The HMC6343 is a fully integrated high end electronic compass module that can compute and give you a heading direction that’s accurate within a couple degrees. It is tilt compensated and is calibrated to handle magnetic distortions. This breakout board allows for easy use of the HMC6343. All that is required is power and I2C connections to a microcontroller so that the module can receive commands and send data back to the user.
The IC combines 3-axis magneto-resistive sensors and 3-axis MEMS accelerometers, analog and digital support circuits, a microprocessor and algorithms in firmware required for heading computation. The HMC6343 Breakout needs to be supplied with 3.3V @ 4.5mA and can measure and compute a heading direction every 200ms (5Hz). This board for the HMC6343 breaks out the all the pins you’ll need to send commands and collect data from the electronic compass including GND, 3.3V, SDA, and SCL.
This skill defines how difficult the soldering is on a particular product. It might be a couple simple solder joints, or require special reflow tools.
Skill Level: Noob - Some basic soldering is required, but it is limited to a just a few pins, basic through-hole soldering, and couple (if any) polarized components. A basic soldering iron is all you should need.
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If a board needs code or communicates somehow, you're going to need to know how to program or interface with it. The programming skill is all about communication and code.
Skill Level: Competent - The toolchain for programming is a bit more complex and will examples may not be explicitly provided for you. You will be required to have a fundamental knowledge of programming and be required to provide your own code. You may need to modify existing libraries or code to work with your specific hardware. Sensor and hardware interfaces will be SPI or I2C.
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If it requires power, you need to know how much, what all the pins do, and how to hook it up. You may need to reference datasheets, schematics, and know the ins and outs of electronics.
Skill Level: Rookie - You may be required to know a bit more about the component, such as orientation, or how to hook it up, in addition to power requirements. You will need to understand polarized components.
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Based on 3 ratings:
Being able to get this chip on a breakout board has been extremely helpful for my prototyping effort. The example code was helpful, but I made my own set of functions since I’m using a PIC and I2C commands are different. I did also find the PIC I2C to HMC interface requires about 5K of pull-up to provide clean waveforms, as with 10K pull-ups they were heavily rounded off (although still worked). So I just put another set of 10K’s in parallel with the ones on the breakout board and it cleaned right up. It’s probably a PIC thing. Overall, I’m very pleased with the breakout board. The chip functionality is nice, also, and certainly offloads some of the processing software I would otherwise need on the micro if I went with one of the less expensive heading ICs (for my application).
Hooked it up and got nothing. I can read the EEPROMS for I2C address, OP Mode 1 & 2, etc. so I know the I2C is working. But when I request a reading using 0x50 I get nada. It says I’m in run mode. I noticed there are two different data sheets for the HMC6343. One is dated 2014 and the other is dated 2008. The difference between the two is that there are two grounds on one (2008) and one ground on the other(2014) as well as one having a cs and cs ctrl connection (2008) and the other one not having this connection (2014). This breakout board is based on the 2008 data sheet and I can’t help but wonder if it should be based on the 2014 data sheet. In any event, the breakout board doesn’t work and I’m out $150. I would caution anyone who is contemplating purchasing this breakout board.
Hmmm, this sounds like a job for our tech support team. I would recommend getting in touch with them, they should be able tohelp resolve this situation for you.