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LMX would cost like 10x more (well, on Digikey) and it appears they're all BGA, which presents a prototyping problem.
There's the Microchip MRF24J40MA-I/RM for IEEE 802.15.4 stuff though, and it's got an excellent 400m LOS range, like $10 for a complete module on Mouser.
Actually I've been working on this.
The BCM2045 chip has multiple interfaces, including USB, SPI, and UART. My first guess is that any of these interfaces is equally capable of carrying the Rx and Tx traffic.
The dongels are remarkably cheap and contain your primary oscillator, 5v-to-3.3v...
Microcontrollers generally would not have a good way to implement the memory management used in C++. Most have limited ROM and much more limited RAM.
Actually, most of the features from C++ that would be practical to implement on a microcontroller can be done with C. Structs, when combined...
pic18 mclr reset circuit
Those circuits seem mainly for solving special situations, and stand a good chance of making things worse.
I have always just run a 10k resistor from MCLR to Vdd and I've never had a problem... at least not one I'm aware of being related to the MCLR circuit, it would...
Re: how to interface to adc
You can also get an instrumentation amplifier, which can do a fully differential input by itself. That saves you from having to mount external resistors and deal with the offset errors from resistor tolerances.
Re: how to write a good ISR
Yes- your system could either have software bugs, corrupted RAM space, or the main could be stuck in an infinite loop waiting for an external component to respond, and that timer would likely still run though the state is now busted. Since your main code probably...
If the heater is AC, you should not use PWM due to the noise it creates. You can use an SCR, probably optically isolated, or a solid state relay. The SCR has an additional benefit of proportional control rather than on/off, but it doesn't sound like you need that.
For the heater, you will...
Re: h@ck PIC 18FXXX
https://www.htsoft.com has a PIC18 demo C compiler that works for 30 days after you install, and is fully functional except for some relatively minor, exotic features.
I looked at CCS and was rather disgusted, frankly. You aren't supposed to access the regs directly but...
eagle cadsoft+illustrater
I would like to do a board with a number of wired components- PIC and an LCD, power supply, xtal, negative bias generator, etc wired in, but the rest left as prototyping space, composed of the power rails and a lot of unconnected plated throughholes.
What's the best...
eagle connect between sheets
I had a problem in 4.11 where I selected an area, Cut with the scissors, and Pasted elsewhere. I needed to take a couple of small routed boards and copy to a single board since the mfg I talked to did not provide this service freely, so I needed to open a new board...
I created Gerber files as per the instructions at:
https://www.hobby-elec.org/e_eagle44.htm
I opened them up in Viewmate. I am unfamiliar with this tool and manually used "Import" on each file to display the layers on top of each other.
The bottom layers are flipped horizontally. Is this...
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