Category Archives: sensor

Freescale’s sensors breakout boards

A few more PCBs, this time for Freescale’s sensors. MMA8541Q The MMA8451Q is a  low-power, three-axis accelerometer with 14 bits of resolution. It communicates over I2C,  has built in tilt/orientation detection and also tap detection. To make the PCB I downloaded the … Continue reading

Posted in diy, Electronics, English, FXOS8700CQ, MMA8541Q, MPL3115A2, pcb, sensor | 6 Comments

INA219 Current Sensor DIY Breakout board

Another small board, this time for a INA219. The INA219 is a high-side current shunt and power monitor with an I2C interface. For testing I used Rei VILO library with a MSP430G2553 and Energia, and I measured the power consumption for this simple circuit: … Continue reading

Posted in diy, Electronics, English, pcb, sensor | Tagged , , , , | 2 Comments

SHT21S DIY Breakout board

I made a little board for a SHT21 humidity and temperature sensor from Sensirion.  There are several versions with I2C interface, PWM output and SMD/analog interface. I’ve got the one with Sigma Delta Modulation (SMD) output,  is a bit-stream of pulses; the … Continue reading

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MSP430 and a HC-SR04 Ultrasonic Ranging Module

A while back I bought an HC-SR04. It sat in a box until yesterday when I tried to use it with an MSP430G2553 but unfortunately it wasn’t working. I used Energia to program the Launchpad but I wasn’t getting any response from … Continue reading

Posted in diy, Electronics, MSP430, sensor | Tagged , , , | 9 Comments