact-closure-input-over-usb/ with MSP430 and interface multi sensors in such a way that whenever the sensor range is disrupted then actuator assigned to sensor will be switch on and this message will be sent on smart phones, I am new to this kid work and also if this thing will successful then I would like to make the actuators like rely board function with these king push notification any suggestion regarding making these kind solution through embedded s
  8. Hi, When doing offset calibration for pH sensor in Arduino we bring pH 7 to 2.5V as Arduino analog output is 5V. Does that mean when the same is done with msp430g2553 the voltage be adjusted to 1.5V as msp430g2553 analog pins output around 3V only? When I tried adjusting the pot I could only bring it to a minimum of 2.5V with msp430. Does anyone know why? Thanks.
  9. I have been trying to use a simple I2C sensor (LM75) with a MSP430FR5994. I find there are two pin maps. One at Energia (http://energia.nu/wordpress/wp-content/uploads/2016/11/Capture-2016-11-30-à-15.10.44.png) and one at TI directly (http://www.ti.com/lit/ml/slau677/slau677.pdf) on page 2. I have tried using I2C (1) as indicated at in the TI reference, and I have tried I2C (2) as indiicated in the Energia reference. neither one work. I can use an Arduino to access the sensor so I have some hope that this might work. What pins do I need to use to use I2C? Is there a library call to specify whi
  10. Hi all i'm programming by MSP430fr5739 a temperature and humidity reading by the DHT11 sensor. ?The wire are correct, and so the problem is'nt in the link, it is in the code. This is my code, usind the dht11 library, find on internet. ?The main problem is that i don't know how to read the value of T and H, and maybe there is some problems in the reading (probably in the interrupt) ?Thanks for the advice. ?MAIN CODE: #include <msp430.h> #include <DHT11_LIB.h> unsigned char RH_byte1; unsigned char RH_byte2; unsigned char T_byte1; unsigned char T_byte2; unsigned char checksum;
  11. - INTRODUCTION Hi everybody, I want to share a library for controlling a 4-pins PING sensor (HC-SR04 ICStation) basically, although you can also control the 3-pins PING))) sensor conventional of Parallax (URL). This library is a modification of the Caleb Zulawski's library for PING))) sensors. I made basic improvements in calculations, I added a function to calculate the distance in millimeters and added the option to change the "input trigger signal" [10uS for HC-SR04 and 5uS for PING)))] - CHANGE LOG v2.1 (26/08/2014) * Fixed calculations of distance in inches. v2.0 (25/08/20
  12. Hi,guys!This is my first time here.This forum seems like a very active MSP430 community.Glad to find so many MSP430 lovers. I would like to share a project I did a month ago,which is about evaluating TI's Senshub board with MSP430F5529.Well this board has lots of sensors on it,such as BMP180,MPU9150,TMP006,SHT21,ISL29023.On TI
  13. These sensors can be obtained on Amazon/Ebay, are fairly cheap, and work by converting current from photodiodes into a square wave output. Don't expect much from them as they have a lot of limitations but can detect colors and match them to some degree. I noticed an old posting on 43oh about this sensor but it wasn't apparent they were successful so I gave it a try. The photo below shows the sensor and examples from the demonstration sketch I wrote in Energia V16 using the MSP432P401R LaunchPad. I tried using pulseIn() and got it working quickly on the MSP432. I tried the same cod
  14. I made this sensor a while back as a prototype and put it outside earlier in the year and it still seems to be working OK. It has been a dry spring and summer here in Seattle though and it really hasn't had much of a workout. It was my first project with the MSP430G2. It is pretty simple. The funnel catches rain from a known area where it falls into two "buckets" that tip back and forth. Adjustment screws are used to calibrate the bucket volume. A hall sensor detects each tip of known volume and sends a signal to the microcontroller which timestamps and stores/transmits the data.
  15. Hello, I bought an Adafruit TSL2591* shield but unfortunately it looks like there's no lib for MSP430s. There's code for Arduino and some posts about the TSL2561. Unfortunately I don't have any experience with I2C and hope/wonder if someone is interested to get it running on the MSP430s? That's a really nice sensor. * :
  16. Hi, I'm trying to read analog values from a SHARP IR sensor GP2Y0A41SK0F using the MSP430F5529 launchpad. There was not any error when I verified and uploaded the codes in Energia. However, when I clicked on the Serial Monitor, nothing showed up. But when I chose the MSP430G2452 from the "Tools" menu, the monitor successfully showed the analog values. I connect Vcc (red wire) to 5 V pin, the ground (black wire) to GND pin, and the analog output (white wire) to P6.4 pin/A4 pin. The same thing also happened to the MSP430G2553 launchpad. It only works when MSP430G2452 is selected.
  17. I decided to build an air humidity alarm so I know when to air (you can also attach a piezo buzzer, which is more recognizable in some situations). I found/use this lib. Chip: MSP430G2452 (this I had left, I think it's overkill for this task) -- Problem solved. Thanks to all who helped. To solve the problem I decided to comment out if (millis() < _lastMillis) { return _lastResult; // return last correct measurement } _lastMillis = millis() + 1; in DHT22_430.cpp because I think the millis() doesn't run below LPM1. I also don't need the millis() because I already wait in interru
  18. Hello, my name is Rolando Correa. I am a Junior student at John Brown University located in Siloam Springs, Arkansas. This semester I have been working in a project called "The Pool Boy" for my Embedded Systems class. Project Objective The purpose of this project was to design and assemble a pool skimming system. The final product, the Pool Boy, can autonomously navigate and filter the surface of an 800 square foot pool in under 60 minutes. It filters the surface of the pool via water intake system driven by high efficiency electrical motors. The Pool Boy follows a random path based o
  19. Hi everybody, I have ordered some lm75a sensors from eBay and after careful SMD soldering on a SOIC to DIP converter, I am trying to get these sensors to work with the Launchpad and Energia. Somehow this is more difficult than expected (especially after connecting a RTC chip and a light sensor with ease). Has anyone tried to get these sensors to work with the Launchpad? What kind of pullups are needed? Does anyone have example code? And finally I tried this on the new release of Energia, has anything changed with the I2C code? Kind regards, Eelco Rouw
  20. Hi, My project is an home automation network. The first aim was to regulate the two heaters I got in my business place. So I made a first PoC with an arduino nano and a rapsberry. The nano sends to the RPi temperature from one side of the room and the a RPI log it along with it's own temperature measurement (the 2 based on DS18B20). Communications between the two is done by 2 RF24 modules, the Raspberry got one 433 transmitter to send order to 2 Chacon switch plug onto which the heaters are connected. On the raspberry I got a Python module logging the temperature in files and a web site in p
  21. I am looking for a cheap lidar sensor for my robotic vision. I have not been able to find any that are relatively inexpensive. Does anyone have any suggestions for a dealer? I have heard that they are much more accurate than other similar sensors. Any thoughts on this?
  22. This is just the start of my project. Ultra sonic distance sensor, based on paralax ping sensor or other ultra sonic distance sensors . 24Khz and 40Khz ultra sonic transducer. Basic operation: Send Pulse--> wait for echo --> read time between pulse and echo --> send distance --> start over. completed part of projct at the time of posting. Output amplifier--completed PWM output (24Khz) --completed Parts that need to be completed Input amplifier/opamp -- waiting for jfet opamp, considering a 741 just for testing purposes pulse length code -- was workin
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